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Radio-TV-Experimenter-1965-10-11

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CAN BRAIN WADES RUN SPACE SHIPS?RA DIO-TvEXPERIMENTEROCTOBER - NOVEMBER 75cAMf1M STATIONSWORLD-WIDESIi3RT -WAVE LISTINGSaINSIDE VLF *:4:14:<strong>11</strong>1,ill Ift` IN ANTARCTICA!HOW TO WIRE AUTO GAUGES!D %in9 AT 30 mc PLUS!e in Soviet space shots,,. d services, etc.!oastraqnkvts.tigolajenteVane,,1l.a«1 ,.Solid -State RecEiverSonotoneSonomaster RM-1KSpeaker System KitAmphenod Model 524CB Selective Cal UnitComplete Plans for:1<strong>10</strong> -volt Auto Inverter -$12Midget Desk Speaker -$1.50Photo -Slave For Flashgun -$7


Anyone Can Build These High QualityPrecision SAM KitsAt a Substantial SavingsPrecision DecadeResistance BoxDesigned so the electronic experimentercan get any valueof resistance at 1% accuracy.Made of precision components,this decade box offerssuch advantages as fast fingertip switching from any resistancevalue from 1 ohm to1,<strong>11</strong>1,1<strong>10</strong> ohms within seconds.Add or subtract aslittle as 1 ohm with 1% ac-curacy. And ordinary handtools are all that's needed toassemble it in less than 2hours.All PurposeShop TachometerThis tachometer is guaranteedto outperform any $50tach available today or yourmoney will be refunded. Thistach belongs in the tool chestof every machinist, electrician,model maker, motorserviceman and inventor. Asix position rotary switchenables you to select threespeed ranges in either forwardor reverse rotation.Three ranges -0 -500, 5000and 15,000 -cover the gamutof rpms in the home workshopor laboratory on machinetools, such as lathecutting speeds, motor rpm,drilling speeds and other motordriven tools where rpm isan important factor.Pocket -SizeHearing AidNew hearing aid design providesa minimum of 42 decibelsof gain and is adequatefor 75% of all cases of partialdeafness. The aid weighsonly three ounces and issmaller than a king -size cigarettepack. Uses latest electromagneticearphone andminiature crystal microphone.Powered by a <strong>10</strong>c penlight flashlight battery andhas a switch for turningpower off when not in useand a control that lets youadjust the volume to a comfortablesound level.SCIENCE & MECHANICS, KIT DIVISION505 Park Avenue, New York, N. Y. <strong>10</strong>022X<strong>TV</strong><strong>10</strong>65 ,OOPlease send the S &M kits that have complete asssembly plans, or the assembled and fully tested electronic aidschecked below. I understand that if I am not completely satisfied I may return the kits within <strong>10</strong> days for a completerefund of the purchase price.NAMFHearing AidTachometerDecade Box$24.95 Kit$16.95 Kit$24.95 Kit$34.95 Assembled$21.95 Assembled$29.95 AssembledAdd <strong>10</strong>% for Canadian and Foreign orders. New York City residents add 4% for N.Y.C. sales tax.(Please Print)ADDRESSZIPCITY STATE CODE_Check or money order enclosed, ship post paid.Enclosed $3.00 deposit, ship balance C.O.D., pluspostage and C.O.D. charges.


------- IM---- -- --I1. "How to Succeed " - contains self- evaluationMail this couponIfor freecharts, a le plan" for success, tells why Success Kit,Some people fa I.2. Career Catalcg- outlines career opportunitiesif someone hasremoved the3. Free Sample Lesson -"Selling Your Ideas,"illustrates the I.C.S. method of instruction.postcardIn field you select, contains complete courselisting and descriptions.x tsaaaW// V\IU75th YEARINTERNATIONAL CORRESPONDENCE SCHOOLSIIIDept. <strong>11</strong>19. Scranlos. Penna. 18515 in Cowan. P.O. Boa 418.Honolulu In Canada: I. C. S. Canadian. Ltd.. Montreal)Without cost or obiloltion. pica rush me my FREE Success Kit.HomoAgeHorns *caressCityField d InterestZoneStateFOcoupatlonEmployef byWorking Hours_SPECIAL LOW RATES TO MEMBERS OF U. S. ARMED FORCESIIf you will invest some of your spare time in home study, this postcard(or coupon) can start you on the most profitable venture of yourlife! By return mail -FREE and with no obligation -you will receive theI.C.S. SUCCESS KIT. These three valuable booklets have started thousandsupon thousands of determined men and women on the road to payboosts, promotions, new careers, job security.Choose from 236 courses! All are practical, job -related. Complete,personalized service from the oldest and largest school of its kind inthe world. Diplomas to waduates. Send card (or coupon) today!ACCREDITED MEMBER, NATIONAL HOME STUDY COUNCILRADIO -<strong>TV</strong> EXPERIMENTER is published bimonthly at $4.00 per year, by Science & Mechanics Publishlng Co., 505 Park Avenue,New Yo-k. N.Y. <strong>10</strong>022. Second class postage paid at New York. N.Y. and at additional mailing office. Copyright <strong>1965</strong> byScience and Mechanics Publishing Co.


RADIO-<strong>TV</strong>EXPERIMENTEROctober -November <strong>1965</strong>CONTENTS /INDEX:Cover Highlightsd3;>,,..1= é _Cover Photoby Don lothropm1á14r13=.4ár`oj*Dipole at the South Pole 45 J J J J J JWorkbench Weegee Board 50 J J JElectronics in the Oxygen Tank 52 J J J J*SCR Slave Photoflash 54 J J*Matrix Circuits 57 J J J J*Back to Auto Gauges 61 J J J*Human Thought in OrbitThe DXpedition*Lab Check -EICO 3566 Receiver 7566 J J69 JJ J*Lab Check -Sonotone RM-1K 71 J J J*1<strong>10</strong> -V Power for Your Car 79 J J JMahlon Loomis /Discoverer of <strong>Radio</strong> 83 J J J J*Canned Sound 86 J J J JPropagation Forecast 88 J J J*DX from Upper Limbo 89 J J J J*Lab Check -Amphenol 524 91 J J JTake a Tape Break 93 J J J JPush -Pull Crystal Receiver 95 J if JBFO /Beat Frequency Oscillator 98 J J JDF for CB <strong>10</strong>0 J J JPrecision RF -IF Oscillator <strong>10</strong>1 J J J JWHITE'S RADIO LOG, Vol. 44, No. 2 -Page <strong>10</strong>7DEPARTMENTS Editorial 13 CB Column 18 Bookmark 26New Products 30 Ask Me Another 34 Literature Library 128JJJJJJNOW THERE AREOVER 65 RADIO SHACKSCOAST -TO -COASTCALIFORNIABAKERSFIELD - 1308 19th St., 322444SLos ANGELES West LA.) - Pico Blvd. at Overland.837x141LOS ANGELES (Anaheim)- 501 W. Katella Are..7169540LOS ANGELES IOewneyl- Stenewad SAa. Glr,9231<strong>10</strong>9LOS ANGELES (Mission Hills) -<strong>10</strong>919 Sepuln öa Blvd..3653<strong>11</strong>8LOS ANGELES (Santa Anal - Bristol Plaza Shop. Cl, .1212 South Bristol. 5465<strong>10</strong>0SAN DIEGO (La Mesa) - Gressment Shop. Ctr.. 465 -4062LONG PEACH - 3916 Atlantic Ave.. 4267514OAKLAND (San Leandro) - Bay Fair Shop Cl,. . 2765200SACRAMENTO -600 Fulton Ave., 4832<strong>10</strong>7COLORADODENVER - 798 South Santa Fe Sr., 1331833CONNECTICUTHAMDEN - Hamden Mart Shop. Cl,., 28979<strong>11</strong>MANCHESTER - Manchester Shopping Parkade. 6495241NEW HAVEN - 92 York St.. 787-7121NEW LONDON - New London Shop. Ctr.. 4424522STAMFORD - 29 High Ride Rd, 32543<strong>11</strong>WEST HARTFORD - 39 So. Main St. 236-5441ILLINOISCHICAGO - Evergreen Plaza at 951h St., 6369796MAINEPORTIONS - Pine Tree Shop. Ctr., 173.7071MASSACHUSETTSBOSTON - 167 Washington St. 523 4<strong>11</strong>9BOSTON - 594 Washington St., 4263431BOSTON- 1<strong>10</strong> Federal St.. 4263997BRAINTREE - South Shore Plaza. 8439200BROOKLINE - 730 Commonwealth Ave., 734.<strong>10</strong>00CAMBRIDGE - Fresh Pend Shop Ctr., 491 -2915FRAMINGHAM - Shoppers' World, 8736569LOWELL Central Shop Plaza, 455-5469SAUGUS - N. E. Shop. Ctr.. 233-5350SPRINGFIELD - <strong>11</strong>62 Main St., 7342189WEST SPRINGFIELD - Century Shop. Ctr., 732 4433WORCESTER - Lincoln Plata, 7519030STMINNESOTAPAUL .- 473 North SnellingNEW HAMPSHIREMANCHESTER - 1241 Elm St., 669 1303NEW MEXICOALBUQUERQUE - 6315 Lomas. N.E. 268 5<strong>11</strong>2NEW YORKBINGHAMTON (Vestal) - Vestal Shopping PlazaBUFFALO (Clarence)- Tansitown Shop Ctr_ 6317<strong>11</strong>1NEW YORK - <strong>11</strong>28 Ave. of the Americas. 68744823559740SCHENECTADY (Rotterdam) - Shoporama Shop. Ctr.,SYRACUSE - 3051 Erie Blvd East. 4464990OHIOCINCINNATI - 852 SwiNon Ctr., 6314570OKLAHOMAOKLAHOMA CITY - Mayfair Shop. CI, 943 8491TULSA - 2730 South Harvard, 142-2255OREGONPORTLAND - 1928 N E. 42nd St., 2814841PENNSYLVANIAPHILADELPHIA - 23216 Cottman Ave.. Roosevelt Mall33847<strong>11</strong>PHILADELPHIA - <strong>11</strong>29 Walnut St.. 9232198RHODE ISLANDCRANSTON - 1301 Reservoir Ave, 942.6600EAST PROVIDENCE - Shoppers' Town, 434 5671TEXASABILENE -29<strong>10</strong> North First St., 6734169ARLINGTON - Collins at Park Row, 2173151DALLAS - 1601 Main St., 1416219DALLAS - Medallion Center. 363.6236DALLAS - 125 Wynnewood Village. 948.3201FORT WORTH 1515 So. Univ. Or., 3354705FORT WORTH 900 East Berry St., 9217828FORT WORTH - 3524 East Denton Highway, 831.1951HOUSTON 9458 Gull Freeway. 6434131HOUSTON 2315 Travis St. 523.0871HOUSTON - 322 Nerthline Mall, 6977914HOUSTON (Bellaire) - 4159 Bissenntl, 6675190SAN ANTONIO - 150 Wonderland Shop. Ctr., 735 9161SHERMAN - 1620 Highway 75 North, 8924553WACO - <strong>10</strong>16 Austen Ave., 1527139VIRGINIAARLINGTON - Washington-Loe Shop. Ctr., 5245412WASHINGTONSEATTLE - 2028 Third Ave.. 6925280SEATTLE - 837 N. E. 1<strong>10</strong>th St., 3644670R6RADIO -<strong>TV</strong> EXPERIMENTER


THE ONE CATALOGTHAT REALLYSAVES YOU MONEY !Page After Page ofExclusive Bargains!<strong>Radio</strong> Shack's free 43rd Anniversary Issue, just off the press and(ceded with values like these:`INTRaCOM'CB Transceiver/IntercomYI1 16- Transistor TRC -12 I1 Mobile CB <strong>Radio</strong> <strong>11</strong>BECAUSE only <strong>Radio</strong> Shack has over65 Mail Order Centers coast -to- coast.BECAUSE you save postage by order-ing from the nearest <strong>Radio</strong> Shack.BECAUSE you save time, get fasterdelivery, by shopping your nearest<strong>Radio</strong> Shack by mail.BECAUSE <strong>Radio</strong> Shack has one lowprice -East, Central, South, West.BECAUSE <strong>Radio</strong> Shack is the world'slargest chain of electronic stores. Webuy better ... give you exclusiveSpecial Purchases month after month!12- Channel9- TransistorWalkie-TalkieA}<strong>11</strong>TRC -22 sends, receives up to 2New solid -state crystal- controlled Featuring 6 crystal -controlled re- miles on TWO CB channels: 5transceiver / intercom. Wireless 2- 1 ceive and transmit channels; ad- 1 & II! No- license <strong>10</strong>0 mw operwayradio! <strong>10</strong>0 mw output. No justable squelch; no tubes; in- ation. Provision for AC operalicense!Has built -in mike, 1 stant operation! Only 2x6x71/2": 1 tion, too. Ceramic filter modulespeaker, antenna. Desk -top styl- fits under the dash of any 12V. cuts adjacent channel interfering.Uses <strong>11</strong>7 VAC. #21-903.1car, truck, tractor or boat. #2I- ence. Batteries, case included.Only $34.95.1 909. Only $<strong>11</strong>9.95.21.904. Only $39.95.1,<strong>11</strong>1.. .<strong>11</strong>.MOM<strong>Radio</strong> Shack Mailing List DepartmentR<strong>TV</strong> 9652727 West 7th Street, Fort Worth, Texas.I Please Mail My Free 1966 <strong>Radio</strong> Shack Catalog to-Name (Please Print)StreetCity State Zipi ® EMI iOCTOBER -NOVEMBER, <strong>1965</strong>7


TERRIFICI:It/lVF VALUES!M.'DLAND CB Transceiver with Push -to -TalkMike. Tuneable (Model 13- 160A). Reg.$<strong>10</strong>9.95 SALE $89.95MIDLAND WALKIE- TALKIE with AM <strong>Radio</strong>.<strong>11</strong> Transistors (Model 13 -<strong>11</strong>1). Reg.$39.95 SALE $33.95MIDLAND WALKIE- TALKIE with full Accessories.<strong>10</strong> Transistors (Model 13 -1<strong>10</strong>).Reg. $33.95 (2 Channel) SALE $29.95HALLMARK CB Transceiver (Model <strong>10</strong>50).For 1<strong>10</strong> V. 8 12 V. Base or Mobile. Reg.$169.50 SALE $99.95Terrifie Sale Prices on Ili -limn171 'Topper' .tnlennan:Model TLWR Roof Mount Omni -Topper.Reg. $<strong>11</strong>.97 SALE $ 9.88Model TTMP AM -CE Duo -Topper. Reg.$14.95 SALE $12.19Model TLWT Telescoping Topper Whip.Reg. $7.00 SALE $ 5.88Model TLWM 50" Topper 8 Chrome BodyMount. Reg. $8.95 SALE $ 7.20Model TRC Roof top Omni -Topper Reg.$14.95 SALE $12.15Model TMC All- purpose Topper 8 BodyMount. Reg. $12.95 SALE $<strong>10</strong>.50Model TLW 50" Top -loaded Whip Reg.$6.90 SALE $ 5.40MODEL CB -3 3 Element Beam Antenna.Reg. $19.95 SALE $17.95Close-Doi Special ::TRANSISTORIZED INTERCOM -Two station,inc. 66 ft. cable, plugs, etc., 8 full instructions.Reg. $<strong>10</strong>.95 SALE $ 7.77ROSS <strong>11</strong> TRANSISTOR WALKIE- TALKIE,complete with carrying case, earphone,batteries. Reg. $39.95 SALE $29.95ROSS INTERCOM ADAPTER converts RossWalkie Talkie to intercom or base station(1<strong>10</strong> V.). Reg. $<strong>10</strong>.95 SALE $ 9.95COMMAND CRYSTALS for Citizens Band..002% tol. Specify Make- Model -ChannelEACH $ 1.7912 or more -assorted channels EACH $ 1.69KIT of 5 Assorted 1<strong>10</strong> V. Timing Motors($25.00 val.) KITKIT of 6 Assorted Relays ($20.00 val.) KITKIT of 6 Assorted Can Condensers (Lytics,etc. NEW)KIT1.99$ 3.19$ 1.99KIT of <strong>10</strong> Assorted Rotary Switches ($<strong>10</strong>.00val.)KIT $ 1.19KIT of <strong>10</strong> Assorted Volume Controls ($<strong>10</strong>.00val.)KIT $ .99KIT of 5 Assorted Ferrite Loopsticks ($<strong>10</strong>.00val.)KIT $ .99GROVE BARGAIN FLYER mailed FREECheck items wanted, return ad or order with check ormoney order, include additional amount for postageand insurance, excess refunded. 50C service chargeon orders under $<strong>10</strong>.00, minimum order $5.00. NoC.O.D.'s.GROVE ELECTRONIC SUPPLY COMPANY4<strong>10</strong>9 W. Belmont Ave. Telephone:Chicago, III. 60641 (Area 312) 382 -6160OCTOBER <strong>1965</strong> -NOVEMBER <strong>1965</strong>VOLUME 19 No. 2RADIO -<strong>TV</strong>EXPERIMENTERJULIAN M. SIENKIEWICZWA2CQL'KMD4313WILLIAM HARTFORDKKD7432ANTHONY MACCARRONEJOSEPH DAVISRON STAFFIERIALBERT DE QUERQUISLYNDA P. KALMANELLIOT S.KRANEJIM CAPPELLOLEONARD F.CARL BARTEEPINTOHELEN GOODSTEINRI- CHARD L. HOWEJOSEPH DAFFRONEditorTechnical EditorArt DirectorAssistant Art DirectorArt EditorArt AssociateArt AssociateAdvertising DirectorAdvertising ManagerProduction DirectorProduction ManagerAssistant Production ManagerPromotion DirectorErecattee EditorPersid.nl and PublisherB. G. DAVISErrrntirc l'ire President and Assistant PublisherJOEL DAVISl'ire President and Editorial DirectorHERB LEAVY, KMD4529RADIO -<strong>TV</strong> EXPERIMENTER, Vol. 19, No.2 07561, is published bimonthlyby SCIENCE & MECHANICS PUBLISHING CO., a subsidiary of DavisPublications, Inc. Editorial, business and subscription offices: 505 ParkAve., New York, N. Y. <strong>10</strong>022. One -year subscription Isis issuesl -$4.00; two -year subscription <strong>11</strong>2 issuesl -$7.00; and three -year subscription<strong>11</strong>8 issues' -$<strong>10</strong>.00. Add $1.00 per year for postage outsidethe U.S.A. and Canada. Advertising offices: New York, 505 Park Ave.,P1 -2 -6200; Chicago: 520 N. Michigan Ave., 527 -0330; los Angeles:6253 Hollywood Blvd., 213.463 -5143; Atlanta: Pirnie & Brown, 3<strong>10</strong>8Piedmont Rd., N.E., 404 - 233 -6729; Long Island: ten Osten, 9 GordenStreet, Great Neck, N.Y., 516. 487.3305; Southwestern advertisingrepresentative: Jim Wright, 4 N. Eight St., St. louis, CH I -<strong>1965</strong>.EDITORIAL CONTRIBUTIONS must be accompanied by return postageand will be handled with reasonable care; however, publisher assumesno responsibility for return or safety of manuscripts, art work, orphotographs. All contributions should be addressed to the Editor,<strong>Radio</strong> -<strong>TV</strong> <strong>Experimenter</strong>, 505 Pork Avenue, New York, New York <strong>10</strong>022.Second class postage paid at New York, New York and at additionalmailing office. Copyright <strong>1965</strong> by Science and Mechanics Publishing Co.fAle8RADIO -<strong>TV</strong> EXPERIMENTER


?ea cum' Rifreibt.ALL ELECTRICALAPPLIANCESand MOTORSELECTRICALCIRCUITSin AUTOMOBILESALL <strong>TV</strong> TUBES(INCLUDINGPICTURE TUBES)WITHUTILITYNEW MODEL 161TESTER' AEG U 5 Gai OErICI"Utility Tester" is a trade -mark registered in the United States Patent Office to identify the design and productionof a multi -range and nulti- service instrument providing all the services required for the repair of Electrical Appliances,Motors, Automotive Equipment and <strong>TV</strong> tubes.THE MOST VERSATILE ALL- AROUND TROUBLE SHOOTER EVER PRODUCED!.-pAS AN ELECTRICALTROUBLE SHOOTERTHE MODEL 161:Will test Toasters. Irons, Broilers. Heating Pads. Clocks. Fans, Vacuum Cleaners,Refrigerators. lamps including Fluorescents.Fuses. Switches. Thermostats. etc.Will test ALL MOTORS -- single phase.multi-phase. univertal, squirrel cage. induction. in fact every type of motor fromfractional H.P. to : H P.Will measure the actual voltage. A.0 orD.C.. 1<strong>10</strong> Volt or 2T0 Volt linesWill measure the actual current conssumption of any appliance or utilityeither A.C. or D.C. and will measure itwhile the unit is it operation. The reading will be direct ii amperes The applianceor utility mad be plugged directlyinto the Iront panel receptacle.Incorporates a seisitive direct -readingresistance range. which will accura'etymeasure all resistances commonly usedin electrical appliances, motors, etc Thisrange also will enable continuity checksand tests for shors and opens.Will instantly locate opens, shorts andgrounds.AS A TELEVISIONTUBE TESTER:The majority of inoperative tubes stopfun :tioning due to open and burnedout filaments. Please note. the Model161 will not test the qua ity of a tube(an emission tester is required forthat purpose), but the Model 161 willtest ALL the tubes used in your <strong>TV</strong>set for open filaments. burned outtubes. etc. A safe guart resistor includedin the circuit network of theModel 161 limits the output to approximatelyone one- thotsandth of anampere. This insures pcsitive safetyfor the non -technical user and alsoeliminates the possibility of ever burningout a tube under test. The Model161 is capable of testirg every typeof tube used in any and ALL <strong>TV</strong> sets(including picture tubes).The Mode 161 comes housed in a handsome portable case. Complete with all test leadsand a profusely illustrated book written in plain, easy- to- understaId language. ONLYAS AN AUTOMOTIVETESTER THE MODEL161 WILL TEST:BOTH 6 VOLT AND 12 VOLT STORAGEBATTERIES GENERATORS STARTERSDISTRIBUTORSIGNITION COILSREGULATORS RELAYS CIRCUITBREAKERSCIGARETTE LIGHTERSSTOP LIGHTS CONDENSERS DIREC-TIONAL SIGNAL SYSTEMSALL LAMPSAND BULBS FUSES HEATING SYS-TEMS HORNS Also will locate poorgrounds, breaks in wiring, poor con.nections, etc.- NO MONEY WITH ORDER NO C.O.D. SEE PAGE 12.ACCURATE INSTRUMENT CO., INC. 9<strong>11</strong> FAILE STREET BRONX, N. Y. <strong>10</strong>474


THE MOST VERSATILE ALL- AROUNDTESTING <strong>TV</strong> TUBES (Including Picture Tubes)FOR BURNED OUT AND OPEN FILAMENTSIt has been estimated that more than 80% of <strong>TV</strong> breakdownsare due to defective tubes. Since the symptom provides a perfectclue as to which tube or tubes are responsible for thefault, the Model 161 Utility Tester provides 12 illustratedsymptoms. The Model 161 manual lists the particular tube ortubes which are probably responsible for the defective operation.The Model 161 will test all tubes for open or burned outfilaments.First, locate the suspect tubes, by referring to the particularillustration. You will then learn the specific tube or tubes whichneed to be checked. Then, simply insert the tube in the appropriatesocket of Model 161. If a picture tube, use the accessorypicture tube socket.CHECKING AUTOMOTIVE CIRCUITS and PARTSModel 161 enables youto test all automotivebatteries including 6volt and 12 volt hatteries under load.Readings are providedon a special greenauto battery voltagecalibration.Testing heating systerns. The causes oftrouble vary but Model161 will check out all.Detailed instructionsare included in theModel 161 manual.Model 161 UtilityTester tests all circuitbreakers includingthe magnetic type.Ever experience anythingmore embarrassingand frustratingthan trouble with theauto horn' Model 161will cneck out thecomplete horn systemincluding relays. buttons, etcThe complete flashdirectional system ofany automobile caneasily be tested withModel 161. The resistanceand voltageranges are employedfor such tests.Proper test of regulatorsrequires mealurement of voltage.resistance and currentdrain. The Model 161is one of the very fewtesters ever producedwhich provides allthose services.To test generatorsuse the voltage rangeof Model 161 andwhen necessary theresistance range. Mod.el 161 will test gemerators with externalfield coil terminals.plus many more automotive partsNO MONEY WITH ORDER NO C.O.D. - SEE PAGE 12ACCURATE INSTRUMENT CO.. INC. 9<strong>11</strong> FAILE STREET BRONX, N. Y. <strong>10</strong>474Model 161 testsboth single and twopost ignition coils.<strong>10</strong>RADIO -<strong>TV</strong> EXPERIMENTER


._:-' ¡TROUBLE SHOOTER EVER PRODUCED!CHECKING ELECTRICAL APPLIANCES, MOTORS, SWITCHES, etc.si i1.:0r')4-®® ®®m:_@.:s -®s,'.74---..,1, I -'--4°:. i'-tl : - ._ 'Urlñrg`'.QLam; ® ®!-1eee--Q ,mr'e:1=F- ff i- °/How to determinewhich side powercircuit is grounded!Simply connect oneModel 161 lead to BXO it" and the other lead toone of the two slotsIn the outlet. The side.which is grounded willcause the meter toread.Avoid time concerningand embarrassingrepair of applianceswhen the switch Issuspect. Model 161will indicate it theswitch is okay: open:or has a faulty intermitten(contact.With the 161you can measure first./ Modelthe actual current consumptionIn ampereswhile the is in. operation and then theresistance in ohms 01the heating element.`To check toasters,simply connect theModel 161 test leads<strong>10</strong> the toaster plug.A resistance test inohms is the fastestway to test that partitular appliance-v -._.B414 ..1-re!.- - M- -_ -'ú:®rp'. 0e ,.--.©0'i?'1:; 'óF' ó`kt a ! ®,'®I ! Ló'ß;i . °oaPit`(Electric clocks tomsome so very littlecurrent it is imprackcal to test them withline meters. The Mod -el 161 will check suchclocks accurately bysimple connection tothe electric cord.Electric fans and-%j A otóer small molardriven devices may hechecked instantly andaccurately with Model161 -mB,eA vacuum cleanercan be tested best byresistance measurementfirst, and then.I consumption and ap-'- plied voltage. All" ° three measurements>_ - including leakage3when necessary aresupplied by Model161.+J'. ÿ405,i,`O. Otek+®.. --ße,t{ Olo':to.jit__.The manual suppliedwith Model 161 willgive you detailed directions for testingrefrigerators.'1iI_1Two -heat DrollerID* . testing is a inchwith the Model 161.Thectsshoandtadwohms.vii._.j`i- -r'Model 161 will eak^ _er net i®T', k+ -, gf ,o9M.,_.1722..'e,,,-. .. ../ heating/'-- you how to test aa pad p in lessDetailed instructiens provided withthe Model 161 showthan a minute ccuthe Model 161. Accarate checks will bemade on all three"speeds."k,:_ate The thermostat Is a- _ -very frequent cause of6®4(i`e'trouble in furnace eon-.::F',,' _l-t.o ^ 4'4jL ow. w.CKsvool systems. and ryusual secondaryusual with ccu unitscan be accuratelymeasured with Model161.plus many more tests on parts listed in the Model 161 Utility Tester BookNO MONEY WITH ORDER NO C.O.D. - SEE PAGE 12ACCURATE INSTRUMENT CO., INC. 9<strong>11</strong> FAILE STREET BRONX, N. Y. <strong>10</strong>474OCTOBER -NOVI MBER, <strong>1965</strong><strong>11</strong>


THE MODEL 161 is the latest of a long line of UTILITY TESTERS produced and improvedsince 1935. Although made primarily for the non -professional experimenter and homeowner,the Model 161 because of its compact size and multiplicity of services is the ideal unit forElectricians, Industrial Maintenance Men, Auto Repairmen and <strong>Radio</strong> Servicemen.CHECKTHESE RANGES6 VOLTAGE RANGES0-15 volts on A.C.0.150 volts on A.C.0 -300 volts on A.C.0 -15 volts on D.C.0 -150 volts on D.C.0.300 volts on D.C.2 CURRENT RANGES0 -15 amperes on A.C.0.15 amperes on D.C.RESISTANCE RANGE0-1,000 ohmsUNIQUEFEATURE!The Model 161 will measure thecurrent consumption of a circuitor appliance without breakingany wires and while the unit isin operation.Simply insert plug of applianceinto special socket on frontpanel of Model 161, plug linecord of Model 161 into outlet,and read the current consumptionin amperes direct on themeter.EXAMINE BEFORE YOU BUY! - SEEPLUS<strong>TV</strong> TUBE TESTINGTests ALL <strong>TV</strong> tubes including loctal, 7 pin,octal, 9 pin, and picture tubes for openor burned out filaments. Separate socketsare provided for each type so that you cannotinsert a tube in the wrong socket.Alignment pin straighteners are includedto prevent damage to pins which are frequentlybent when tubes are removed froma <strong>TV</strong> chassis.PLUSAUTO BATTERYCALIBRATIONS:2 volts (single cell)6 volts (old battery)12 volts (new batteries)PRECEDING THREE PAGES!READ THIS IMPORTANT MESSAGE NOW!!You don't pay for the Model 161 until AFTER youhave examined it in the privacy of your home!SEND NO MONEY WITH ORDERPAY POSTMAN NOTHING ON DELIVERY!Yes, when you send in the coupon below, youare merely giving us permission to submit theModel 161 for your approval. If, after tryingit you decide to keep it, then and only thendo you send us $5.00 and pay the balance atthe rate of $5.00 per month until the totalprice of $22.50 (plus small p.p. and budgetcharge) is paid. If not completely satisfied(we can't please everyone) you simply returnthe unit to us; no explanation necessary.ACCURATE INSTRUMENT CO.,Dept. D -418, 9<strong>11</strong> Faile St.,Bronx, N. Y. <strong>10</strong>474INC.NameLPlease rush me one Model 161. Ifsatisfactory I agree to pay $5.00within <strong>10</strong> days and balance at rateof $5 per month until total priceof $22.50 (plus small P.P. and budgetcharge) is paid. If not satisfactory,I may return for cancellationof account.AddressCityStatelip12 RADIO -<strong>TV</strong> EXPERIMENTER


<strong>11</strong>7-AEFEEDBACKJulian M. Sienkiewicz, EditorWA2CQL /KM<strong>11</strong>)431:3FVERYONE has heard about the FCCrules changes earlier this year affecting Part95, the Citizens Band, but how many have actuallyread them. Except for a few ship'slawyers and the like, CB'ers have been lis-tening to hearsay. So, to clear the air, hereare some of the most significant provisionsof the amended rules:Section 95.41(d) is amended to permit communicationbetween units of different stations(interstation) only on Channels 9 -14and 23; 27.065, 27.075. 27.085, 27.<strong>10</strong>5,27.125 and 27.255 mc., respectively. Communicationsbetween units of the same sta-tion (intrastation) continue to be permittedon any of the 23 channels.Section 95.83(a) contains a list of prohibiteduses for citizens radio stations. The followingis a partial List:(a) For engaging in radio communications asa hobby or diversion, i.e., operating theradio station as an activity in and of itself.(b) For the transmission of communicationscontaining obscene, indecent, or profanewords, language, or meaning.(c) To communicate with stations authorizedor operated under the provisions of otherparts of the Commission's rules, with unlicensedstations, or with United StatesGovernment or foreign stations, exceptfor communications pursuant to 95.85(d)(b) and 95.121(emergency and civildefense communications).For any communication not directed tospecific stations or persons, except for:(I) emergency and civil defense communicationsas provided in 95.85(b) and95.93. and (I<strong>11</strong>) communications froma mobile unit to other units or stationsfor the sole purpose of requesting routingdirections, assistance to disabled vehiclesor vessels, information concerning theTELEXFOR QUALITYThe quality of Telex headsets has become well known to hams over the lasttwenty -five years. Here are three Telex headsets that deliver thekind of top grade performance that hams expect from Telex-MAGNA -TWINFor absolute maximum intelligibilityunder difficult QRM conditions... Super- comfort foamcushions ... Rugged, moisture -proof magnetic drivers givebroad response, excellent sensitivity... Sturdy constructionof high impact plastic.TELESETLightweight, economy versionof the famous MagnaTwin .. .High performance, shock -proofMagna-Twin drivers...Designedespecially for ham requirements.MONOSETFeather -light at 1.20z.... Eliminatesheadset fatigue...Soundfrom replaceable driver is feddirectly into your ears throughadjustable tone arms . .. Telexquality construction assures reliability.Write for descriptive literature today.Dept. 9JTELEX /Acoustic ProductsCOMMUNICATIONS ACCESSORIES3054 Excelsior Blvd.Minneapol,sl6. Minn.OCTOBER- NOVEMBER, <strong>1965</strong> 13


Thinking of college anda space age career inelectronics ?Send for this booklet onENGINEERING TECHNOLOGYAND ENGINEERINGLearn how you can prepare for a dynamiccareer as an electrical or mechanical engineeringtechnician or engineer in suchexciting, growing fields as avionics, missiles,reliability control, fluid mechanics,data processing, metallurgy, microelectronics,and advanced aerospace research.MSOE offers residence study programsleading to these degrees in engineeringtechnology and engineering:2 years - Associate in Applied Science4 years - Bachelor of ScienceAlso get facts about scholarships and financialaids, job placement and otherstudent services, plus photographs ofMSOE technical laboratories andstudent activities. For your copy,just mail the coupon -no obligation.MSOEMilwaukee School of EngineeringMilwaukee School of EngineeringDept. PTX -<strong>10</strong>65 <strong>10</strong>25 N. Milwaukee StreetMilwaukee, Wisconsin 53201Please send the "Your Career" booklet.I'm interested inIn Electrical fields I7 Mechanical fieldsNameAge14AddressCity State ZIPM5227Positive Feedbackavailability of food or lodging, or anyother assistance necessary to a licensee intransit.(e) To interfere maliciously with the communicationsof another station.(f) To transmit superfluous communications,i.e., any transmissions which arenot necessary to communications which(B)(h)are permissible.For the transmission of music, whistling,sound effects, or any material for amusementor entertainment purposes, or solelyto attract attention.For transmitting communications to stationsof other licensees which relate tothe technical performance, capabilities,or testing of any transmitter or other radioequipment, including transmissionsconcerning the signal strength or frequencystability of a transmitter, exceptas necessary to establish or maintain thespecific communication.(i) For relaying messages or transmittingcommunications for a person other thanthe licensee or members of his immediatefamily, except:(I) communications transmitted pursuantto 95.85(b), 95.87(b) (71, and 95.121;and (ii), upon specific prior Commissionapproval, communications between citizensradio stations at fixed locationswhere public telephone service is not provided.Section 95.83(h) prohibits a Class D stationfrom communicating with any unit over adistance of more than 150 miles.Section 95.87 with limited exceptions prohibitsthe operation of any citizens radiostation by persons other than (a) the licensee,(b) members of the licensee's immediatefamily living in the same household, and(c) employees of the licensee, only whileacting within the scope of their employment.Any person under the control or supervisionof the licensee may operate a Class B orClass C station used solely for the control ofremote objects or devices other than devicesused to attract attention.Section 95.91(b) limits the duration of ClassD station transmissions as follows:Communications between or among ClassD stations shall not exceed 5 consecutiveminutes. At the conclusion of this 5 minuteperiod, or upon termination of the exchangeif less than 5 minutes, the station transmit-RADIO -<strong>TV</strong> EXPERIMENTER


New Lower Prices On Heathkit® CB!Save $20 On Deluxe 5- Channel "Master Station" Transceiver!ovemommil5 crystal -controlled transmit & receivechannels Receives all 23 channelsBuilt -in 4 -tone selective call Tuningmeter Adjustable squelchBuilt -in 3 -way power supply -6 or12 v. DC, <strong>11</strong>7 v. AC PTT mike, powercables & crystals for 1 channel. 23 lbs.Kit GW -42 $9995(was $<strong>11</strong>9.95)Save $15 On Selective Call Transceiver!Kit GW -32A(<strong>11</strong>7 v. AC)$6995(was $84.95)5 crystal -controlled transmit & receivechannels Built -in selective call PTTmike, cable & crystals for 1 channel KitGW -32D (6 or 12 v. DC), $74.95 -15 lbs.Save S5 On1 -Watt Walkie -Talkie!Kit GW -52$6 995(pair $129.95)Operates up to 3 milesRechargeable battery chargesfrom <strong>11</strong>7 v. AC or cars 12 v.battery <strong>10</strong> transistor, 2-diode circuit Case, earphones,crystals. 4 lbs.See Other Lower - PricedSave $12 On 5- Channel Transceiver!Kit GW -22A(<strong>11</strong>7 v. AC)$47951(was $59.95)5 crystal controlled transmit & receivechannels Superhet receiver with RF stagePTT mike, cable & crystals for 1 channelKit GW -22D (6 or 12 v. DC) ... 549.95 -13 lbs.Save S5 On 5- Channel Transceiver!Kit MW -34$8495(was 589.95)All- channel receiver tuning One front -panel transmit crystal socket 5 crystal -controlled transmit & receive channels a-way power supply ... <strong>11</strong>7 v. AC, 6 or 12 v.DC PTT mike, cables, crystals for 1 channel.16 lbs.Heathkit CB In FREE Catalog!LFREE!<strong>1965</strong> HeathkitCatalog ... completedescriptionsof these and over250 easy -to -buildelectronic kits.Mail coupon foryour FREE copy:Heath Company Dept.19 -<strong>10</strong> Benton Harbor, Michigan 49023In Canada: Daystrom, Ltd., Cooksville, OntarioNameAddressEnclosed is SPlease send model(s)plus postage.Please send FREE <strong>1965</strong> Heathkit CatalogCity State ZipPrices & Specifications subject to change without notice.GX -140OCTOBER -NOVEMBER, <strong>1965</strong> 15


1t:DOUBLE BONUS425FREEWORTH OFTransistorslitotesRectifiersKnobsLCent iCoils, etc uInclude 25 fer beetling S,SALEiFREEPOLYPAKOF YOUR á i.CHOICEBOTH FREE WITH EVERY $<strong>10</strong> ORDER4 -2N155 TRANSISTORS, o equals. TOI cues Si2-$00 MC, 2N709 NPN S,Iie,,n planar TO40 $13 2N7<strong>11</strong> 300MW. 300 MC, PNP MESA, TOl .$<strong>11</strong> 40W. 2N164$ TRANS'TR NPN MESA. ....S12 25 -AMP SILICON RECTIFIERS, 14 MIR REFERENCES, 15429, 6 -volt, silicon .$12 "TINY" 2N1613 2W. <strong>10</strong>0MC, T046 cue, npn $12 S00MC TRANS'TRS, 2N964, mesas, pnp, TOle $1<strong>10</strong> "PIN HEAD" TRANSISTORS, if. if. Pop $14 2N43 OUTPUT TRANSISTORS, by GE, pnp, TOS $14 2N333 NPN SILICON transistor., by GE, TOS $12 -6Amp SECT; studs, silicon, 50 to 400V .51<strong>10</strong> MICRO DIODE ZENER Wild &Malby Trsnsitron$14 4 -WATT PLANAR TRANS'TRS, 2N407, 25496 $14 2N35 TRANSISTORS, npn, by Sylvania; TO22 . $16 "MICRO'' TRANSISTORS, 2N131's, 1/16°, rl $1CK721 TRANSISTORS, pop, aluminum rase ,.$1<strong>10</strong> <strong>10</strong>00 MC-1N251 GERMANIUM DIODES SIS 30MC TRANSISTORS, like 25247, Sylvania , . $<strong>11</strong>15 W. TRANSISTOR, silicon npn mess. 25424. .S15 SUN BATTERIES <strong>10</strong> 1 1/2- sires, Ole sensttive5<strong>11</strong>5 PNP SWITCHING TRANSISTORS, asstd. TOS $1<strong>10</strong> NPN SWITCHING TRANSISTORS, 25336, 440 $<strong>11</strong>S PNP TRANSISTORS, CK722,2N35,I07 Si15 NPN TRANSISTORS, 2N35, 170, 440, $130 TRANSISTORS, rf,ll,audio,no test.T05 $14 35 -W. TRANS'TRS, 251434, CBS, TO<strong>10</strong>, stud $l2 2N70$ SILICON 400MC NPN PLANAR, T044 Si<strong>10</strong> POPULAR CK772 TRANSISTORS, pnp, no test $1S 2N<strong>10</strong>7 TRANS'TRS, b, 0E, pnp, pop. audio pak SIPARTS SY THE POUND O TRANSISTORS600.<strong>10</strong>00.e.SONEPOUND<strong>10</strong>0DISCS Pew.,, Audi,RF, u 4O 1Osafor $298'04 2N170 TRANSISTORS by GE., npn for gen'1 rt SI25 TOP HAT RECTIFIER 750 Ms silicon,50.400V $125 GERMANIUM It SILICON DIODES. no test S<strong>11</strong>15W SILICON PWR TRANSIR, npn, Ilk. 251212 SI6 "TEXAS" 750 MA 400V RECTIFIERS, , lead $13 TRANSITRON TRANS'TRS. 25341, 42, 1W, npn 514 200 MC, PNP MESA, TOLE TRANSISTORS SI$25 RELAY SURPRISE, sealed, tiny types S13 INFRA -RED DETECTORS, with leads $1$25 SURPRISE PAK: transistors, rest, diodes, etr $140 PRECISION RESISTORS, í'2.1.2W: 1 ^r value $130 CORNING "LOW NOISE" resistors, asst. $160 TUBULAR CONDENSERS, to .5mí, to 1Kv, asst $140 DISC CONDENSERS, 2 7 rnmf to .05mí to 15V 5160 TUBE SOCKETS, r repiseles, plugs. studio, etc. S130 POWER RESISTORS, 5 to 50W. to 24 Salmis. $1SO MICA CONDENSERS, to .1mí, silvers too! 81<strong>10</strong> VOLUME CONTROLS, to 1 meg, switch too! 51<strong>10</strong>° ELECTROLYTICS, to 500mí, east EP a tubulare$1SO RADIO i <strong>TV</strong> KNOBS, asstd. colors & styles .51<strong>10</strong> TRANSISTOR ELECTROLYTICS: <strong>10</strong>mí to 600mí$1SO COILS 6 CHOKES, it, rf, ant, one, & more 5135 TWO WAITERS, east incl: A.B., 5 "s too! .. $175 HALF WATTERS, asst incl: A.B., 5 c tool 5160 HI -0 RESISTORS,' t, 2W, 1 0 & 5 fr. values $1<strong>10</strong> PHONO PLUG i JACK SETS, tuners, amps $1SOTERMINAL STRIPS,' t., a solder lug types 130 "YELLOW" MYLAR CONDENSERS, asstd val $160 CERAMIC CONDENSERS, tio.ett, two's, to .05 $13- TRANSISTOR SUBMINIATURE AMPLIFIER S14 TRANSISTOR TRANSFORMERS, asst, worth $25 $<strong>11</strong> FILAMENT TRANSFORMER. I 1 I to 6.3vct, :IA $13 GEIGER COUNTER DETECTOR, tubes, assorted $140 WORLD'S SMALLEST CONDENSERS to .OSmt $1Full Leads Factortt Tested Cr Gtdl U.S.A. Mfg.TERMS, send check, money ord.OLYA K SInclude pests Ie -evg, wt. Pe, pak1 lb. bated et 30 day. COD21xP.O. BOX 942XSO. LYNNFIELD, MASS.'PAKINa" KOF Tu. WORLDPositive Feedbackting and the stations participating in the exchangeshall remain silent for a period of atleast 5 minutes and monitor the frequencyor frequencies involved before any furthertransmissions are made. However, for thelimited purpose of acknowledging receipt ofa call, such a station or stations may answera calling station and request that it stand byfor the duration of the silent period. Thetime limitations contained in this paragraphmay not be avoided by changing the operatingfrequency of the station and shall applyto all the transmissions of an operator who,under the other provisions of this part, mayoperate a unit of more than one Citizens <strong>Radio</strong>station.Science FactsHuman "gills" that will let man breatheunder water like a fish, improved heart -lungmachines for open heart surgery and "breathing"systems for submarines and underwaterexperimental stations: these are just a fewpractical applications slated for a new syntheticmembrane recently invented by aGeneral Electric scientist. The membrane canresist passage of water while allowing oxygenintake and dimissal of carbon dioxide.Nuclear energy is now being used by GeneralElectric scientists to make novel changesin the chemical properties of wood. Thewood is impregnated with plastic materialsand then exposed to radiation. The result. .. an extremely hard wood -plastic alloy.Anticipated uses range from table -tops tovinyl floor tiles.A new type of photography which uses nochemical developer and produces an image ina fraction of a second is being studied. Lightand heat alone produce the completely developedpicture. Reheating will erase the pictureand the film can be used again andagain.While rocket launch vehicles continue togrow in size, the radio guidance equipmentis shrinking. This equipment weighed morethan 200 pounds in 1957, compared to a 47pound system in the recent Gemini mannedorbital flight.RADIO -<strong>TV</strong> EXPERIMENTER


Some plain talk from Kodak about tape:Noisemanship...modulation noise...and how to get extra dbs. of silenceAPStarting at the beginningKodak tape is mighty quietwhen it leaves the factory. Becauseof special milling techniquesand our now- famous"R- type" binder, the gamma ferricoxide particles are more uniformin size and shape and moreuniformly dispersed than was everbefore possible. Result: a superiordegree of magnetic randomness,and thus, built -in quietness. Tomake sure that the roll of Kodaktape you purchase is as "quiet"as possible, we also bulk eraseeach roll. By "randomizing" theparticles' polarity in all dimensions,foreign signals picked upduring manufacture are eliminated.This fairly pristine state doesn'tlast long. Once the tape has beensubjected to the erase field andrecord bias from your recorder, acertain degree of randomness islost. So- called zero -signal noiseresults because a recorder's erasesystem is not as efficient as a bulkeraser. Whereas bulk eraserscause 3- dimensional decay of theremnant signal, an erase headcauses decay in one dimensiononly -along the length of thetape. This explains why zero -signal noise is always higher thanbulk -erase noise.Blue plate special - noisewiseNoise in the presence of a recordedsignal -modulation noise-is the real meat and potatoesof tape performance. Testing formodulation noise is a bit tricky,however, because ac program andnoise get mixed up in the amplifier.And if we are to determinethe amount of noise in a system,it's imperative that we distinguishbetween one and the other.One way to do this is to use whatour scientists refer to as a dcequivalent in r. in. s. milliampsof an ac signal.Simply explained, we selectthe ac signal level that representsthe practicallimit forlinear recording-2% third harmonicdistortion.Then weapply a dc signalto the recordhead and increasethe recordcurrent untilit reaches thesame level as that of the above acsignal. On the tape we have recordeda "zero frequency" programplus the modulation noisecontributed by both equipmentand tape. Since the reproduceamplifier filters out dc signals,only the modulation noise coniesthrough, and this can be measuredby an output meter.Strike up the band passFinal proof-of-the-pudding isto examine the total noise spectrumthrough band pass filters.Fun! One could, for example,measure the noise that comesthrough a 1 -cycle band pass filter-even get a sgmal -to -noise ratioof about <strong>11</strong>5 db. But this reallytells nothing about the tape'spractical performance. For as thegraph shows, there is much morenoise in the lower frequencies thanin the higher. For more meaningfulevaluation, we specify twosignal -to -noise ratios...one for theaverage low frequencies (20 -<strong>10</strong>00cycles at 15 ips) and ene for thehigh frequencies (<strong>10</strong>00- 15,000cycles at 15 ips) . We are happyto report that Type 31A (Kodak'sgeneral- purpose /low -print tape)rates as much as 6.5 dbs better inthe low frequencies and 1.5 dbsbetter in the high frequencies. AtKodak, "shhh" is the word.KODAK Sound RecorcliugTapesare available at most electronic,camera and department stores.New, 24 -page, comprehensive"Plain Talk" booklet covers allthe important aspects of tapeperformance, and is free on request.Write: Department 8,Eastman Kodak Company,Rochester, N.Y. 14650.y0SOUND RECORDING TAPECEastrnan Kodak Co. MCMLXIEASTMAN KODAK COMPANY, Rochester, N. Y.OCTOBER -NOVEMBER, <strong>1965</strong>17


zipRIGS ANDRIGAMAROLE23 CHANNEL DUAL CONVERSION CBAll crystals provided for 23 crystal -controlledtransmit & receive channels!WIRED ONLY Rugged 5-watt CB transceiverwith "space-age" 23 channel fre-$169.95quency synthesizer. Gives youbullseyes two -way communicationin both fixed and mobile locations with equalease. At your dealer now, the EICO Sentinel 23 is thenew CB rig with every wanted and useful feature!ri}iTransistorized 12 VDC & <strong>11</strong>7 VACdual power supply eliminates vibrator hash.Super -selective dual conversion superhetrequires % uV for <strong>10</strong>db S /N.Crystal -controlled 6mc IF and three 455kc IF's.Effective automatic impulse noise limiter,wide -range AGC.Delta tuning for receiving off -frequencytransmissions.Adjustable squelch and standby switch.Illuminated "S" meter /RF output meter.Single knob channel selector with illuminated dial.Converts to 3.5 watt PA system withremote speaker.TURNER 333 noise -cancelling ceramic p -t -t mike.Headphones /external speaker jack.Scuff -proof textured blue vinyl finishedsteel cabinet.Anodized extruded aluminum panelwith polished edges.Tr Electronic Instrument Co. Inc.131 -01 39th Avenue, Flushing, N. Y. <strong>11</strong>352Send for INS Full -line CatalogNameAddressCity State-----R<strong>TV</strong>.aHope that all of you are finding the newCB rules and regulations relatively easy tolive with. The basic rules are easy enoughto remember -if you find it necessary to talkto a station which isn't part of your ownnetwork (that is, if it has a callsign whichis different than yours), keep the yakkingon Channels 9 through 14, or on Channel 23.Keep your transmissions short and if youfeel the need to discuss the technical meritsof your equipment, use the telephone or(even better yet), get a Ham radio license.We at RADIO -<strong>TV</strong> EXPERIMENTER are doingour share in keeping the band "clean" bykeeping our readers informed on the latestFCC rules (See Positive Feedback in thisissue) and encouraging good CB operatingproce_lures.Tiny But Tough. One of the more excitingentries into the CB equipment field duringrecent months is the new RaytheonTWR -7 rig -an all transistor unit which isprobably the smallest full -power 5- channelset ever offered for CB use.This slick looking little set (not muchlarger than a pair of eyeglasses) mountshandily in any car or truck, has a universalbracket which further simplifies installationand allows the unit to he tilted for maximumaccessibility.Our photo shows the TWR -7 being putthrough its paces by Susie Henriksen (inNew York's Central Park) who told us thatamong the unit's features are push -to -talk, ahighly effective 2 -stage noise limiter, an adjustablesquelch and a micro -lamp whichindicates amplifier output. Having a provisionfor an external loudspeaker, theRaytheon TWR -7 may also be used as amobile public address system.Designed for use in the new H.E.L.P.(Highway Emergency Locating Plan) program,which, it is hoped, will give all motoriststhe ability to summon immediate aid incases of road emergencies, the TWR -7 comesRADIO -<strong>TV</strong> EXPERIMENTER1


I440DeVry Tech PreparesYou for ManyTypes of JobsinElectronicsIndustrialElectronicsTelevisionYour ownbusinesselIn Day or Evening Classes OrIn Privacy of Your Home (Spare Time)If you're a young man looking for a career to grow in, and to growwith - look into electronics. Or if you're 18 to 45, sick of your routine joband fed up with a small paycheck - look into electronics. Forhere's a field offering real money, a promising future, fine careers. Whenafter thorough trining you can say: "I'm an electronics technician,"you're a man of standing in your community. And you're ready for manyexciting opportunities that depend on electronics - from <strong>Radio</strong> and Television,Radar, Broadcasting or Industrial Electronics - to Automation,Computer or Missile Control work.But don't be stopped by the word "electronics."You don't need advanced education or previous technical experienceto start our program. DeVry trains you with tools in hand and equipmentin front of you, with "programmed" texts and visual aids - eitherat home or in one of our modernly equipped resident schools. We knowyou will be pleased with what we have to offer. Fill outand mail the coupon for details.50,000GRADUATESIn only 34 years. DeVryhas grown to be one ofthe world's largest electrnnicseducatianalcenters.SEND FOR FREEBOOKLETS NOWJust send the coupon;get the story of the electronicsfield - and how youmay prepare for It.2,200 RESIDENTSTUDENTSIn day and eveningclasses DeVry Tech's modern training centers areeducating men for tinecareers.ACCREDITED MEMBEROF NATIONAL HOMESTUDY COUNCIL5,000 FIRMS HAVEHIRED OUR GRADUATESDeVry men are soughtafter by industry. a realadvantage for you whenyou graduate.PART TIME INCOMEWHILE LEARNINGMake extra money servicingradios, <strong>TV</strong> sets, Hi -Fisystems in your sparetime - surprisingly soon.MAIL THIS COUPON NOWDeVRY TECHNICAL INSTITUTE4141 Belmont Ave., Chicago. III. 60641, Dept. RTE -8 -VPlease give me your two free booklets. "Pocket Guide to RealEarnings" and "Electronics in Space Travel "; also include detailson how to prepare for a career in Electronics, 1 am interested inthe following opportunity fields (check one or more):rra9.j Space & Missile Electronics CommunicationsTelevision & <strong>Radio</strong>ComputersEarningsMicrowavesAutomation ElectronicsIndustrial ElectronicsBroadcastingRadarElectronic ControlNAME- _ADDRESS_CITY__AGE-APTLi Check here of you are under 16 years of age.Canadian residents: Wrote DeVry Tech of Canada, Ltd.2098 970 Lawrence Avenue West. Toronto 19, OntarioK, 1yCJ IJ


SCR -625 Mine Detector(treasure locator) new, with btrys á 45.004 Conductor Wire, flat, roll 150 feet 1.50Carbon Mike, Canadian Air Force, new, noise cancelling 1.2528 Volt DC 3 Amppower sply kit, operates on house current 5.50British Snooperscope Tube,new, w /specs. (see in dark) 4.00US Snooperscope Tube =6032 w'sheet 6.50Infra Red Filter use on lights) passes infra red 1.75Infra Red Detector Capsule new 1.25T -45 Air Force Lip Mike (carbon) .75T -30 Air Force Throat Mike(makes underwater intercom) .50Polaroid Polarizing Filters 2 sheets 5x5 inches 1.00SCR Light Dimmer Kit with instructions 4.50Epitaxial Transistors 300 mc, TO-18, like 2N960...3/ 1.00<strong>10</strong>0 Watt Power Transistors like 2N277 2/ 1.00SCR <strong>10</strong>0 PIV 20 amps...51.25 50 PIV 20 amps... 1.00Transistors Factory Marked, Your Choice75C each 12 for 7.502N339-2N340-2N341-2N342-2N343-2N497-2N498-2 N 54 7.2 N 54 8.2 N 549 -2 N 551.2 N 552.2 N 65 7 -2 N 728 -2N755-2N754-2N841-2N843-2N<strong>11</strong>17-2N1206Prism, Pocket Rainbow, hold in sun for spectrum .60M -3 Military Infra Red Sniperscope, operational 225.00Selenium Sun Cells electricity from sun, 5 with book 1.503AP1 Oscilloscope Tube 1.00Crystal Mike w /cord 8 plug, for tape recorders, etc 1.35<strong>Radio</strong>sonde Transmitter w /tubes, new 1.25Dynamic Earphone hearing aid type, w /cord 8 plug .60Wired Memory Planes4096 $12.50; 8192 $15.00; 16,384 35.00IBM Ferrite Memory Cores,loose, with spec sheet 200/ 1.00Above is a sampling from our 80 page catalog. Send 25t forcatalog. All material listed FOB Lynn, Mass. (you pay shipping).JOHN MESHNA, JR.19 ALLERTON ST., LYNN, MASS.TAPE RECORDER(liquidation stock)$8.99Liquidation of ourspecial purchase oftape recorders completewith excellent21/2" speaker andmicrophone. A $20value. This production left overfrom giant nationaldepartment store promotion whererecorders were taped with a message to give to passing cus-tomers. Comes complete with standard Ih" magnetic tape. Usefor messages, rig with remote control invisible thread for detectivework. Has unique endless loop feature. Hide anywhere, concealIn toy animal and let it make outrageous remarks to guests.Hundreds of uses. While they last. Send $1 deposit for C.O.D.A 14 day money back guarantee.MISSION LIQUIDATORS.P.O. Box 4187, San Fernando 24, California.20A JOB or a POSITION?The diffrence is EtECrRONIC MATHEMATICS.Cali ' i YEW WA, TU LEARN. -l. H. S. I. \\'AY.A complete home study course in electronic ninth tohelp you get the position you want -MORE MONEY -MOitE RESPECT.COURSE PREPARED BY COLLEGE PROFESSORSwho have lectured to thousands of men on math andengineering. You learn at home quickly, easily -ASFAST as you want.YOU SIGN NO CONTRACTSPay only if satisfied- -you owe it to yourself to examinethe INDIANA HOME STUDY INSTITUTE COURSE1,% RLECTNO.WC MATH.FREE BONUS-it you Join now. refresher course inbasic arithmetic.Write for Brochure -No ObligationTHE INDIANA HOME STUDY INSTITUTEDept. R<strong>TV</strong> -<strong>10</strong>, P. O. Box <strong>11</strong>89Panama City, Fla. 32402Rigs and Rigamaroleequipped with crystals for CB Channel 9,which has been designated as the NationalCB Calling and Emergency Channel. Thischannel is monitored by thousands of clubsand individual CB'ers across the nation.You would have to look hard to see the tiny,but tough, Raytheon TWR -7 CB rig in thephoto. Just squint down at the area betweenthe dashboard and the young Miss's right foot.One emergency which seems to face all ofus, for instance, is a "dead battery." TheRaytheon people claim that their rig willeven run from such a battery -one which isso dead that it not only fails to start theengine, but won't operate the cigar lighter,or headlights, or heater, or even light thetail lights -and that's about as "dead" asyou'll ever have to worry about.The Raytheon TWR -7, which is sellingfor $129.95, is available from many CBshops and is also being offered by authorizeddealers as optional equipment on both Fortand International Harvester vehicles. Furt'data on the TWR -7 may be obtainedRaytheon Company, Dept. RR, 21Grand Avenue, South San FrancisMike Booster. If you have ev,your CB rig was short changingmodulation department, a newthe CB market may be the solRADIO-1.


i}0:éii:!ef7i1$i4+:4ï=aia:sif3EWitIMILittS"lt04< "NONANtalcl®s6' fitPRAIWEA3:ttlMMItttlR.hr u.wt.».t;Your ticket to a good job in electronics.These men will tell you how to get it!Matt Stncsynski, Senior TransmitterOperator, <strong>Radio</strong> Station WBOE."The Commercial FCC License is a 'must'for a career in broadcasting. I took CIE'sHome Study Electronics Course and, thanksto their 'Auto -Programmed' teachingmethod, passed the 1st Clam FCC LicenseExam on my first try! I now have a goodjob in studio operation, transmitting, proofof performance, equipment servicing."How about you? If lack of an FCC License is holdingyou back, it's time you looked into Cleveland Instituteof Electronics Home Study. All you have to dois send us the coupon ... and in a few days, you'llhave the complete story. And remember ... ClevelandInstitute backs their programs with this exclusive,money -back warranty: "A CIE License Course willbquickly prepare you for a Commercial FCC Licenseexam. If you complete the course but fail to pass the`cam on your first attempt, CIE will refund all tuition."started now. Send coupon for free booklet "HowTech! , Get an FCC License." There's no obligation.hveland InstituteCHICAGO & f Electronics<strong>11</strong>1 S t Ì t ItTORONTOOCTOBER- NOVEMBI EMBER, <strong>1965</strong>Chuck Hawkins, Chief <strong>Radio</strong> Technician.Division 12, Ohio Dept. of Highways."My Cleveland Institute Course enabledme to pass both the 2nd and 1st Class LicenseExams on my first attempt ... even thoughI'd had no other electronics training. I'mnow in charge of Division Communicationsand we service <strong>11</strong>9 mobile units and sixbase stations. It's an interesting, challengingand extremely rewarding job."St., Dept. EX-14 Cleveland, Ohio 44<strong>11</strong>4 LCIECleveland Instituteof Electronics1776 E. 17th St., Dept. EX-14Cleveland, Ohio 44<strong>11</strong>4Glenn Horning, Local Equipment Supervisor,Western Reserve Telephone Company."I owe my 2nd Class FCC License to ClevelandInstitute. Their FCC License Programreally teaches you theory and fundamentals. is particularly strong on transistors, mobileradio, troubleshooting and math. OurCompany has <strong>10</strong> other men enrolled withCIE and it's going to help every one of themjust like it helped me."Yes! I want to know how to get a Commercial FCC License.Please send me your FREE booklet ... without obligation.My Occupation isNameAddress_City .__ StateCounty --A leader in Electronics Training ... since 1934Age_ZipJ21


Rigs and RigamaroleIn TELEVISION, RADIO,ELECTRONICS, RADAR, SONARONLY CHRISTY OFFERSCOMPLETE TRAINING!Investigate the Chri.vty t rmpleteCourse. Why be satisfied with less?make, leaprn ngt II Trainingeasy- Youworkinglearnwith actual equipment.receiveYouComprehensive trainingthe start.fromCan EARN AS YOUYou become qualified to openownyourElectronics Repair business or togain high pay as <strong>TV</strong>, <strong>Radio</strong>, Elecetc.Technician.t<strong>11</strong>1TRAINING KITSYou receive INCLUDED!SignalMulti- Teeter,Tracer, Oscilloscope,Oscillator,erstor, Electronic Signal Oen-<strong>Radio</strong>,Timer,24' <strong>TV</strong> set (optionellRegenerativevaluable testing andequipment. otherand TWO FRIESFREEROOKLESSON$ask Inv!yoursNo obileattonfor theCHRISTY TRADES SCHOOLqhVtecDevt. ?.14<strong>11</strong>, 3314 W. Lawrence 41' "iChwago. III. 60625 - 1e01I CHRISTY 3214 TRADES SCHOOL, W. Lawrence Dept. ?-Ave. 14PleaseCnaa4o. iii. nu e25PAYING LATI, í,<strong>10</strong>7n 3EARNINGS MADE WHILEiLEARNING.NAMEADDRESSACML. =IT- SlATF 717 CODE....you have a complete portable wireless PA sys-tem. You can talk to any size group, in any sizeroom with hands free, no wires. <strong>10</strong>1 uses -public address, broadcast, musical instrumentpick -up, surveillance, etc. At electronic supplyhouses, $49.50. AMPHENOL CONSORTAmPhEnoìDISTRIBUTORarrpnenol DIVISIONDort eleclronlc,ecorporation2175 5 257 Ave , IraaIv,e.Ill 60155problems. It's the Nuvistor microphone preamplifierand booster being manufactured bySentry Manufacturing Corp., Dept. RR,P. O. Box 12322, Oklahoma City, Okla.73<strong>11</strong>2. This little gadget hooks up in secondsbetween the microphone and the rig togive your voice the much needed muscle toblast you through even the busiest, messiest,interference on the channel. If you have anolder rig (one from the days when the manufacturersweren't incorporating such fancygizmos as speech clippers and compressorsin their units), then this may be all you needto give your gear the "modern" sound andperformance. If you have a new rig, thisNuvistor microphone booster will surelymake you the big signal in your area. Bythe way, Sentry Manufacturing is headed bythe famous "Uncle George" Beyers who, formany years, was associated with InternationalCrystal Mfg. Co. The amplifier sellsonly for$9 from Sentry, who will also be happyto send you further information on the deviceplus news of some of their other newproducts. Attention dealers: Sentry is lookingfor new outlets for their switches, con -verters, and other CB gear.The Full 23 Eico Electronic InstrumentCo., Inc., of 131 -01 39th Avenue, Flushing,N. Y. <strong>11</strong>352, let us have a look at their new"Sentinel 23," a 23 channel dual conversiontransceiver which takes advantagelatest of thefrequency synthesis techniques in itsdesign.Priced at $169.95 (wired and tested),unittheincorporates a 6 -mc /s first IF stage forhigh image rejection (rated at better than60 db) and a second IF of 455 kc /s withsix tuned circuits to provide a high degreeof selectivity (rated at 6 kc /s at points 6 dbDesk top view of EICO's new "Sentinel 23"CB transceiver with full frequency synthesison all channels. Unit comes completepush -towith-talk, noise cancelling microphone.RADIO -<strong>TV</strong> EXPERIMENTERI,


a4BUILD 20 RADIOonlyCIRCUITS AT HOMEwith the DeluxePROGRESSIVE RADIO "EDU -KIT"®A Practical Home <strong>Radio</strong> CourseNow Includes12 RECEIVERS3 TRANSMITTERSSQ. WAVE GENERATORSIGNAL TRACERAMPLIFIERSIGNAL INJECTOR* CODE OSCILLATORNo Knowledge of <strong>Radio</strong> NecessaryNo Additional Parts or Tools Needed* EXCELLENT BACKGROUND FOR <strong>TV</strong>SCHOOL INQUIRIES INVITED* Sold In 79 CountriesYOU DON'T HAVE TO SPENDHUNDREDS OF DOLLARS FOR A RADIO COURSEThe "Edu-Kit' offers you an outstanding PRACTICAL HOME RADIO COURSE at ausekofothe most modern K ''ethodssofnhome training. dYou will learn radio theory s makingconstlion practice and servicing. THIS IS A COMPLLÍE RADIO COURSE IN EVERY DETAIL.You will learn how to build radios, using regular schematics: how to wire and soldersIn a professional manner: how to service radios. You will work with the standard type ofpunched metal chassis as well as the latest development Of Printed Circuit chassis.You will learn the basic principles of radio. You will construct. study and work withRF and AF amplifiers and oscillators. detectors. ctifiers. test equipment. YOU will learnand practice code. using the Progressive Code Oscillator. You will learn and practicetrouble -shooting, using the Progressive Signal Tracer, Progressive Signal Injector. ProgressiveDynamic <strong>Radio</strong> & Electronics Tester, Square Wave Generator and the accompany.Ing instructional material.You will receive training for the Novice, Technician and General CI f F.C.C. <strong>Radio</strong>Amateur Licenses. You will build Receiver, Transmitter. Square Wave Generator. CodaOscillator. Signal Tracer and Signal Injector circuits, and learn how to operate hem. Youwill receive an excellent background for television. Hi -Fi and Electronics.Absolutely no previous knowledge of radio or sciencei. required. The "Edu -Kit" isthe product of many years of teaching and engineering experience. The "EduKit" willprovide you with a basic education in Electronics and <strong>Radio</strong>, worth many times the lowprice ou pa . The Signal Tracer alone is worth more than the ripe of the kit.THE KIT FOR EVERYONEYou do not need the slightest background ages and backgrounds have successfullyIn radio or science. Whether You are Inter- used the "EduKit" in more than 79 counestedin <strong>Radio</strong> & Electronics because you tries of the world. The "EduKit" has beenwant an interesting hobby. a well paying carefully designed. step by tep. on thatbusiness or a job with a future. you will find you cannot make a mistake. The Edu -Kittheallows you to teach yourself at your ownMany thousands w ofh Individual. S Ofa all rate. No Instructor Is necessary.PROGRESSIVE TEACHING METHODThe Progressive <strong>Radio</strong> 'Edu-Kitand iKit" u n' the modern educational principle of Learn by DoinIs the foremost educational radio kit In the world.universally accepted as the standard In the field of electroonics training.g. The "Edu.learn schematics, study theory practice trouble shooting -all In a closely Integrated programdesigned to provide an easily-learned, thorough and Interesting background In radio.You begin by examining the various radio parts of the "Edu- Nit.' you then learn thefunction. theory and wming of these parts. Then you build a simple radio. With this firstset you will enjoy listening tO regular broadcast stations, learn theory. practice testing1rand trouble -shooting. Then you build a more advanced. more eadvancev theoryradii .a learnand techniques. Gradually. In a progressive r willfi d yourself constructing more advanced multi -tube radio circuits. and doing work Ilke apr ftYsicnal <strong>Radio</strong> Teehnlclan.Transmitter, Cods Oscillator, SignalYnclud ìn the Edu -Kit" Course are Receiver.Tracer, Square Wave Generator and Signal Injector Circuits. These are ans of profess, oralbreadboard" experiments, but genuine radio circuits, by mewiringmethodas "Printed soldering on These chassis, circuits operate° on e your rre. radio construction knownmetalula AC Or DC current.THE "EDU -KIT" IS COMPLETEYou will receive all parts and instructions necessary to build twenty different radio andelectronics circuits, each guaranteed to operate. Our Kits contain tubes. tube sockets, variable,electrolytic. mica, and paper dielectric condensers, resistors, tie strips.hardware, tubing. punched metal chassis, Instruction Manuals, hook -up wire. solder.selenium rectifiers, coils, volume controls and switches, etc.In addition, you receive Printed Circuit materials, including Printed Circuit chassis.pecial tube sockets, hardware and instructions. You also receive a useful set of tools, aprofessional electric soldering iron, and a self- powered Dynamic <strong>Radio</strong> and electronicsTester. The Edu -Kit" also includes Code Instructions and the Progressive Code or. Oscillator.n addition to F.C.C. <strong>Radio</strong> Amateur License training. You will also receiveinwith the Progressive Signal Tracer and the Progressive Signal Inject ConsHigF idelity Guide and a Quia Rook. You receive Membership <strong>Radio</strong>-<strong>TV</strong> Club.tion Service, Certificate of and Discount Privily in You receive all parts, tools.etc.Merit is toPRINTED CIRCUITRYAt no increase in price. the "Edu- Kit"now includes Printed Circuitry. You builda Printed Circuit Signal Injector. a uniqueservicing Instrument that can detect many<strong>Radio</strong> and <strong>TV</strong> troubles. This revolutionarynew technique of radio construction is nowbecoming popular in commercial radio and<strong>TV</strong> sets.A Printed Circuit is a special insulatedchassis on which has been deposited a conductingmaterial which takes the place ofwiring. The various parts are merely pluggedin and soldered to terminals.Printed Circuitry is the basis of modernAutomation Electronics. A knowledge of thissubject is a necessity today for anyone interestedin Electronics.Reg. U.S.Pat. Off.Training Electronics Technicians Since 19415 IFREE EXTRASSET OF TOOLSSOLDERING IRONELECTRONICS TESTERPLIERS- CUTTERSVALUABLE DISCOUNT CARDCERTIFICATE OF MERITTESTER INSTRUCTION MANUALHIGH FIDELITY GUIDE QUIZZESTELEVISION BOOK RADIOTROUBLE SHOOTING BOOKMEMBERSHIP IN RADIO -<strong>TV</strong> CLUB:CONSULTATION SERVICE FCCAMATEUR LICENSE TRAININGPRINTED CIRCUITRYI SERVICING LESSONS IYou will learn trouble-shooting anda manner. YOUwill) practice repairs ppeon the sets thatyou construct. You will learn symptomsnd causes of trouble in home. portand car radios. You will learn how touse the professional Signal Tracer. theunique Signal Infector and Me cinnamic<strong>Radio</strong> a. Electronics Tester. While youare learning in this practical way. youwill be able to do many a repair lob foryour friends and neighbors. and chargefees which ill far exceed the price ofthe Edu-Klt." OurWill help You wall any al Serviceyou may have.FROM OUR MAIL BAGJ. Stataltis. Poplarbury. Conn.. writes: of 5 ollard II.'repairedSeveral sets for my friends. and mademoney. The "Edu -Kit" paid for itself. Iwas ready to spend $240 for Course.but I found Your ad and sent for yourKit.Ben Valerio. P. O. Box 21. Magna.Utah: "The Edu -Klts are wonderful. HereI am sending you the questions and alsothe answers for them. I have been In<strong>Radio</strong> for the last seven years, but liketo work with <strong>Radio</strong> Klt, and like tobuild Testing Equipment.ye every minute worked with thedifferentfine. Also like ' to et you T know that at'feel Proud of becoming member of your<strong>Radio</strong><strong>TV</strong> Club."Robert L. Shutt. 1534 Monroe Ave..HuntinYgton. W. Va.: Thought I woulddropmy Edu -Kit! and was reallyaamazedthat such a bargain can be had at sucha low price. Ias have already started re-¢f``riends were Oreallydsurp ised rto 'see meTheTrouble- shooting Tester that comes thtrouble Is really and findsIs any tor - - -- UNCONDITIONAL MONEY -BACK GUARANTEE - 1ORDER FROM AD- RECEIVE FREE BONUSRADIO & <strong>TV</strong> PARTS JACKPOT WORTH $15C1 Send "Edu -Kit" postpaid.1 enclose full payment of 526.95.I 1 Send "Edu -Kit" C.O.D. I will pay $26.95 plus postage.fi Rush me FREE descriptive literature concerning "Edu. Kit."NameAddressPROGRESSIVE "EDU- KITS" INC.i ATT. S. GOODMAN, M S in ED. . PRES.)<strong>11</strong>86 Broadway, Dept. 532NN, Hewlett, N. Y.OCTOBER- NOVEMBER, <strong>1965</strong>23


INSTALL YOUR OWN<strong>TV</strong> OR FM ANTENNASave up to $50FREE! Valuable new Booklet, jam -packed with vital, but little -known information that will enable you to install the world'sbest antennas at tremendous savings!PARTIAL LIST OF CONTENTS: Secrets of accurate AntennaOrientation How to get a <strong>TV</strong> and FM Reception Analysisfor your area How to obtain the unique new Antenna'DIRECTIONALIZER' Kit Latest advances in <strong>TV</strong> &FM Antenna TechnologyALSO INCLUDED FREE!Specifications and prices of famous Channel Master AntennaKits for VHF & UHF (Black & White, Color), FM & FM- STEREO.Also Rotators and Indoor Antennas. DON'T DELAY! Sendfor your copy now! Write: Jefferson-King Inc., Dept. <strong>TV</strong>E -9,South Fallsburg, N. Y. 12779..JEFFERSON -KING INC.Dept. <strong>TV</strong>E -9, South Fallsburg, N.Y. 12779Yes, rush me Free literature described above!NAMEADDRESSCITYSTATEZIPRigs and Rigamaroledown) for the squashing of any adjacentchannel interference. Sensitivity is a mostrespectable quarter of one microvolt for a<strong>10</strong> db signal to noise ratio.Powered from either <strong>11</strong>7 VAC or 12VDC, the "Sentinel 23" features a transistorizedpower supply which eliminates thepossibility of annoying vibrator "hash" whichhas plagued mobile CB'ers in the past.The transmitter puts more than 3 wattsinto the antenna, and the output amplifieris designed for maximum power transfer intoantenna loads ranging from 30 to <strong>10</strong>0 ohmsby means of an adjustable pi- network. Abuilt -in <strong>TV</strong>I filter will also be found as ahandy addition in many areas.Other goodies include a very effectiveautomatic impulse noise limiter, wide rangeautomatic gain control, adjustable squelch,a standby switch, a built -in public addresssystem (when used with an external speaker),a Turner Model 333 noise cancellingmike and even a jack for a pair of headphones.Weighing in at 14 lbs. and measuring434" high, 12" wide, 71/2" deep, the "Sentinel23" looks like it will be a popular memberof the CB fraternity. Ask Eico to send youadditional information on this one.Guess that's about it for this issue. Nexttime around we'll have a look at some moreexciting additions to <strong>11</strong> meters.r,tBUY IT AT RADIO-<strong>TV</strong> PARTS STORLMULTICORE SALES CORP. PORT WASHINGTON, N."Looks screwy, but I find my car'santenna gives much better reception."24RADIO-<strong>TV</strong> EXPERIMENTER


etChoose Your Tailor-MadeCourse in N.T. S.'PROJECTMETHOD" ELECTRONICS!Now! N.T.S. - one of America's oldest leading home -study and residenttechnical schools - offers you GREATER CAREER OPPORTUNITIESIN ELECTRONICS. N.T.S. "Project Method" home training lessons_are shop -tested in the Resident School in Los Angeles. Youwork on practical job projects, learn to use shopmanuals and schematics. Your N.T.S. training isindividual. You proceed at your own pace. The Schools'practical methods, plus more than 60 years of experience,have helped thousands of students all over the world tosuccessful careers. Prepare now for a secure future in one of 8N.T.S. Electronics Courses designed to fit your own particular needs.aCHOOSE YOUR FIELD - INSURE 4YOURWorkon theelectronic-brains atindustrycomputers dataV essing andother automationequipment Becomea TY, <strong>Radio</strong> Technicman.ar electron," hem engineer,or succeed in your own businessFUTURE!ELECTRONICS -<strong>TV</strong>- RADIO- SERVICING & COMMU-1 NICATIONS A basic course thoroughly coveringfundamentals of electronics, radio, <strong>TV</strong> servicingand communications.MASTER COURSE IN ELECTRONICS -<strong>TV</strong>- RADIO,2 PLUS ADVANCED <strong>TV</strong> & INDUSTRIAL ELECTRON-ICS This course covers everything included inCourse No. 1 plus Automation and every phase ofthe Electronics industry.ej FCC LICENSE Preparation for this governmenta license essential for interesting jobs in radar,radio, television, communications, guided missiles,many others. Upon completion of this course, ifyou do not pass the FCC exam for a 1st ClassCommercial <strong>Radio</strong>telephone License your tuitionwill be refunded.4 RADIO SERVICING (AM -FM- Transistors) Train forradio sales and service with dealer or distributor.5TELEVISION SERVICING ( Including Color) Coversinstallation, adjustment, repair and servicing ofblack and white and color television ... preparesyou for your own sales and service business.C STEREO, HI -Fl AND SOUND SYSTEMS A grow -U ing field. Prepares you to build, install and servicemodern sound equipment for home or industry.tBASIC ELECTRONICS Gives you the fundamentatsyou must know to build on for a futureElectronics career. Also offers an excellent backgroundfor Salesmen, Purchasing Agents, andothers in Electronics.ELECTRONICS MATH Simple, easy -to- follow instructionsin the specialized math you need inmany electronics jobs.Most courses include Equipment Kits. THERE ARE NOEverything Included inyour lee tuition.ti' -NIT DEPOSITS.CLASSROOM TRAINING ATLOS ANGELESYou can take classroom training in Ourfamous Resident School at Los Angelesin Sunny Southern California. N.T.S. isthe oldest and largest school of itskind. Associate in Science Degree alsooffered in our ResidentCheckResident School boa in coupon for fulldetailsMAIL COUPON TODAYFOR FREE BOOK ANDSAMPLELESSONIn Field of Your Choice. itYou enroll by Mail - and Save Money. No Salesmen: Thismeans lower tuition for you Accredited_ Member N.N.S.C...NATIONALHIGH SCHOOL AT HOMELearn easily. New modern method. Nationalalso offers accredited high schoolprograms for men and women. Tubeonly subjects you need. Study at yourown pact.textbooksyoursto keep -everything included atone low tuition. Check Nigh School boain coupon for information.SCHOOLSw,or *e.er'c s.,.cs ws4000 S. Figueroa St., Los Angeles, California 90037Sample LeesonNATIONAL rl`1iS' ci SCHOOLS (Je4000 S. Figueroa St., Los Angeles. California 9007!Please Rush FREE Electronics 'Oppo rtunty Book"Iand s mple lesson on course checked below'1 Electronics -TY <strong>Radio</strong> Servicing & Communications I_;.J Master Course .in"El'1 Advanced <strong>TV</strong> i Industrial ElectronicsI L FCC LicenseDept.I _ <strong>Radio</strong> Servicing (AMFM- Transistonl 'Teieasmn Servicing (Including Color)etas oc <strong>11</strong>L' Stereo, HF Fi and Sound Systems1D eadc Electronics Electronics Math <strong>11</strong> NameAga_1 Address!City Stale Zip1 D Check e L it Interested ONLY in ClassroomTraining at_E Check here for High School Department Catalogonly.eatIIOCTOBER -NOVEMBER. <strong>1965</strong>


BOOKMARKBIn each issue of RADIO -<strong>TV</strong> EXPERIMENTERyour of Bookworm picks the best books releasedduring the past few months andreviews them for you. Unfortunately, spacelimits detailed reviews to three, maybe four,per issue. Result -too many good books fallby the wayside for lack of space. So, in thisissue the reviews have been capsulated permittingmention of some books that havebeen overlooked in the recent past.For the Ham- to -be. Amateur radio operatorsmake friends all over the world,assist in emergency operations, relay messagesInternational Morse Code, gives the fundamentalsof electronic theory, lists the currentFCC rules and regulations, and fully preparesyou, through study questions and sampleexaminations, for either the Novice,Technician, or General -Class license tests.To get your copy write to John F. RiderPublishers, Inc., 850 Third Avenue, NewYork, New York <strong>10</strong>022. Authors Berensco- authored one other volume of interest,Building the Amateur <strong>Radio</strong> Station, availableat the same publisher.Transistor Specs. Anyone who workswith transistors is familiar with the difficultiesinvolved in locating electrical and physi-©: ,,,C160 pagesSoft cover52.95to and from distant points on the globe fillingtheir leisure hours with armchair excitementand adventure. Interested? Then pick up acopy of Getting Started in Amateur <strong>Radio</strong>by Julius Berens, W2PIK and Jack Berens,W2MDL. This study guide rapidly movesthe prospective Ham radio operator towardthe goal of operating his own licensed station.The text tells how to quickly learn the160 pagesSoft cover$2.95cal data for a specific transistor. A newbook, Transistor Specifications Manual, hasbeen compiled so as to alleviate these troublesomeproblems. The text lists the electricaland physical parameters along withmanufacturers of more than 3500 transistortypes. Electrical specification data includesall the important electrical data required tomake a practical analysis of the transistor ina circuit. Each transistor is referred to anoutline drawing that provides all of the physicalmeasurements necessary to install ormount the unit or to determine whether thetransistor will meet a particular set of requirements.All transistors listed in this manualare referenced to a diagram that indicatesThe only lab instrument you needto complete Scott's new 80 -wattsolid -state stereo amplifier kit26Scott's new solid state amplifier kit is completely protected against transistor blowout.An ingenious "Fail- Safe" circuit using an ordinary light bulb takes the loadoff expensive silicon transistors when you first plug in your LK -60 ... so, if you'vemade a wiring error (almost impossible with this kit), no harm done! Other brightnew ideas from Scott: preassembled, factory- tested modular circuit boards; full -color instruction book; amazingly low price: $189.95Writs for complete spec sheet: R. R. Scott, Inc., III PowdNmill Road. Maynard, Mass. Export.Scott International, Maynard, Mass. Cable MIFI. . Prices slightly higher west of Rockies. SCOTT'RADIO -<strong>TV</strong> EXPERIMENTER


the physical position of the emitter, collector,base, and any other terminal located on thesemi -conductor. A section of older transistortypes is included to help identify types thatare usually thought to be unobtainable. Inmany instances these older types are nowavailable but are identified with the newertype number. To get your copy of this handyworkbench transistor guide write to HowardW. Sams and Co., Inc., 4300 West 62ndStreet, Indianapolis 6, Indiana.Calling All Old Salts. If you would liketo rediscover the romance of yesteryear'swireless then pick up a copy of My SanFrancisco Story (on the Waterfront and theWireless) by Commander Richard JohnstoneU.S.N.R. (Retired). This biography revealsS1 fu MIKIHO fI0Pa......,r.."Ilk 40.1l60 pagesSoft cover$2.75colorful facts on early Pacific coast ships aswell as the young years of radio, then knownas the Wireless. The author goes way backbefore ships had 3- letter calls (19<strong>11</strong>) andamateurs were free to operate on any frequencyabove 200 meters. Admittedly, themanuscript should have been edited heavilybefore publication, however the thoughtsand facts presented by Commander Johnstonewill become a valuable guide to futurehistorians. For your copy of My San FranciscoStory send $2.75 to Richard Johnstone,67 Heather Way, Larkspur, California94939.Hi -Fi Troubles. The Gernsback Libraryhas come up with a new title that may be oneof the largest on record -Hi -Fi Troubles... how you can avoid them ... how you cancure them by Herman Burstein. High fidelityequipment is complex and sophisticated, andthe more complex it is, the more apt it is todevelop troubles. This text tells you how tomaintain your audio system to keep it inpeak performance. It tells you why you havetroubles, how to locate them, and how toeliminate them. More important, it tells youwhat not to do. This is an invaluable bookfor every audiophile that helps him eliminateYOUR NEWCOPY ISWAITINGFREE! For fun and pride in assembly, for longyears of pleasure and performance, for new adventuresin creative electronics mail the couponbelow and get Conar's brand new catalog ofquality do- it- yourself and assembled kits andequipment. Read about items from <strong>TV</strong> set kitsto transistor radios ... from V<strong>TV</strong>M's to scopes. from tube testers to toils. And every itemin the Conar catalog is backed by a no- nonsense,no- loopholes, money -back guarantee! See foryourself why Conar, a division of National <strong>Radio</strong>Institutg, is about thefastest growing entry CVJin the quality kit andequipment business.MAIL THIS COUPON NOW NMI1,1.s(I3939 Wisconsin Ave., Washington 16, D.C.Please send me your new catalog. ,. NameAddressCity State Z -Code_OCTOBER -NOVEMBER. <strong>1965</strong>27


BookmarkHi -Fi Troubles...how youcan avoid them...how youcan cure them160 pagesSoft cover53.95by Hera 1, Il lBurster 1Fill In coupon for a FREE One Year Subscriptionto OLSON ELECTRONICS' Fantastic ValuePacked Catalog- Unheard of LOW, LOW PRICESon Brand Name Speakers, Changers, Tubes,Tools, Stereo Amps, Tuners, CB, and other Values.Credit plan available.NAMEADDRESSCITY ZONE STATEIf you have a friend interested in electronics sendhis name and address for a FREE subscription also.403 S. Forge Street Akron, Ohio 44308BURNOUT -PROOFMETER MOVEMENTSPROFESSIONALINSTRUMENTSONE YEAR FactoryGuaranteeUp to <strong>10</strong>0,000 OhmsPer Volt SensitivityClose Tolerance ± 2%Jeweled MovementsInstrument QualityMultipliers & ShuntsPackaged in Shock -Proof Custom CasesMirrored Meter ScalesModel M -330 (illust.)30K Ohms Per Volt DC$1995FOR COMPLETE DETAILS see yourDistributor or write Dept. HE2I.T I. CORPORATIONKEW GARDENS,NEW YORKproblems like excessive hum; deterioratingequipment; noise in switches, tubes, resistors;distortion; bass and treble headaches; installation;problems faced by kit builders; andstereo and tape problems. Eleven jam -packedchapters make this informative text a topbuy. Published by Gernsback Library, Inc.,154 West 14th Street, New York, N. Y.<strong>10</strong>0<strong>11</strong>.Beginner's Special. Electronic Projectsfor Students, Beginners, & Hobbyists, publishedby Semitronics Corporation, contains50 easy -to -build transistor circuit projectsanyone can make with readily available inexpensiveparts and simple tools (solderingiron, pliers, screwdriver). Parts are availablefrom Semitronics or your local electronicparts dealer. An educational service programdesigned to provide an introduction to electronicsand the space age, this <strong>10</strong>0 -page bookrequires no technical knowledge on the partELECTRONICPROJECTS96 pagesSoft cover$1.95of the reader, and tells him how to solder,recognize electronic parts, and read electronicsymbols. Clear photos, and pictorialand wiring diagrams make instructions easy.The reader can make crystal radios, sun -powered radio, electronic megaphone, flashers,hi -fi testers, appliance tester, tachometer,stereo balance, code transmitter, and 40other useful devices, providing many enjoyablehours in the world of electronics. Thetext's strong point is its parts lists which areRADIO -<strong>TV</strong> EXPERIMENTER


complete for each project. Price of the handbookis $1.95 at the local electronics dealer.or from Semitronics Corporation, 265 CanalStreet. New York, New York <strong>10</strong>013.Mathematical Who- Done -Its. Morethan two hundred fascinating riddles -drawn from every branch of mathematicsabsorbing riddles give you a wide range ofthe fundamental reasoning that underlies allmathematics. You will enjoy sharpeningyour wits upon these fascinating paradoxes-and at the same time you will find theyadd materially . to your knowledge of arithmetic,algebra, geometry, trigonometry, andcalculus. Interested? Then stop by your localbookstore or write to D. Van Nostrand Co.,Inc., 120 Alexander Street, Princeton, NewJersey.s262 pagesHard cover$4.50from arithmetic to calculus offer you countlesshours of interest and entertainmentin a new title Riddles in Mathematics -aBook of Paradoxes by Eugene P. Northrop.The mathematical background for everyoneof these paradoxes is clearly explained, andthen the solutions to all are fully stated atthe end of the book, so you can easily checkevery step in reaching the final result. These"I'd no idea we were on the same frequency."ION! CB OPERATORSAVENTsave on o citizenscitizens radio equipment}Discontinued Models fromInternational <strong>Radio</strong> ExchangeSelect that extra transceiverfor mobile or baseinstallation, or equip a newstation. Our stock includesInternational types as wellas other makes.Write Today for A Complete List of Equipment in StockINTERNATIONALRADIO EXCHANGE18 NO. LEE, OKLA. CITY, OKLA. 73<strong>10</strong>2Division Of International Crystal Mfg. Co.Dealing In Used Citizens<strong>Radio</strong> EquipmentOCTOBER- NOVEMBER, <strong>1965</strong>29


30THOUSANDS OF BARGAINSTOP VALUES IN EL PARTSNICTransistors, Modules, Speakers, Stereo, NI -FI,Photo Cells and thousands of other Electronic Parts.Send for FREE CatalogueELECTRONIC DISTRIBUTORS INC.EDIEDIDept. TA -2. 900 ElstonChicago, III. 60630Rush CATALOGUENameAddressCityStateZip CodeWRITE, WIRE OR PHONE BARRYfor biggest selection on hard to get, out of productiontype tubes. We carry most special purpose, Hi-Fidelity,European types -including BR'MAR- TELEFUNKEN -MU -LARD -AMPEREX. Also RCA, Westinghouse, G.E. and others.We are official distributors for Raytheon -Westinghousei EIMAC TUBES. W.rtr for our Iatrt catalogBARRY ELECTRONICS. Dept. X512 Broadway. N. Y.. N. Y. <strong>10</strong>012 Tel. 212 -WA 5.7000WIRELESS "MIKE" TALKS TO ALL RADIOSNow WI can TALK -SING or PLAY over the radio with thi.NEW WIRELESS MIKE. No connections of any kind -.rnd.walking. riding. t . T.ene showttee reception ton hile .by iea.alland how radio.. Transistor powered with Ñuhlite battery.Nolierea permit required (FCC IIS tided/ Guaranteedto_wJ work-1 r year Should .warrantylutfor year..Send Onlyfeu h Ck M.O. and Day portmw a7.adSL00 COD -Ln or und ra.e. fer EEJ.ii. osa lient romeantoordy to parse.. FREE. rd eNt(W.. Available only Iron) WESTERN dmADIDept. W RE -,a. kearp p, Nebr.IdenticaltwinsBest way to bring out the best in yourtape recording equipment, stereo ormono, is to use the famous SonotoneCerainikeV matched twins. Each set isa selected matched pair exhibitingsimilar coloration, frequency responseand output characteristics within ±Zdb. Ceramike models include a newlow -impedance version, 'tCMT-<strong>10</strong>50WR," for transistorized taperecorders, and "CMT<strong>10</strong>A" for tubetape recorders. Alow priced series isalso available startingat under $<strong>10</strong>.00.SONOTONE1audio products.I , Sonotons Corp.,Eiectronic Applications Div.. Elmsford, N. Y. .NEWproductsBaby Food Jars BecomeStorage ContainersA million empty baby food jars arethrown away every day, it has been estimated,and yet these empty jars make themost practical kind of storage container forthousands of things necessary in every home,office, factory, garage or store. Because aCleveland inventor had accumulated hundredsof these baby food jars and beganusing them to store his workshop suppliessuch as bolts, nuts, nails, washers, diodes,transistors, resistors, terminals, capacitors,and a hundred other things, he had to designa practical jar holder and dustproof coverto keep these workshop supplies neat and*rte tlVigg;:a Oar.M<strong>11</strong>1<strong>10</strong>3<strong>11</strong>MOO 6MUMgantc3á =MI ti= W..<strong>11</strong>1ammo= alin :WMWickliffe Industries Handy Dandysorderly. That's how Handy Dandys weredeveloped. They are a combination dust -tite cover and holder that can be snappedinto t /a" thick pegboard. Handy Dandys aremade of durable plastic, flexible enough tosnap into the pegboard without breaking theholding prongs.According to the manufacturer, WickliffeIndustries, Inc. empty baby food jars areeasy to get without cost. If no one in theimmediate or near family is raising an infant,no neighbors or friends are buying babyfoods, just wait in any super market at thebaby food display. Chances are you canmeet a dozen mothers or fathers in an hourwho have accumulated empty jars and willbe glad to have you pick them up-and thussolve their disposal problem. Handy DandysReDIO-<strong>TV</strong> EXPERI1Kï.NTER


are inexpensive, priced at $1 for 1 doz.,$2.50 for 3 doz., $4.00 for 6 doz., and$25.00 for 500. The only other expense tohaving neat and orderly storage of everythingfrom paper clips to fishing hooks is apiece of t /g" thick pegboard. This too is inexpensive.Send orders directly to WickliffeIndustries, Inc., Dept. 56, Wickliffe, Ohio.Stainless Steel PliersThese new all stainless steel pliers are thefirst rust proof, corrosion proof stainlesspliers to be offered commercially in theworld. They are fully drop forged and precisionhardened and tempered for ruggedservice. The jaw serrations are precisionWitherby Stainless -Steel Pliersmachined for full interlock enabling thethinnest objects to be securely held. Cutterwill easily cut toughest wire. These plierswill always open and close freely; no binding,stiffening, freezing or rusting. This is anideal tool for boat owners, fishermen, hunters,gardeners, motorists, mechanics, electricians,plumbers, repairmen and handymen.Comes complete with leathercloth wallet -belt holster for only $5.95. Write to Wither -by Products Division, John H. Graham &Co., Inc., Dept. 756, <strong>10</strong>5 Duane Street,New York, N. Y. <strong>10</strong>008.Linear Kilowatt Goes MobileHere's a kilowatt final that'll fit in anssize car and just about any size operatingposition you have at home. In the newHeathkit HA -14 KW Kompact, a full kwSSB linear amplifier in a cabinet that measuresjust 3 =5'16" high x 12 -M6" wide x <strong>10</strong>"deep. And what's more, the KW Kompactkit goes for only $99.95!The "KW Kompact" is a five band Iiigaramplifier (80 through <strong>10</strong> meters) that devel-OCTOBER -NOVEMBER, <strong>1965</strong>r6POPULAR SAMS BOOKSUSE THIS HANDY ORDER FORM ,Color <strong>TV</strong> Trouble Clues. Field -tested guide describingtypes of troubles likely to be encountered, trouble -shooting procedures, and proper use of test equip -'ment to speed color <strong>TV</strong> servicing.Order COL -1, only $1.95Tape Recorders -How They Work. New 2nd edition.Fully explains principles of magnetic recording, varioustypes of recorders, mechanisms and components,testing procedures, etc. Best reference bookon the subject. Order TRW -2, only $3.95<strong>TV</strong> Tube Symptoms and Troubles. Packed with photosshowing typical <strong>TV</strong> picture troubles caused by defectivetubes. Quickly helps to identify which tubesare at fault -an important servicing timesaver.Order <strong>TV</strong>T -1, only $1.50Short-Wave Listeners Gelde. invaluable for the shortwavehobbyist. Complete listings for over 300 shortwavestations by country, call letters, frequency,power, and broadcast time. Order Síß-1, only $1.25Transistor Ignition Systems Handbook. Clearly explainsprinciples, installation, tune -up, and maintenanceof these new transistor systems which are revolutionizingthe auto industry. Order ISO -1, only. .$2.50Citizens Band <strong>Radio</strong> Handbook. New enlarged edition.Covers latest Cts equipment and circuits, antennasystems, fixed and mobile installations, maintenanceand repairs, FCC rules, etc. Order CBH -2, only $2.95How To Read Schematic Diagrams. Not only shows youhow to read and interpret diagrams, but analyzeseach component, its construction, and its circuit purposeand use. Order RSD -1, only $1.50ABC's of Computers. Explains in simple terms howcomputers work and what they do. Covers analogand digital types; describes circuitry, memory devices,programming. etc. Order ABC -1, only $1.95Second -Class <strong>Radio</strong>telephone license Handbook. Completestudy course for elements I , I I and Ill of the FCC'exams. Helps you earn the license you need to repaircommunications equipment, including 2 -way mobile 1radio. Order QAN -1, only $3.95Color <strong>TV</strong> Servicing Made Easy. Full explanation of colorprinciples, circuitry, setup adjustments, and servicingof all color <strong>TV</strong> sets. 'rakes the mystery out ofservicing color <strong>TV</strong>. Order CSL -1, only $2.95<strong>10</strong>1 Ways to Use Your VOM & YTYM. Shows you how toget the most from these popular instruments, how tomake required connections, how to test properly,how to evaluate results. Order TEM -3, only . . . .$2.00<strong>TV</strong> Servicing Guide. Tells you how to apply propertroubleshooting procedures based on analysis ofsymptoms, illustrated by picture tube photos.Packed with troubleshooting and servicing hints.Order SOS -1, only $2.00Electronic Gadgets for Your Car. Practical projects forbuilding a tachometer, transistorized battery checkerand charger, spare-tire alarm, and other automotiveelectronic devices. Order CAR -1, only $2.95®IIFREE Sams Book CatalogComplete descriptions of more than300 important books covering everyphase of electronics. Send for it today.HOWARD W. SAMS & CO., INC. -Order from any Electronic Parta Distributor, ormail to Howard W. Same & Co., Inc., Dept. ItT -<strong>10</strong>t300 W. 62nd St., Indianapolis, Ind. 46206Send books checked above. $Send FREE Same Book. Catalog.enclosed.Name',ME PRINT' t\ddrees' I 'it y State lipSIN CANADA: A. C. Simmonds & Sons, Ltd., Toronto 7 swoll'3L


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SS .. 2 for $9.3000P.v 2<strong>10</strong>0<strong>11</strong>ms ... 200Ma SI BO !.o, 6 for 5<strong>10</strong>.6000P.v 200Rm ii 200Ma S4 .+ . for SIS.12000P.v 8400Rm - 200Ma S<strong>10</strong> ri . 3 for 525.S1.4 Silicon Tube Repl. $1.90 ri . 6 for $<strong>11</strong>."TAB" * SCR's * TRANSISTORS * DIODES!!!'Full Leads Factory Tested 6/ Ged! U.S.A. Mlg.PNi N,POwer. 15 Amp Round TO36 Pckg! 2N441.442. 277, 276, 05501 up to SO volt, VC60 51.25 t5 forT5278,S443. 174 up to 80v re 2 for 55N Diamond 74- 214I5S, 156. 23S. 2.2. 254, 25.,256, 257, 301, 351,e33 @O for SiPN Signal up to 350Mw TOS e25 H. 6 for 51NPN Signal IF, RF, OSC, TOS. OVS. c25 A6 for SIPNP 25670.300Mw e3$ re4 for SIPower Neat Sink Finned <strong>10</strong>0 Sa S1 43 6 for $5STAISTOR Diodes Fwd Regal .. ..1 watt 5 for 51Zener Diodes up to One Watt 6 to 200v 070 5 3 for $2Zener Diode Ten Watt 6 te 150v 51.5 Wfor SS5<strong>11</strong> Presfit 164 up to <strong>10</strong>0 Pie for $1Micro or MuSwitch CSD 35 Amp AC -DC3 for SI1"SCR" SILICON CONTROLLED RECTIFIERS!PRV 74 164 2S. PRV 7A 164 2525 .30 .30 .8S 230 1.85 2.25 2.6050 .50 .75 1.00 300 2.00 2.3 2.80<strong>10</strong>0 .90 1.38 1.60 400 2.80 2.90 3.35ISO 1.00 1.65 2.00 900 3.23 3.60 4.00200 1.30 1.90 2.20 600 3.50 4.3S 4.60"Volt-Tab'' 600 att "SCR" speed control Ill VAC$4.50 ... 2 for S6.00TERMS: Money Back O ' Our 2051"TAB" year. S2 order F.0.. N.T.C. Add rhpgnove or .O.D. 25Ye Dep. Prier.nown subject to<strong>11</strong>1-05 Liberty St., N. Y. 6. N. Y.SEND 25c Pnonm Rector 2-6245 for CATALOGELECTROSTATICGENERATORSNOW Models - 150,000250,000 and 400,000 VOLTSPLUS NEW SUB -MINIATUREComplete Kits150,000 VOLT MODEL $27.95 PP.250.000 VOLT MODEL 32.95 PP.Also Plastic Materials for:REPULSION COIL $ 4.00MINIATURE TESLA COIL 21.00SOUPED UP TESLA COIL 24.00WIMSHURST STATIC MACH 20.00TETERO OENEIIATOII KIT 4.25OPAQUE PROJECTOR 4.50WILSON CLOUD CHAMBER 9.50SUB -MIN. OENEI0ATOR ....3.93 4.93VACUUM CHAMBER KIT..9.00 i <strong>11</strong>.59FOREST PRODUCTS, INC.l45 Portland StreetDept. RT51Cambridge, MassachusettsEleetroniosEngineeringD EG R E Eeu can earn tut .t. N. L E. degree at home. College level NOM I:TI)DY courses taught so you ran understand them. Continueour educath.n. earn more In the highly paid electronles Industry.14ailea. computers. transistors. automation, complete electtonies.ver 27.000 graduate. now employed. Resident school availableour l'laica go uampo. I- nnnd.,I I934. Send fur tree catalog.American Institute of Engineering 6 Technology<strong>11</strong>39E West Fullerton ParkwayChicago 14, III.32NEWleieOtll I(l. *ops a <strong>10</strong>00 watts pep to a pair of 572 -B's(T160 -L's) in parallel. It features provisionsfor ALC, a tuned input circuit, and built -inHeathkit HA -14 Kilowatt SSB Linear &HW -12 "Single- Bander" SSB Transceiverantenna changeover relay. Heath's choice offinal tubes means a rugged, shock -resistantamplifier that can be driven by any of thepopular SSB exciter /transmitters of <strong>10</strong>0watts or more. The specs on this linear reveala clean amplifier with third order harmonics30 db down or better at the full<strong>10</strong>00 watts PEP input. Built -in SWR meteraids in maintaining top efficiency after frequencychanges in mobile operation. Smallsize and remotely located power supplymake installation convenient and easy. TheHA -14 mates handily with the Heath HW -12SSB transceiver.Comparing the Heath KW Kompact withother manufacturers' fixed KW linears showsit to stack up well, feature for feature. at afraction of the cost and size. Completedetails and specifications can be obtained bywriting to Heath Company, Dept. 756,Benton Harbor, Michigan 49023.Explorer Short -Wave ReceiverZenith Sales Corporation today announcedthe Explorer, an all -new, highly sensitive5 -band table radio. The set lets the user"eavesdrop" on international short wavebroadcasts from foreign stations, tune domesticbroadcasts of news, sports and entertainment,and obtain around -the -clock areaweather reports and periodic marine weatherRADIO -<strong>TV</strong> EXPERIMENTER


news from U. S. government stations. Thesetalso tunes time signals broadcast bygovernment stations, marine distress signals,ship -to-ship and ship -to-shore channel, andCitizens Band and amateur broadcasts. TheExplorer is ideal for foreign language students,journalists, "armchair travelers," andother short wave radio listeners. Farmers,fruit growers, road builders, fliers and thoseneeding weather information, will find theExplorer useful in obtaining advance noticeof weather dangerous to life or property. Inaddition, boatmen can use the set forweather news as well as a wide range oflistening at home, dockside, or on boatswherever a 1<strong>10</strong> volt electrical outlet ishandy.The Explorer's 5 -band coverage rangesfrom 150 through 400 kilocycles on the longwave band and continuous coverage from500 kilocycles through the AM standardbroadcast band to 30 megacycles in the shortnew Allen typescrewdriversrk faster, easier ... reachere vere .. es won't goZenith Explorer 5 -Band Table <strong>Radio</strong>wave radio spectrum. Other special featuresinclude: a separate electrical bandspread dialwith a bandspread control for superfinesignal selection, especially necessary fortuning short wave and amateur stations;three professional -type slide switches: aReceive- Standby switch to silence the radioyet keep it in operating mode for instantuse while waiting for a particular program;an Automatic Noise Limiter (ANL) switchfor "clipping out" severe static or manmadeelectrical "noise" capable of over- riding thestation signal, and a beat- frequency -oscillator(BFO) switch that permits listening toInternational Morse Code transmissions.The Explorer, model M660A, is availablein a distinctively styled grained walnut colorvinyl- covered cabinet with a metal trim.Manufacturer's suggested retail price is$99.95, and is available at most Zenithdealers.Lfixed handleSCREWDRIVERS<strong>11</strong> hex sizes:.050" to ;"Precision formed,alloy steel bladesShockproof,breakproof,amber plastic(UL) handlesdetachable BLADES8'/ hex sizes:Lifo" to 316Fit all "99" SerieshandlesAvailable singly -as a set of six infree plastic pouch- or in roll kitwith handleXCEL ITE INC. 64 BANK ST., ORCHARD PARK, N. Y.Please send free literature N763.nameaddresscitystate & zoneJOCTOBER -NOVEMBER, <strong>1965</strong>33


Can You Save Money On Parts?Now You Can. Just Write for Edlie'sMONEY -SAVINGCATALOGUEFREEWrite to: EDLIE ELECTRONICS INC.154 Greenwich St., Dept. RT -1, New York 6, N. Y.Listed below are just a few of the many(In ourstock)BARGAINSSTEREO AMPLIFIER, Dual Channel:Contains 3 Output Transformers, 3 -35EH5 and-12AX7 1Tubes and a silicon "Top Hat" rectifieralso 4 volume and tone controls. Operates froma <strong>11</strong>5V AC or DC source. Overall Size51/4"x8 "x2 ". Wt. 3' lb. $695Price complete with tubes and cables..CITIZEN'S BAND Class BReceiver chassis: Transformer powered from a <strong>11</strong>5Volt, 60 cycle source and in a 465 MC frequency.Contains a frequency adjustment from 190.0 to3000 KC. Contains 8 tubes 13- 12AX7, and 1each of 6X4, 0A2, 12AT7, 6AL5, and 6BS7. Also3 band pass filters 1800, 1900 G 3000 CPSI alsoa high frequency tuning section housed in a smallcopper box and containing a 6AK4 Tube, R.F.chokes and silver mica trimmers can be with somemodifications converted to garage dooropener use. Overall size 7 "x7 "x2 ". $695Weight 8lb. PriceT.V. CATHODE RAY TUBE -TESTER:Contains a Simpson 41/2" Rectangular D. C. Microammeter,Basic 0 -<strong>10</strong>0 microamperes housed ina grey finished aluminum cabinet size 6 "x9 "x5"which also contains a <strong>11</strong>5V, 60 cycles plate andfilament transformer, a 3 Gang, S.P. 7 Positionband switch and a variety of variouscomponents completely wired and in $495operating condition. PriceTerms of sale: Full payment or 200% with order.Minimum order 52.EDLIE ELECTRONICS, INC. Dept. RT -1I The Electronic Bargain House i34154 Greenwich St., New York 6, N. Y.BIGCATALOGWorld's "BEST BUYS"in GOV'T. SURPLUSElectronic EquipmentFULL OF TOP QUALITY ITEMS -Transmitters, Receivers, Power Supplies, Inverters, Microphones,Filters, Meters, Cable, Keyers Phones, Antennas,Chokes, Dynamotors, Blowers, Switches, Test Equipment,Headsets, Amplifiers, Converters, Control Bores,Indicators, Handsets, etc., etc. SEND 25C (stamps or coin)for CATALOG and receive SOC CREDIT on first order. AddressDept. 29.FAIR RADIO SALESP.O. Box 1<strong>10</strong>5 LIMA, OHIO 45802Sj"'"OLE THIS ALL BAND BATTERY SHORT WARE RADIO FOP 59 9i,'I ISTFN AROUND THE WORLD-LI' TO 12.UDII MILES AWAY) Ships. Aircraft, VoiceAmerica. Russia. London, Australia, Amateur.Citizens, Poliee- Also LISA Broadcast.4 ytun.n`Vda AH tWHOLE WOR I.0 T AÌ IM DAw iÓ Hi5SEND ONLYh. ch. mo.laSparyma e95 COD ortor P.P. delivery. Compylete Basle Kit acncwn. Irta Broadcast Coll and Plastic Cc,,d you order now! Available only fr neW Rado, Dept. PRE le Kearney, Net^¡ASK MEanotherBy Leo G. SandsRADIO -<strong>TV</strong> EXPERIMENTER brings the know -how of electronics experts to its readers. Ifyou have any questions to ask of this reader -service column, just type it on the back of a4C postal card and send it to "Ask Me Another,RADIO -<strong>TV</strong> EXPERIMENTER, 505 ParkAvenue, New York, New York <strong>10</strong>022. Theexperts will try to answer your questions inthe available space in upcoming issues.Sorry, the experts will be unable to answeryour questions by mail.GarbageI have an early vintage short wave receiverand a special short wave antennawhich has a can, containing a coil or condenser,at each end of the transmission line.What is the correct way to hook it up?-H. E. P., Cleaves, OhioThrow the antenna away and get a Hy-Gain SWL -4, SYL -7, SWO or Consolidated635 or equivalent doublet antenna kit. Theone you have was undoubtedly made longbefore the modern lead -in cables were developed.The cans you refer to are impedancematching transformers which werepopular long ago.Add An S -MeterHow can I add an S -meter to my CB set?-H. C. R., Beloit, Wis.The diagram shows the S -meter circuit usedin the USL Contact 23. The meter is a O -1DC milliammeter connected between thecathode of an IF amplifier and the cathodeRADIO-<strong>TV</strong> EJy'FRTMFNTEB


of the AF power amplifier. When no signalis being received, the voltage drop across Ris at a maximum since the AVC applies'minimum bias to the grid of V 1. The meteris set to read zero by adjusting R3 so thatthe voltage at the positive terminal of themeter will be the same as gt its negativeterminal (equal to the drop across RI).IFAMPVIRI 68<strong>10</strong>0R2-t R3AF POWERV2 AMP150 C<strong>10</strong>0mfWhen a signal is received, the voltage dropacross R I falls off because V I cathode currentis decreased by the AVC voltage whichis now higher. Hence, the voltage at thepositive meter terminal is higher than at thenegative terminal. The meter reading varieswith the voltage drop across R I. The voltagedrop across R3 remains steady. Thevalue of R2 can be varied from the indicatedvalue to calibrate the meter.Bad ImageWhy is it that / receive several local radiostations on other than their assigned frequencieswith my 200 kc to 30 me Brand"X" receiver? One operating on 1590 kc,for example, can be heard at about 670 kcand at other frequencies. I am told this isspurious radiation. Is this true?-E. N., Jackson, Miss.It is unlikely that spurious radiation is thecause if more than one station can be heardat two or more frequencies. It is more likelyto be due to inadequate "image" rejectionin your receiver. If your receiver has a465 -kc IF amplifier, the local oscillator istuned to <strong>11</strong>25 kc when the tuning dial is setto 670 kc. Tt is the 1590 -kc signal gettingthrough to the mixer, beating with the <strong>11</strong>25 -kc local oscillator signal, that causes a 465 -kcIF signal to be produced, just the same aswhen the dial is set to 1590 kc and yourlocal oscillator operates at 2055 kc to producea 465 -kc IF signal, except that the receivedsignal is weaker.Since you are experiencing this with sev-OCTOBER-NOVEMBER, <strong>1965</strong>LEARN ELECTRONICSTHENEWPRACTICALWAYand build yourself this stereo radio!All parts and material supplied FREE withlessons. Amazing, easy new method oflearning by doing, developed by a greatinternational correspondence school. Starttraining now for an important new career.3 . <strong>Radio</strong> ElectronicsTransistorsBasic ElectricitygreatcoursesSEND NOW FOR FREE COLOR BOOKLETINESCOINTERCONTINENTALELECTRONICS SCHOOLIntercontinental Electronics SchoolU.S.A.: P.O. Box 546, Burlington. VermontCanada: 9<strong>10</strong>0 St. Lawronce Blvd., Montreal <strong>11</strong>, Que.hkMEADDRISSCITY30LOOK FOR THEDECEMBER -JANUARYRADIO -<strong>TV</strong>EXPERIMENTERon sale October 26 atnewsstands everywhere.TRANSISTORIZED CONVERTER26 -200 MCReceive signals from 26 to 200 MC (1 MCspread), on broadcast band using car radio,crystal control or tuneable (1 MC spread).KIT $<strong>11</strong>.00 pp. WIRED $20.00 pp.WEBBER LABS 40 -B MORRIS ST. LYNN, MASS.FRFF I NEW CAREER GUIDE TOSuccess in ELECTRONICSIIAutomation, Math - Basic or AdvancedWide choice of new Home Study Programsto prepare you for well paying career oradvancement in present Job. Choose Service,Broadcasting, Industrial, Automation.We assist you in choosing best program.. save time and money. Tuition refundsurety. Since 1931. Write today -CENTRAL TECHNICAL INSTITUTEDept.12<strong>10</strong>5.1644 Wyandotte St. Kansas City. Mo. 64<strong>10</strong>8J35


36ASK MEanotherneral stations, a single, fixed tuned wave trapat the antenna won't do. Try shortening yourantenna in order to reduce pick -up of thestrong broadcast signals. Your set has anantenna trimmer with which you should heable to attenuate the unwanted image signaland accentuate signals at the frequency towhich the dial is tuned. Image interferenceis less troubesome with more expensive receiverswith more RF selectivity (ahead ofthe mixer).Ham ExamsWhat source does the FCC use when preparinglicense exams? I am trying for thethird time to pass the test for a general classham license.-R. G., Waco, TexasFCC engineers undoubtedly make up thetest questions. All they want to know is ifyou understand basic theory, basic laws andamateur practice. There are several goodbooks on the subject. If you understand whatis in any of these books you'll pass the testeasily. Most electronic part supply houses listthese books in their catalog. A better bet isto visit your local Ham supplier and thumbthrough the books he has to offer.Get Off the Air, Quick!Can 1 build my own FM wireless microphonefor use in the 88 -<strong>10</strong>8 mc. FM broadcastband? I understand that the F.C.C.allows use of wireless microphones in thisband.-H. B. H., San Francisco, Calif.Use of wireless microphones in the 88-<strong>10</strong>8 mc. band is now permitted. However,homemade transmitters cannot be used. Theymust be "type approved" by the F.C.C.which requires costly and elaborate procedures.CQ FCCWhere shall I apply for a "ham" radiolicense? What are the requirements andwhere can I get more information?-L. M. Independence, Ky.Several books about amateur radio licenseexaminations are available at radio partsstores and mail order houses. You can getan amateur radio license guide free fromEICO Electronic Instrument Co.. Inc., Flushing,N. Y. <strong>11</strong>352. The code test and writtenexamination for a novice license may be administeredby a licensed ham. It is not necessaryto go to an FCC office to take the test.You can get an amateur radio operator licenseapplication form by writing to theFederal Communications Commission,Washington, D. C. 20554.Instant <strong>TV</strong>How can I modify my <strong>TV</strong> set so it willturn on instantly like those advertised on <strong>TV</strong>commercials?-V. G., Snohomish, Wash.If your set has a power transformer andits tube heaters are not connected in a seriesstring. you can add a switch (S2) in thesecondary circuit of the low voltage powersupply as shown at X in the diagram. Themain switch (S1) is left turned on. Theother switch (S) is turned on to make theset operative. But, get a schematic of yourset and see if this circuit will work.POWERTRANSFORMERBREAKCIRCUIT HERETO TUBEHEATERSFixing Up An Old TimerMy old radio has a magnetic speaker andmy parents object to the noise. How can Iconnect an earphone jack so I can plug in apair of phones and cut out the speaker?-A. W., St. Peter, Minn.It must be a very old radio since the electro-dynamic speaker superseded the magnetictypes more than 35 years ago. This kind ofset does not usually have an output transformerbut has instead a choke (L) and acapacitor (C) as shown in the diagram tokeep the B+ out of the speaker.Mount a Mallory Type 5 jack (1) on the(Continued on page 40)RADIO -<strong>TV</strong> EXPERIMENTER


SOMEONE SHOULD DEVELOP AN EASY WAYTO LEARN ELECTRONICS AT HOMERCA INSTITUTES DID!iRCA introduces new CAREER PROGRAMS- beginning with the student - proved" AUTOTEXT" Programmed InstructionMethod -the faster, easier way to learn.You start to learn the field of your choiceimmediately. No previous training or experienceneeded.Pick the career of your choice -and RCASEPARATE COURSESIn addition, in order to meet specificneeds, RCA Institutes offers a wide varietyof separate courses which may be takenindependently of the above Career Programs,on all subjects from ElectronicsFundamentals to Computer Programming.Complete information about these courseswill be sent with your other materials.CHOOSE A CAREER PROGRAM NOWyour first step to the job of your choice!Television ServicingTelecommunicationsFCC License PreparationAutomation ElectronicsAutomatic ControlsDigital TechniquesIndustrial ElectronicsNuclear InstrumentationSolid State ElectronicsElectronics DraftingInstitutes will do the rest! RCA's new, rev -olutionary "Career Programs" help you godirectly to the career you want! You wasteno time learning things you'll never useRCA INSTITUTES BONUS EXTRASon your job! Each Career Program is designed to get you into the kind of job youOnly RCA Institutes offers you a Liberalwant in the fastest, easiest possible way!Tuition Plan, one of the most economicalways to learn. Plus, you get top qualityequipment in all kits furnished to you withyour courses -yours to keep and use onthe lob. And now, RCA's NEW PROGRAMMED ELECTRONIC BREADBOARDGIVES YOU LIMITLESS EXPERIMENTTION - scientific laboratory proceduresright in your own home! You build a workingsignal generator. AM Receiver, Multi -meter, Oscilloscope, and other valuableequipment - ALL AS A PART OF YOURCOURSE! Get the facts today!Classroom Training Also Available. Dayand Evening Classes are available to youin New York City at RCA Institutes ResidentSchool. You may be admitted withoutany previous technical training: prepcourses are available if you haven't completedhigh school. Coeducational classesstart four times a year.SEND ATTACHED POSTCARD TOOAY FORCOMPLETE INFORMATION. NO OBLIGA-TION. NO SALESMAN WILL CALL. FREEBOOK INCLUDED. CHECK HOME STUDYOR CLASSROOM TRAINING.RCA INSTITUTES, INC., Dept <strong>11</strong>1 OSA Service of the <strong>Radio</strong> Corporation of America350 West 4th St., New York City <strong>10</strong>014The Most Trusted Name in ElectronicsOCTOBER -NOVEMBER, <strong>1965</strong>39


New MagazinesFor YourReferenceLibrary!ASK MEanotherntt ;,.L,RADIO -<strong>TV</strong> REPAIRS, Fall -Winter Edition, (#-759).75(.Of special interest: buildinga 21 -inch color <strong>TV</strong>.Complete story on thekit starts on page 22.HOW TO GET A BETTERJOB,Fall- Winter Edition,( #758). 75(."How To Get A Job InThe Space Program"describes requirements.earnings and other importantinformation onthe nation's largest employer!Buy your copies of RADIO -<strong>TV</strong>REPAIRS and HOW TO GET ABETTER JOB today at newsstandseverywhere. Or writeDavis Publications, 505 ParkAvenue, New York, N. Y. <strong>10</strong>022,adding 25 per copy to coverpostage and handling. Be sureto specify the issue you want.CB+BREAKCIRCUITHERESPEAKERTERMINALS<strong>11</strong>chassis or cabinet, break the circuit at X inthe diagram and add R, a <strong>10</strong>.000 ohm potentiometer.all connected as shown. Whenthe phone plug is inserted in the jack, its4 -5 and 2 -3 contacts open. disconnecting thespeaker. Its 5 -6 contacts connect the audiooutput to the ungrounded headphone lead(tip of phone plug) through R which is connectedas a series rheostat and serves as aheadphone volume control.Kicking the P out of PNPCan a transformer he used as a diode?-A. H., Aberdeen. Wash.A transistor is a "triode" which, like atriode tube, can be connected as a diode asshown in the diagram. At the left a PNPtransistor has its hase and collector connectedtogether. When the collector is madenegative with respect to the emitter, the baseis forward -biased. At the right the circuitfor an NPN transistor is the same exceptthat the collector is made positive with respectto the emitter. The hase, here too, isforward -biased. The forward voltage drop(in the direction of conduction) is muchlower than for a conventional diode.PNP TRANSISTOREQUAL T0:+ +NPN TRANSISTOREQUAL TO:inRADIO -<strong>TV</strong> EXPERIMENTER


Quiet, Please!How can 1 locate noisy vacuum tubeswhen all tubes check out OK on a tube tester?-E. R., Mukilteo, Wash.Connect an RF signal generator to the antennaand ground terminals of the receiver.If the set has a loop antenna or loop stick,connect the signal generator output to thegrid of the first tube through a small capacitor(<strong>10</strong>-<strong>10</strong>0 pf). Set the signal generator andreceiver to the same frequency and turn upthe signal generator output, with the RF signalunmodulated. Now, just tap the tubesand other components with the eraser on theend of a pencil and you will quickly detectthe noisy ones.Red, White and Blue SmokeThe screen bypass resistor in my recordplayer blew and no circuit diagram was furnished.What value of replacement should1 use?-M. M., Westfield, N. J.The screen resistor probably burned outas a result of shorting of the screen bypasscapacitor (condenser). Unsolder both andtake them to a radio parts store and buy re-placements. The resistor should be color -coded to indicate its resistance. If the colorcode has been burned off, try various valuesfrom 50,000 ohms to 500,000 ohms untilthe sound is cleanest. Use an 0.1 mf. tubularrated at 200 volts or higher as the replacementbypass capacitor. Its value isn't critical.TD -FM <strong>Radio</strong> Is No HelpHow can 1 modify the TD -FM radio(June -July 1964 issue) for the 150 -274 merange?-G. C. M., Jacksonville, Fla. &F. S., Wallington, N. J.While it is possible to change the coils toalter the frequency range, you probablywould not be pleased with the results. The150 -174 me mobile radio band channels arespaced only 30 kc apart and the FM signalsdeviate only ± -5 kc. In the FM broadcastOCTOBER -NOVEMBER, <strong>1965</strong>GIANT NEW CATALOGpr tom'f<strong>10</strong>0's OF BIG P GESCRAMMED WITH SAVINGSDept. ST, <strong>10</strong>12 McGee, Kansas City,Mo. 64<strong>10</strong>6'Lush one FREE 1966 13 -A Catalog.NameAddressCityPlease be sure to show your Zip No..._ StateÌ FREEKeep up with your favoriteinterest by havingRADIO -<strong>TV</strong>EXPERIMENTERsent to your home. It's easy-just mail the coupon.1 year: $4.r 1<strong>Radio</strong> -<strong>TV</strong> <strong>Experimenter</strong> 756505 Park Ave., N. Y., N. Y. <strong>10</strong>022Please start my subscription today.I enclose $4. Bill me.ilallleaddresscitystatezip axle41


ELECTRICITYBYTHEYARD!ASK MEanothernIDband, the channels are 200 kc apart and thesignals deviate +75 kc. Even in the 2 -meteramateur band (144 -148 mc) the signals usuallydeviate ±-15 kc. Extremely good selectivityis required to separate the signals inthe 150 -174 mc. hand and an FM discriminatoris required which will provide adequateaudio recovery. Only a multi -stage super -hetrodyne receiver with very sharp selectivitywill provide satisfaction.Coax Lead -InHow can 1 concert my end -fed antennaradio receiver so 1 can use a dipole antenna?-N. S., Waterford, Wis.It may look like a tape recorder,but it's actually an amazing drytape battery that provides an entirelynew source of electrical pow-er. One side of the tape is coatedwith an electro- chemical fuel, theother side with an oxidizer. Electricityis drawn off instantly whenthe tape passes between a set ofcurrent collectors. Read all aboutthis revolutionary battery that pro-vides electricity by the yard, when-ever and wherever it's needed, intheNOVEMBERScience &Mechanicson sale September 28thHow can 1 connect a dipole to a receiverwith only one antenna terminal and oneground terminal?-J. C., Decatur, Ga.Use 75 -ohm coaxial cable, such as RG-1 1 /U, as the transmission line as shown inthe diagram. Connect the center conductorof the coax to the antenna terminal and theshield braid to the ground terminal. If thereis no ground terminal, connect the shieldto the chassis -hut not if it is an AC /DC set.INNERCONDUCTORCOAXIALCABLELong Wire Is BestINSULATORSs- SHIELDINNERCONDUCTORRECEIVER1 have built an antenna for the /9 and 25-meter hands. When 1 connect it to the receiver.I get a bubbling sound. How can 1eliminate it? Also, can you give me a planfor an all -hand antenna?-K. D., Wallingford, Conn.I can't advise you on the bubbling sound42RADIO-<strong>TV</strong> EXPERIMENTER


without hearing it? Shep Fields isn't on theair any more. The most universally used all -band antenna is a single wire from 50 to <strong>10</strong>0feet long. It won't suffer so badly from directionaleffects as a doublet and is less frequencysensitive.Dropping Pick Uo1 have a home -made intercom using aLafayette PK -544 amplifier (5- transistor,push -pull output). 1 hear a radio stationon 1520 kc, sometimes very strong. Whatcan 1 do to correct this problem?-F. S., Portland, Ore.FULL PLANS AND MATERIALLISTS ON <strong>10</strong> BOATS!nr t.1w N<strong>10</strong>.<strong>11</strong>. . w %ea Mti.. IS II.t.t, ,,,,,,. It WON let~' +.v- uW t' t ,pt St IM tam Mb. wes.MCI 1t0672 oEE41-<strong>11</strong>1/<strong>11</strong><strong>11</strong>1}6YOtEAMU'Pick up of signals from nearby broadcastingstaitons is a common problem. Thesignal. picked up by the speaker leads. %henthe speaker functions as a microphone, issometimes demodulated by the first stage ofthe amplifier acting as a detector. Trygrounding the common side of the speakerlines. Or connect a stop -filter (wave trap)in series with the amplifier input as shownt74,1e5a1,<strong>11</strong> artcwaoTOSWITCHINGCIRCUITSin the diagram. Use the secondary of ashielded RF transformer as the coil and anadjustable mica trimmer capacitor as thefilter. Tune it carefully to 1520 kc, thepoint at which the radio signal is at a minimumor eliminated.Noisy DirtWhen 1 turn the volume control on myradio. 1 hear a scratchy noise. Should 1 replacethe volume control?-! .R., Ashland, Va.Often, cleaning the volume control willmake it quiet. Get some volume controlcleaning fluid and drop some of it with an eyedropper into any openings you can find onthe volume control, including the shaft bushing.Twirl the volume control shaft rapidl .If the cure does not last more than a fewdays, install a new volume control. But, besure to get an equivalent replacement. Theymay look alike and have the same resistance.but they are not all the same.OCTOBER -NOVEMBER, <strong>1965</strong>JUST OUT!BoatCraft"Boat Builder's Issue ". with plans,plans and more plans for all sizesand budgets.The easy- to- follow instructionsare complete and accurate . . . soput your hands to work buildingboating fun!BoatCraft"Boat Builder's Issue" is now onsale at all newsstands. Only $1.Or write the publisher and enclose$1.25 for postage and handling.BOATCRAFT, Dept. 757505 Park AvenueNew York, N. Y. <strong>10</strong>022i:;


LISTEN..r._ ",,.. rr-..__.,_.....sP-!r--1*-a.--- ^..a":äYz.. ,..r:-r:r :. :..x.-r. ""*.e7,. ..n:ü.. _:_:tLr-.::.:, .3=i-- _ttmlY: m tarnrsscY:.id._eY..ß --ïsY--i-3-ow."_4_0 4:4M. TM/ YIN VIA<strong>11</strong>.<strong>11</strong>1.To The Exciting World Of Shortwave With ThisNew Deluxe Heathkit <strong>Radio</strong>... ` $84.95!COMPARE IT TO OTHER SETS COSTING $150 AND MORE!Compare feature against feature. Features like the 5bands that cover the 180 -420 kc aeronautical and radionavigation range, popular 550 -1620 kc AM, and the2 -30 me shortwave spectrum. The 6 -tube, 6 -diode super -het circuit with 2 silicon diode rectifiers. The tuned RFstage that provides added amplification and image rejection.Or the half- lattice crystal filter for truly sharpselectivity (you won't find this feature on any unit sellingfor under $ 150).IF YOU'RE A SEASONED SWL ... you'll appreciate theseparate product detector for efficient SSB and CWlistening, plus the diode detector for AM. You'll alsolike the convenience of the switchable BFO control.Simply switch to upper sideband (USB) or lower side -band (LSB) position, and adjust the electrical band -spread tuning control ... eliminates "trial and error"SSB tuning. Even includes a Free Shortwave AntennaKit.HAVE AMBITIONS TOWARDS HAM RADIO? Then developyour keying proficiency with the code practice monitor.Just connect your key to the terminals on the back, tunein a weak AM station, turn on the BFO, and hear yourrLFREECATALOG!Describes this and over 250 otherHeathklts. Save up to 50% by buildingthem yourself. Use coupon andsend for your FREE copy!Le' ine through the built -in 4" x 6" PM speaker.COMPLETE CONTROLS FOR FULL COMMAND OF ALLFUNCTIONS. There are separate level controls for audiovolume and RF gain, an antenna trimmer for peakreception, band selector switch, bandspread tuning,mode selector, main tuning, automatic noise limiter, andan automatic volume control to eliminate blasting orfading while tuning. In addition, there's a built -in relativesignal strength meter, lighted slide -rule dial, a standardjack for headphones or external speaker.HOW CAN WE OFFER THIS UNIT AT AN UNMATCHEDLOW PRICE? Typical Heath -Engi -nuity of course. Butwe've gone a step further to add extra savings. With theGR -54 you build and align the front -end tuner ... withor without instruments ... and get factory -built results!Thanks to a unique printed circuit bandswitch assembly,you simply align the coils using the signal strength meterfor adjustment readings. Entire construction time isaround 12 -15 hours. Boasts sleek low -boy styling andcharcoal gray metal cabinet that measures 141/4" W x6 -5/16" H x <strong>10</strong>- 15/16" D. Wouldn't it make an attractiveaddition to your living room?KIT GR -54, 25HEATH COMPANY, Dept. 19 -<strong>10</strong>, Benton Harbor, Michigan 49023In Canada: Daystrom, Ltd., Cooksville, OntarioEnclosed is $84.95 plus shipping. Please send model GR -54 Shortwave <strong>Radio</strong>.Please send FREE catalog.NameAddressCityStatePrices and specifications subject to change without notice.lbsZip$84.95CL -2<strong>10</strong>44RADIO -<strong>TV</strong> EXPERIMENTER


South PoleBy Are Airy RobinpenTHF. BORING COMPANYA 21- mile -long antennalaid in the Antarctic snowhelps us collect dataon radio frequencies down to1.<strong>10</strong>0 cycles per second!Inside a makeshift shelter of blanketson a 9,000- foot -high Antarctic plateau, threeBoeing men in heavy parkas huddledover a tape recorder playing Julie Andrewsrecording of "I've Grown Accustomed to Your Face."Waves of music pulsated through thewhiteout of the bitter Antarctic summer, skimmedacross endless ice wastes, rose and fellover crusty hills of snow. Twelve miles away,the music came booming in to engineersin the staid scientific Stanford Universityfield laboratory at Byrd Station.Entertainment? No. This strange two -part ac: was a scientific experiment similar toS. F. B. Morse's first telegraphic message"What hath God wrought ?" It was the first testoperation of a 21- mile -long dipole antennadesigned to collect scientific data at extremelylow frequencies near one kilocycle.Other antennas using existingOCTOBER-NOVEMBER, <strong>1965</strong>Continued on next pagei5


Distances across the vast and eerie Antarcticwastes were measured using electronicsurvey equipment. Protected by warm parkaand beard, Boeing man adjusts the equipmentwhich was mounted on snow vehicle to getit above the snow- whipped ground surface.As shown at the top, the men relaxed by conqueringa mountain of snow near camp.power transmission lines have dipped intothe one -kilocycle region, but none of themwas built specifically to study extremely lowfrequencies and their scientific applicationson a sustained basis.The Boeing men used no broadcastingequipment to transmit Miss Andrews' sentimentalsong. They fed the music directlyfrom the tape recorder to the dipole antennain the same way it would be fed to anauxiliary speaker.Music played no part in most of the antenna-experiment work. The bulk of thetesting involved 8,000,000 -watt narrow -bandmultiple pulses, mere microseconds long,which were directed to stations as far northas Great Whale River on Hudson's Bay. Areport of reception is being compiled.The Dipole. Success of the whole venturehinged on careful installation of a long -wiredipole antenna excited from terminals at itscenter, with two equal -length arms stretchingin opposite directions on a straight line acrossthe Antarctic plain from the makeshift centralshack. For three months, Boeing engineersRobert Tighe, Ted Johnson and ArtGuy had unreeled big spools of 3/4-inch polyethylenecable over the frozen surface in1,000 -foot segments, carefully surveying andaligning it as they went.Their efforts paid handsome dividends:the antenna actually performed better thanexpected. Considerable new data wasgathered, especially below five kilocycles.The Electronics of It. Arriving in Antarctica,determination of the dielectric propertiesof the ice and snow was first on the46RADIO -<strong>TV</strong> EXPERIMENTER


Boeing Company antenna expertsT. L. Johnson, Robert Tighe, and ArthurGuy study the electrical impulsegenerator they designed for subsurfaceantenna experiments in theAntarctic. One of the Boeing team,shown below, has his turn at themorn;ng chore -digging antennacable and supplies out of snowbanksconstantly formed by drifting snow.agenda. Four- electrode ccnductivity measurementswere made over a frequency rangeof <strong>10</strong>0 cps to <strong>10</strong>0 kc. A 3 -inch diametercoaxial capacitor was used to measure thedielectric constant and loss factor of smallsamples of snow near the surface. The capacitybetween two small diameter cylinderswas also measured. These measurementsincluded self- impedance versus frequency,current distributions, and relative efficiencymeasurements on dipoles having lengths of<strong>10</strong>00, 2000, 4000, 8000 and 12,000 feet.At the same time mutual impedances betweenparallel dipoles were measured. In themutual impedance measurements the dipolespacings were changed four times for eachdipole length. The lengths used were <strong>10</strong>00,2000, 4000 and 6000 feet. Spacings were differentfor each length and varied from 0.75meters to 500 meters. Upon completion ofthe mutual coupling tests, a single dipole12,000 feet long was installed.The next few days were used for completinga series of tests on <strong>10</strong>00 and 2000foot dipoles made up of: 1) the core ofRG -58 coax, about t/e the diameter of thelarger RG -17 cable, and 2) the uninsulatedcenter conductor of RG -17, about the sizeof No. 5 wire. The tests included self -impedance,current distributions, and mutualcoupling measurements.The dipole antenna then was extended in2000 -foot increments from 12,000 to 24,000feet. At each increment the dipole resonancewas determined and the driving point impedanceat resonance was measured. Withthe length of 24,000 feet (f,, = 7.5 kc), aOCTOBER -NOVEMBER, <strong>1965</strong>47


EIGHTSSTATIONRESERCH SHIP "ELTANIN'IN SO. PACIFIC (400m)N. OF NEW ZEALANDIn Antarctic desolation men are men; Sovietscientist, right, "drops in" for hot coffee.Map of Antarctica shows locations of VLF receiverstations for the propagation tests.detailed series of measuremerts was completed.Tests included self -impedance overa very wide frequency range, current distributions,relative efficiency measurements bythe receiving technique, near zone cw transmission,and spectrum measurements of thedipole radiation with high intensity <strong>10</strong> cpssquare wave inputs (pulse discharges).Again the antenna was increased in length,this time in increments of 4000 feet until thelength reached 50,000 feet. The resonantfrequency and driving point impedance wereagain measured as a function of length. Themore detailed measurements outlined previouslywere repeated for the new length of56,000 feet -a resonant frequency of 2800cps.Finally, the measurement increments wereincreased to 8000 feet and by the last weekin January, <strong>1965</strong> the goal of 1<strong>10</strong>,000 feet,or 20.8 miles, was achieved. This dipolewas resonant at 1<strong>10</strong>0 cps.Supplies and equipment were unloaded froma ski -equipped C -130 right in front of the camp.48RwIO-<strong>TV</strong> FaXEnWExTEa


'OANTENNA0. CAMPtrueorthYLONGDIPOLEOLD BYRDSTATION\4ppa Hp60.12\ FS`.r1=2NEW BYRDSTATIONSTANFORDVLF RECEIVER©/Sketch of the Byrd Stationarea shows the locationand orientationof the dipole along themagnetic meridian 30°east of true north.IfPropagation Tests. By opening or closingthe dipole at appropriate points theresonant frequency could be set at nominalvalues of 1.1, 2, 3, 4, 6, 9, 15 and 30 kc.Transmissions were made using each of thesefrequencies at various times. The actual testsinvolved transmitting both pulses and CW atselected times. A number of receiving locationswere in operation, including those atByrd, South Pole, Eights Station, Scott Baseand the ship Eltanin in the South Pacific.Data were recorded on magnetic tape.Things to Come. The big Antarctic antennawill continue to be a versatile basicresearch tool for many years. "The door isnow open to new ionospheric, propagationand geophysical research studies," said Boeingengineer Ted Johnson. "For example,we now can experiment with long- distancepoint -to-point radio communication outsidethe ionosphere via whistler modes. We canstudy ways of improving conventional modesof communication using propagation underthe ionosphere. We can do research on solarflares and perhaps eventually give predictionsof intense solar storms that disrupt the earth'smagnetic field. Also, we can study the electricalproperties of materials deep under theAntarctic icecap."Dollars and Sense. The lower the frequency,the more stable the signal and theless likely it is to fade out during researchand communication experiments. Big antennasystems reaching as low as 14 kilocyclesare in operation in Maine and atWashington State's Jim Creek station, but thecost of building each of these stations wasOCTOBER -NOVEMBER, <strong>1965</strong>well over the fifty -million dollar mark."For $ 1 2,000 worth of wire, we were ableto build a bigger. more efficient researchantenna which will operate at lower frequenciesthan any now in existence," saidArt Guy. "It was a remarkably successfulventure."The antenna project is being financed bya National Science Foundation grant administeredby the University of Washington,with major assistance from Boeing in manpowerand equipment. Guy is on a nine -month doctoral leave from Boeing to theUniversity and is doing some of the researchfor his doctoral thesis. Tighe and Johnsonare Aero -Space Division employees.Antenna Site. Antarctica was picked forthe antenna installation because it has high,unpopulated plateaus on which wire can belaid in straight lines for miles, and a frigidcoating which prevents signal loss. Next tofree space, ice is the best, most abundantinsulating material naturally available onearth. Generally the colder the ice, the lowerthe signal loss.The antenna location was about 12 milesfrom Byrd Station, roughly 450 miles fromthe coast and 700 miles from the South Pole.The antenna was oriented along the magneticmeridian 30 degrees east of true north.At the antenna site, summer temperaturesfluctuated between 26 degrees above and 26below zero. No sooner had the Boeing menlocated their campsite and erected their smallshelter than a three -day blizzard hit, buryingtheir equipment in <strong>10</strong> to 20 inches of snow.(Continued on page 136)49


WorkbenchWeegeeBoardbArt Tr.aufierYour lab workbench may be equipped with everything in test equipment froman Annunciation relay to a Z -angle meter, but do you have a Ouija board?This innocent looking "Weegee" board isactually a low -voltage power supply fortransistor experiments, a continuity checker,a bulb tester, an emergency flashlight, a celltester, a code practice blinker, and anythingelse for which you can put it to use. (Incidentally,the correct spelling for "Weegee" is"Ouija ", but how many people know how topronounce it ?)Start With The Chassis. As shown inthe photographs, the parts are mounted andwired on a '/z -inch plywood board about 5inches by 72 inches. The three D flashlightcells, BI, B2, and B3, can be mounted inKeystone battery holders, as shown, orsimply soldered in series and strapped ontothe board. The bulb tester is simply twostrips of metal, brass, copper, or tin, about3/4-inch wide and 3/4 -inch long, soldered tothe Fahnestock clips, as shown. The left -hand strip is bent up a little, as shown in thedetail photograph.The continuity tester is simply a miniaturelight bulb, II, screw base type, mountedin a socket and wired in series with the 41/2-volt power supply. One socket lug can besoldered directly to the right -hand Fahnestockclip, as shown.The flashlight cell tester is simply a %-inch by 6 -inch springy metal band bent into50RADIO -<strong>TV</strong> EXPERIMENTER


a U, and screw -fastened onto the board. A1.2 -volt flashlight bulb, I2 is soldered into ahole near one end of the U, and a brass tackis soldered near the other end. Make the Ufrom any springy metal that's easy to solder.Bend the U so it can be spread or compressedto accommodate any flashlight cell from pen -lite to D size. All the circuits are shownin the schematic diagram.It's important to note that, since we aredealing with low voltage, it is advisable thatall connections be soldered, where possible.Some Uses. For transistor experiments,or other low voltage experiments, the fourleft -hand Fahnestock clips will give you 41/2volts in <strong>11</strong>/2-volt steps.Any flashlight bulb, or radio dial bulb, canbe tested as shown. Even a No. 47 radio dialbulb will glow faintly if the filament is notopen. Series strung Christmas tree bulbs canbe tested by twisting them into the bulbsocket and shorting the continuity clips.Fuses, low- resistance coils, etc., can becontinuity- tested by connecting a pair of testprods to the continuity clips. Variable capacitorscan be tested for shorts: I1 will lightif the plates in the capacitor are shorted.Connect a telegraph transmitting key tothe continuity clips and you have a "blinker"code practice set.Connect a wire jumper across the continuityclips and you have an emergencyflashlight.Any flashlight cell, from penlite to "D ",can be tested as shown. 12 lights brightly ifthe cell is in good shape, but glows dimly,or fades out, if the cell is weak.We will leave it to you to continue listingother uses for this board.Bulb is quickly tested using thetest prongs attached to thefirst two Fahnestock clips. The1.5 volts is enough to checkfor an open filament. Flashlightcells are checked in a flashin the fabricated bulb holder andstrip. Brightly lighted ordimly lit bulb indicates strength.PARTS LISTB1, B2, B3 -D size flashlight cellsI1 -4.9 -volt, screw -base miniature lamp(GE 407 or equiv.)12-1.2-volt, screw -base miniature lamp(GE <strong>11</strong>2 or equiv.)3- Battery holders (Keystone No. 175 or equiv.)1- Miniature screw socket for <strong>11</strong> (Leecraft 5 -06or equiv.)6 -3/4" x 5/16" Fahnestock clips (Mueller No.<strong>10</strong> or equiv.)Misc. -Scrap metal for cell and bulb testers;plywood for baseboard, nominally 5" x 7' x1/2 "; round head wood screws; hookup wire;brass tack; washers; solder; etc.Estimated cost: 52.00Estimated construction time: 1hourBI B2 831.5V 1.5V 1.5V`+.0V .1.5V e3V e4.5VBULBTESTCONTINUITYTESTCELLTESTSimplicity of the Weegee Board schematicdiagram belies its tremendous usefulness ingiving you a quick answer to your "goodor bad ?" electrical questions in the shop.OCTOBER-NOVEMBER, <strong>1965</strong> 51


ELE [TB UXICSll TNEOÍVGEIT1KOxygen tank patientsneed constant attention;but doctors and nurseshave other patients too,so electronics takes overto keep tabs on the tankA wide variety of illnesses can be treatedin a new oxygen tank that resembles a smallsubmarine more so than the high pressuremedical oxygen chamber that it is in reality.Recently put into use at New York's MountSinai Hospital, the 37 -ton tank and its complexof electronic equipment forces up to 30times as much oxygen as normal into a patient'sblood. Up to ten patients can betreated in the tank's three rooms, one ofwhich is equipped as an operating roomwhere surgery has been performed.The tank, 45 feet long and 12 feet indiameter, is a boon to patients suffering froma common and very dangerous ailment -oxygen starvation. Such starvation occurs,explains Dr. Julius H. Jacobson, II, the facility'sdirector, when loss of blood or astoppage, blockage, or other circulatory difficultyin the blood vessels prevents the redblood cells from delivering their vital allowanceof oxygen to the body's tissues. Theresult is the death of the oxygen deprivedcells. The deprived areas may be a foot, thebrain, or the heart. But by saturating thepatient with oxygen, he points out, it appearspossible to maintain the tissues in a healthystate, even without red blood cells in the circulation,for several hours. This also meansthat the tank is useful in treating stroke andheart attack patients. In these cases, hyper -baric ( high pressure) oxygen therapy adds amargin of safety.Inside the tank, patients breathe <strong>10</strong>0 percent pure oxygen at a pressure four timesthat of sea level. The tank is also being usedin treating patients with poor blood circulationin their legs or arms. If permitted to gountreated, the condition would result in gangrene,which would necessitate amputationof the limb.Working inside the tank is a dangerous occupationso complex control boards outsideelectronically display all the conditions insidethe tank both environmental and physiological.The patient's lijebeat is monitoredand closed circuit <strong>TV</strong> even permitsvisual monitoring.52RADIO -<strong>TV</strong> EXPERIMENTER


The control board outsideprovides communication withpersonnel in the tank viasound powered telephones.Note the three televisionscreens in the console;they monitor activity ineach of the three roomswithin the oxygen chamberTelevision receiver screen on console is oneof three that monitors activity in the threerooms or chambers of oxygen tank facility.Here, os in any form of technical communication,a picture is worth a thousand words,or in this casliait is worth valuable timethat might óe0`5st in diagnosing meter readingswhen a picture might reveal the natureof the situation within the oxygen chamber.A technician adjusts the graphdisplayed on the console oscilloscopeThe console controlsparameters that must be adjustablefor successful hyperbaricoxygen therapy. This medicaltechnique has proved extremelyuseful in treating stroke andheart attack patients, curing gasgongrene infections, carbon mon-oxide and other poisonings, and.n treating patients with poorblood circulation in body's limbs.The physiological monitoringconsole keeps tabs onthe patient being treatedfor any one of many variousphysical malfunctions Thereadings are always at handand make quick action possiblein event of emergency.While relaxing at home you very often viewa drama of life and death on your <strong>TV</strong> screen;these doctors are also witnessing a drama oflife and death on a screen but they're notrelaxed about it and their concern meansthat, more often than not, death will lose.Patient's heart beat is taped usingrecorders on the physiologicalmonitoring console. Inside thetank, the patient is breathing <strong>10</strong>0%oxygen under high pressure toincrease the heart's capability,where the organ is damaged orblood is low in red corpuscles.OCTOBER- NOVEMBER, <strong>1965</strong>53


SCR SlavePhotoflashBy Clarence JonesEver look at a professional photographer'sflash shots and wonder, "what's he got that Ihaven't ?" Probably, a slave -an extensionflashgun.For seven dollars. you can build a wirelessslave photoflash that outperforms anythingnow on the market. It's small enough to slipinto a shirt pocket and can be put togetherin about an hour.Professional photographers never use oneflashgun when they can take the time andtrouble to rig more. Pictures lighted by a singlebulb near the camera are harsh and unreal.Aunt Brawnhilda, close to the bulb,comes out flat and pasty. Uncle Baskervilleis that shadow lurking behind her.Auxiliary flash units are rarely found inamateur gadget bags. The flashguns rarelyhave an outlet for an extension flash that isFill in unwanted shadows in yourphotographs Nish a second flashunit that's instantly activated bythe light from your camera flashconnected to the main flash by a twoconductorwire. And stringing a wire acrossthe room ties down the photographer anyway.Most wireless units -the true slaves -are strobe lights. Rather sophisticated, bulkypieces of equipment with price tags to match.Light Activation. This wireless slave isessentially a battery- capacitor flashgun, triggeredby a GE -X2 silicon -controlled rectifier.SCR1 functions as a light- activated switchfor the circuit. (Sec the schematic diagram.)It becomes a conductor the instant the flashbulbnear the camera ignites. There's no lagto amplify the current. The slave flashbulbfires simultaneously with the main flash, inperfect synchronization at speeds up to1/27.0th of a second. As an example of thisperformance, the closest competition in thephoto stores is a unit not recommended forspeeds faster than 1%25 of a second and it listsfor $19.95.Everything in the parts list for constructingthis home -brew is available at most electronicsand camera stores. The only odd -ballis the metal Sucrets throat lozenge boxwhich makes an ideal case for the unit. Butany small metal or plastic box with a hingedlid that you can find will work fine.Start By Drilling. Drill seven holes inthe hinged box as follows: (See photo.)1. :No-in. centered in the left end panel.This will hold SCR1. Drill low enough toclear the lid rim when it's closed.2. Ma -in. at left center of the lid. Leadwires to the flashbulb socket will comethrough here.3. and 3A. is -in. through the center ofboth lid and case bottom, for the socketmounting stove bolt.4. .Y16-in. at right center of bottom, fortripod socket adapter.S. 5í6-in. at right front panel, for tripodsocket adapter.6. ' 4 -in. at left center of right end panelfor switch Si.Now ream the i46-in. hole (3) in the lidto Vs -in. so it will close more easily when thestove bolt is installed. Smooth all holes andmake sure components will fit.54RADIO -<strong>TV</strong> EXPERIMENTER


Refer to the text for dimensions of theholes drilled in the hinged metal box shownabove. After drilling, deburr the holes and,after preliminary wiring, mount and finishwiring the components as shown at the right.Screw the tripod socket adapters into holes4 and 5, fastening on the inside of the casewith . % -in. flat hex nuts. Fit the stove bolt upthrough hole 3 and secure it with a correspondingnut. Install switch SI in hole 6.Wire As You Go Along. For all wiring,use sleeving or insulated hookup wire. Thiswill prevent a short circuit if the unit getsdropped hard enough to dislocate a component.Solder resistor R1 between the gate andcathode leads of SCR 1. Use a heat sink toprevent overheating of both parts on analligator clip between the soldering point andthe component which will act to drain off theheat.Install SCR1 in hole 1. Use a thin strip ofplastic friction tape to hold it flush againstthe left end panel. Dress the gate and cathodeleads flat against the bottom of the case.Binding posts for the contacts of a 22.5 -volt "B" battery are made by force -threading,ho -in. machine screws into the battery poles.Thread a nut onto each screw before threadingthe screw into the battery pole. Be carefulnot to damage the battery. Place thebattery in the case, with its positive poletoward SCR1 at the left.Place capacitor C1 in the case, positivelead toward SCR1. Now wire the positiveOCTOBER- NOVEMBER, <strong>1965</strong>lead to the positive binding post of B1. Makea hook in the wire and tighten the nut onthe binding post so that the wire is clampedsecurely between the nut and the screw head.Leave the capacitor lead long enough tobrace the battery and Cl against oppositesides of the case.Connect the anode lead of SCR1 to thepositive lead of Cl, close to the capacitor.Do not solder yet.Now attach the negative lead of C1 to thecommon pole of switch Si. Do not solderyet.Connect one lead of resistor R2 to thenegative binding post of the battery. Tightenthe nut to make a good contact. Solder theother lead of R2 to a pole of Si so that thecircuit between the battery and C1 will becomplete when the switch is at normalposition.Connect a lead of resistor R3 to the remainingpost of SI and solder. Connect theother lead of R3 to the positive lead of Cl,where the anode lead of SCR1 is crimped.Solder the connection using a heat sink.Pressing the button on SI now should breakthe connection between the Cl negative leadand the battery and unload the capacitorthrough R3.55


SCR SlaveThe completed slave photoflash can be mountedon a tripod as shown here. Enough twistedlead is left so the flash can be swiveledin any direction by loosening the wingnut.PARTS LISTB1- 22.5 -volt "B" battery IEveready 412 orequiv.)C1- <strong>10</strong>0 -mf, 25 -volt electrolytic capacitorR1- 2000 -ohm, t/2 -watt resistorR2- 200,000 -ohm, 1/2-watt resistorR3 -<strong>10</strong> -ohm, 1/2-watt resistor51- S.p.d.t. subminiature momentary contactswitch (Switchcraft 963 or equiv.)SCR1- Silicon controlled rectifier, light activatedpower switch IGE -X2 or equiv.)1 -Small metal or plastic chassis box (see text)1 -3'16" x 1" stove bolt; 2 nuts, 1 washer, and1 wing nut to fit1- Bayonet -base flashbulb adapter for AG -1 orM -3 flashbulbs, and reflector2- European -American tripod socket adapters2 -1 /<strong>10</strong>` x 14" machine screws with nuts2 -3íe" flat hex nutsMisc.- Hookup wire, spaghetti, solder, etc.Estimated cost: $ 7.00Estimated construction time: 2 hoursSchematic diagram of the slave photoflashshows how Si provides capacitor unloading.Cut two lengths of insulated hookup wireabout 8 inches long. Twist them together tomake a two -wire lead. Feed the twisted leadthrough hole 2 in the case lid. Fasten one ofthe wires to the cathode lead of SCR I andsolder. Solder the other wire to the pole ofSi where the negative lead of Cl is attached.Close the lid and using a washer and awing nut, install the flash socket on the stovebolt protruding through the lid. Solder thetwisted lead wires tc the socket poles, leavingthe lead long enough to swing the socketeasily. The slave is now ready for work.A Number 5 flashbulb can be used in thesocket without a reflector, or bayonet -baseadapters with built -in reflectors and bulbejectors, available at all camera stores forboth AG -1 flashbulbs and miniature -basebulbs such as the M -2 and M -3, can be used.Caution: Be sure to press the button on SIwhile inserting a bulb in the slave. This un-Igads the capacitor and prevents a misfire.After the bulb is firmly in the socket, releasethe button.Let There Be Light. To add a new dimensionto flash shots ut an individual or group,place the slave high and at either side of thesubject, outside of camera range. It is alsoan effective back -light. The two tripod socketsand the wing nut swivel adjustment forthe flash head give a complete circle of coveragewhile the SCR is pointed at the mainflash.When your picture has a great deal ofdepth, use the slave to light the area farthestfrom the camera. The light from the slavecan also be bounced against the ceiling togive a soft fill -in that eliminates all harshshadows. If you're shooting color, make surethe ceiling is white.Effective distance at which the slave willfire depends on the brightness of the mainflashbulb. A No. 5 bulb will fire the slavefrom about 30 feet. Maximum range whenactivated by an M -3 or M -5 is 20 feet. AnAG -I or M -2 will trigger the slave about 15feet away.There is no need to adjust the slave forvariable lighting conditions. It won't accidentallyfire except in direct sunlight or whenSCR 1 is brought within about a foot of abright indoor light. Sensitivity of the GE -X2varies with the resistance between the gateand cathode. The higher the resistance, thegreater the sensitivity. The author found the200,000 -ohm resistance gave ideal sensitivityfor most photo jobs with maximum safetyfrom misfires.56RADIO-<strong>TV</strong> EXPERIMENTER


MATRIXCIRCUITSby Jack Brayton& Herb Friedmansimple rectangular array of semiconductor diodes plus some switches andlamps can he assembled by you to convert decimal numbers to binary digitsWhen we were in grade school we learnedto perform simple arithmetical problemsusing the decimal number system -mainlybecause we have ten fingers. But computerscan't understand the decimal number system.They understand only their own language:the binary number system and for goodreason -they have only two fingers (on andof). As a result everything fed into a computermust be translated from decimal tobinary before any calculations can takeplace.The electronic circuit which does thetranslating is called a matrix. In spite of thefunction it performs it's neither large norcomplicated. In fact -it's simple to buildand easy to understand. The parts used areOCTOBER- NOVEMBER, <strong>1965</strong>inexpensive and readily available. Even itsmany diodes aren't expensive because they'reoffered in ten -for -a- dollar lots in many partssupply catalogs.To help you learn all about the matrix, wehave prepared three experiments that can beeasily assembled from low -cost parts. Justin case you would like to make a simpledemonstrator for the class room or ScienceFair project, the first experiment is followedby complete plans for a simple, low -costdecimal -binary demonstrator.Experiment 1. A basic matrix circuit thatcan be breadboarded is shown in Fig. 1. Theone and zero of the binary system is representedby lighted and unlighted lamps, respectively.Its input consists of normally-57


open button switches numbered 1 through 9.If we wanted the number 7 converted tobinary we would simply press the number 7switch, S7. With the switch closed the positivevoltage of the battery is applied to theanodes of 3 diodes, DIO, D<strong>11</strong>, DI2, and3 circuits are activated. Each of the activatedcircuits is a series circuit consisting ofa diode, a resistor (R3, R2, R1), and a lamp(14, 12, <strong>11</strong>). Each circuit has 9 volts acrossit.Since a diode conducts whenever its anodeis positive with respect to its cathode thethree diodes, D<strong>10</strong>, DI 1, D12, conduct. Currentflows through the diode, the resistor, andthe lamp of each circuit. As a result thelamps light. In this case lights numbered1, 2, and 4 on the front panel would be lightedand lamp 8 remains unlit.A lighted lamp represents a one while anunlighted lamp represents a zero. Thus, wecan see that the output reads 0<strong>11</strong>1. This, ofcourse, is the binary number for 7. It meansthat the number 7 is composed of zero eights,II 2 3 4 5 6 7 8 9ICONNECT TO SWITCHESR4 R3 R2 RICONNECT TO LAMPSBare copper leads suspended between fleaclips serve as busses to form the matrix.one four, one two, and one one. So all theobserver has to do is add up the numbersassociated with the illuminated lamps tolearn whether or not the matrix convertedthe decimal number to the correct binarynumber.Optional Design Note. 68 -ohm resistorscan replace the diodes in Fig. 1 which aremarked with an asterisk (* ). Their inputswitches go to only one output and the isolationprovided by the diode isn't needed.However, if the inputs were connecteddirectly to the outputs (without the resistor)the current through the lamp would be toohigh.Why and Why Not. Now is a good timeas any to discover for yourself why the otherlamps do not light. Starting from the positiveterminal of battery, B1, try to workyour way through the depressed #7 switch,S7 to lamp 18. Remember, you cannot passthrough a diode unless you travel in the samedirection as the arrowhead in its symbol. Tryevery possible path and you will discoveryou just can't get to lamp 18. Hence, whenS7 is depressed, 18 will never light.PARTS LIST FOR EXPERIMENT 1Fig. 1. Schematic diagram for an easy -to -buildfour digit, decimal -to- binary demonstrator.B1 -9 -volt battery (Eveready 216 orequiv.)(See text)D1 through D15 -1N34, IN34A or equivalentTwo packages of Lafayette 19G6001 diodesor equiv.)<strong>11</strong>, 12, 14, pilot lamps (GE)R1, R2, R3, R4 -68 -ohm, 1/2-watt resistorR5, R6, R7, R8 -68 -ohm, 1/2-watt resistor (Optional-used in place of diodes D1, D2, D5,D13. See text)Si through 59- Single -pole, normally -openpushbutton switch (Lafayette 99G6218 orequiv.)4- Bayonet sockets for 449 lamps (Leecrofttype 7 -<strong>11</strong> or equiv.)58RADIO -<strong>TV</strong> EXPERIMENTER


This is true for the other switches, too.The table below lists the lamps which shouldlight when a selected switch is depressed.Using the circuit tracing technique describedin the preceding paragraph, select afewnumbers and find out for yourself whetherthe table is correct or not. (Editor's note: thetable is correct. if you differ- you'rewrong.)Switch /Lamp /Number RelationshipsDepressSwitchLamps That WillLight <strong>11</strong> 12 L4 18Numbered LampsAdd Up To (S)1S152 2S3 354 455 556 6S7 7S8 859 9When no lamps are lit, they add up to zero- hence, noswitch is needed for the number O.Experiment 2. Fig. 2 shows another matrixcircuit. Excluding its output it worksexactly like the first shown in Fig. 1. In thisnew circuit a one is indicated by positivevoltage while a zero is indicated by no voltage.When an input switch is closed positivevoltage is applied to the proper diodes.When the diodes conduct they have a verylow resistance compared with the <strong>10</strong>,000 -ohm loading resistors. Since we measure thevoltage at the top of the resistors almost theentire positive 1.5 volts of battery B1 can bemeasured whenever a diode conducts.Diodes DI, D2, D5 and D13 in Fig. 2I8 14 I2 <strong>11</strong>BI SPACER MATRIXRear view of the demonstrator shows locationof lamps, switches, battery and matrix.Photo at lower -left corner of page showslocation of front panel lamps and switcheson the demonstrator. Exact parts locationis not critical -lamp jewels are all red.Fig. 2. Basically the same as Fig. 1, thecircuit below provides positive voltage outputon binary busses in place of lamps.<strong>11</strong> 12 14 T8SIS9OCTOBER -NOVEMBER, <strong>1965</strong>-iJ


_can be eliminated (shorted out) and theirinputs connected directly to the outputs becauseneither the diode's isolation or resistanceis needed in this circuit.Experiment 3. The last circuit whichwe'll experiment with is a matrix whose outputsignal is positive voltage and no outputis negative voltage. This circuit is shown inFig. 3.The basic diode arrangement is still thesame. However, the output circuit operatesdifferently. Whenever a diode is forwardbiased (S1 in Fig. 3 is depressed) we have acircuit equivalent to the one shown in Fig. 4.Since batteries BI and B2 are in seriestheir voltages add. Thus, we have 3 voltsacross a series circuit consisting of the con- Microminiature matrix circuit designed fors!-.. #Icomputer application -enlarged ten times.Ducting diode and the resistor. Using theS2#2current -flowing-from- plus -to-minustheory,current flows from the positive terminal ofD2S3 --I- #3BI through D1 and R1 then through B2 andback to BI's negative terminal. The diode.S4.L#4 3D4 drops only a few one hundredths of a voltbecause its forward resistance compared with'4, D5.R1 isS5-1---. . *5very small. This means that the<strong>10</strong>,000 -ohm resistor, R 1, drops almost theD6D7 entire 3S6 _Lvolts.*6Now then, the voltage seenat the output is the sum of the positive 3 -voltS7 _L # 7se _L #eS9 _L_ # 9+<strong>11</strong>821.3V013D14D8DIOD9DllD12D15R4 R3 R2 R1IOK IOK <strong>10</strong>K <strong>10</strong>K#I24#8.GNDdrop on R 1 and the negative 1.5 -volt voltagerise in B2- therefore the output signal is thealgebraic sum of the two, 1.5 volts positive.(Continued on page 133)I N34DIRI+ 81 <strong>10</strong>K- B2T5V+ 1.5V#tTOUTPUT1GNDFig. 4. Equivalent circuit for on signal.Fig. 3. Diagram of a matrix circuit capableof positive (on) and negative (off) signals.PARTS LIST FOR EXPERIMENTS 2 & 3BI, B2 -1.5 volt ID cell or equiv.). B2 used inExperiment 3 onlyD1 through DIS-Same as Experiment <strong>11</strong>1, 12, 14, 18 -Same as Experiment 1R1, R2, R3, R4- <strong>10</strong>,000 -ohm, I/2-watt resistorSi through S9 -Same as Experiment 14- Bayonet sockets. Some as Experiment 1IN 34DIRIIOK- 825V#ITOUTPUT1GNDFig. 5. Equivalent circuit for off signal.GURADIO -<strong>TV</strong> EXPERIMENTER


HUMAN THOUGHT IN ORBITBy K. C. KirkbrideIn the early Spring of 1960, a Frenchpopular science magazine ran a bizarre storydescribing an experiment in ship -to-shoremental telepathy aboard the underwater U.S.atomic submarine, the Nautilus. In distantRussia, a 67- year -old scientist, Director ofPhysiology at Leningrad University, LeonidL. Vasiliev, leafed through the magazine,spotted the startling story and rushed inalarm to the Kremlin. His country had beenfirst in space, he argued, it must be first inharnessing the powers of the mind.A few weeks later, Washington, D. C.sources officially denied the submarine story.Captain William Anderson, first skipper ofthe Nautilus, claimed his sub had been tiedup in drydock at th: time and the story wasa hoax. But true or false, the incident sparkedan explosion of scientific investigation inSoviet Russia that could well prove the undoingof the free world."Mental <strong>Radio</strong>." A few months later, theelderly Soviet Professor opened the firstfully- equipped "mental radio" laboratory.Within weeks, seven more centers opened:at Kiev, Tblisi, Omsk, Saratov, Tarty, Odessa,Moscow. The Pavlovian Institute ofHigher Nervous Activity in Moscow top -priority'd a "subliminal perception" programtitled "Problem of Transmission of Information."Followed the University of Kharkovand the Durov Institute, already famed forits suggestion research on animals.Top Men. The Institute's Dr. E. K. Naumovadded some fifty scientists to its staff toresearch "Transmission of Biological Information"through telepathy. All the Sovietlaboratories teamed experts in biology, physics,mathematics, electronics, cybernetics.For the Soviets spurned mystical theories oftelepathy. As one scientist put it: "We arenot interested in ghosts!" Biological communication,they insisted, would be masteredby cyhernetical studies.Headlines Again. Three years later, newspages headlined stories of telepathic wondersto dim the Nautilus story, experimentsproved out under strict procedures of scientificdocumentation. To the consternation ofthe free world, the Soviets claimed theyhad proved mental telepathy existed andOCTOBER- NOVEMBER, <strong>1965</strong>67


the DXpeditionBY C. M. STANBURY IIAnna discovered you can't CB skip to Mexico without true love down the roadXEZ3000 claimed to be the world's firstCB expedition to a rare country -the RevilaGigedo Islands, 500 miles off Mexico's Pacificcoast. For two months he said, for twowhole months, he'd be there and would makeas many contacts as skip permitted.So come April 15, the day it was scheduledto start, all of us Central County CB'erswere waiting on channel 7, myself (KEZ-62226) included. Up at dawn, nothing. Hadbreakfast, then the band opened up."This is XEZ3000 calling CO DX, CODX." Big deep voice.Almost everyone in the CCCB scrambledonto the channel at once, with KEZ51515loudest of them all. KEZ51515 is Presidentof our group, master DX'er and championCB cheat. Oh yes, KEZ51515 is also a her,Anna Shedoom.I glanced at that FCC violation alreadyon my desk (for working skip no less) andOCTOBER -NOVEMBER, <strong>1965</strong>lost my nerve momentarily. My blood froze!XEZ3000 made contact with an operatorin Pennsylvania and we all had to wait.I decided to fill the gap, put myself onthe air. So I called KEZ51515. "Anna, dowe have a date for tonight ?""Who's that QRM'ing the Mexican ?"Timidly, I answered "KEZ62626.""KEZ51515 to KEZ62626." Crisp. "Wehave a date tomorrow night, if I make thiscontact."It wouldn't matter what I did, really, she'dbag her quarry anyway.The CB'er in Pennsylvania signed off."XEZ3000, this is KEZ51515. How doyou read ?" Our fair president swamped thechannel and the others gave up. Until shemade her own contact, no one else stood achance. KEZ51515 ranged from a mightyten watts on up. This illegal feat Anna ac-(Continued on page 74)69


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the DXpedition (Continued from page 69)complished via two transmitters. A remotecontrolled giant buried under the basementfloor and a legitimate model upstairs just incase the FCC should call. They did onceand found absolutely nothing.XEZ3000 answered her. "KEZ51515, Iread you loud and clear. How me ?""5 by 5." Her usual victorious tone. "AmI your first contact in New York State ?""That's right."I broke in. "XEZ3000, do you read KEZ-62626 ?" My nerve coming back now. IfAnna could defy the FCC .. .She drowned me out. "XEZ3000, do youstill read me okay or am I starting to fade ?"Anna pushed her power up at least another<strong>10</strong> watts."You're still loud and clear, miss. Did Ihear someone else calling just before youcame back this time ?"Softly. "Don't think so."I silently described her, my pad all of oneblock from Anna's. And again she was backon before I really had a chance to break in.Some of the other CCCB'ers tried but nothingwas going to override her mighty carrier.She made idle conversation. "What kindof a location have you? Right on the beach ?"Not only did this girl want to be the firstbut, if she could arrange it, the only oneto work XEZ3000.Anna stayed president of the CCCB byjuggling boy friends. If I recall right, I'mcurrently number two man. But the suckerwho is now last will next month he topdog, for a while. Of course anyone who votesagainst Anna knows he'll be dropped fromthe rotation.XEZ3000 again, and stronger. "I amtransmitting from between two hills but facingthe sea, facing the mainland. Those hillsare covered with tropic vegetation, darkgreen, gentle rolling slopes."Anna sighed. "It sounds like paradise."Then she put on her sultry voice, "Any girlson the island ?"The Mexican laughed, "No, not on thisone ?"I figured the skip was good for anothertwo hours. Even Anna couldn't hold a manon the air that long. So I waited."I'm using an eight -element beam withrot2r." Then she asked, "What's your array ?""Non- directional vertical atop 66 foottower which is in a stand of palm trees withguy wires strung between them."XEZ3000's signal pinned my needle at40 db over S /9."No girls at all." Her laughter, feminine,like wind tinkling through a crystal windowpiece. "Would you like some company ?"And me, all I ever got from Anna werethe icy blasts.XEZ3000 switched on his transmitter butdidn't modulate it for a moment. "Might befun ... when there wasn't any skip."My receiver began to overload, his signalwas fantastic.Anna returned to matters technical. "Hey,how many watts are you putting out fromparadise ?""Just the legal three."More tinkle. "I'll bet. Can see where we'dget along real well on that island."I cut my gain down to nil and he still hadplenty of signal.KEZ5I515, from XEZ3000. My receiveris acting up. Would you give me a longcount."I saw it then. Out the window. A silvergray FCC monitor's van moving up thestreet slowly, past my place and towardAnna's.She began the long count.It took a second for me to get the picture.There was no Mexican at all, just a rovingFCC decoy who was about to catch Annaright in the act. The long count was to keepAnna talking while he pinpointed that transmitter.I can still save her of course. Just pick upthe phone and she'd cut out. Then Annacould claim her call had been pirated. Sucha favor is worth a whole week of dates.Or I can keep quiet, remove that "her"menace from the air once and for all. Whatwould you do?74RADIO -<strong>TV</strong> EXPERIMENTER


RADIO -<strong>TV</strong>EXPERIMENTERaCHECKEICO MODEL 3566FM- Stereo /MultiplexTuner /AmplifierwingseTHJust a few short years ago even the cheapestHi -Fi gear had enough controls on thefront panel to make a Gemini space capsuleobsolete. And it was only last year thatmanufacturers were still talking in terms ofhybrid tuners using tubes and transistorsbecause all- transistor usually meant problems,problems. problems. But how timeschange; today. even the finest of equipmentuses non -complicated ( "family styled ") frontpanels; and of course, all-transistor--or asit's now called, all solid state -is the bywordto success. A good example of the latestin design and performance is EICO's model3566 all- transistor FM stereo tuner /amplifier(receiver).The front panel is stark simplicity. Allcontrols and function switches are gangedfor both channels. As far as the user isconcerned, except for the balance and modecontrol the 3566 looks like a mono receiver.And there are no concealed or rear panelcontrols -even a child would have no difficultyusing this receiver.The Music Goes In. Two standard inputs,an auxiliary and a magnetic phono, areprovided. A tape input is somov hat unusualas it is designed to be driven from a taperecorder pre -amp: a tape head cannot beconnected directly to the amplifier. The tapeoutput jack which feeds the receiver's audiosignal to the recorder is connected ahead ofthe tone and volume controls so that changesmade to the amplifier don't affect the recording.Switching is provided so that three headrecorders can he monitored for playbackquality while simultaneously recording thereceiver's audio input signal.The Music Goes Out. The amplifier willmatch 4. 8 or 16 ohm speakers; the maximumpower being determined by the speakerimpedance (as is typical of transistor amplifiers).While the amplifier is rated at <strong>11</strong>2watts (total) IHF Music Power it must hekept in mind that this is a totally meaninglessspecification and the 52 watt total RMS(sine-wave) Power is the realistic rating.What is unusual is that the 3566 we testedactually exceeded the specs for RMS power,though we conducted the tests at the ratedIHF power.Lab Tests. As shown, the frequencyresponse is outstanding -one could almostplace a ruler on the graph paper and draw astraight line. The curve shown was taken at aconstant 25 watts per channel with the tonecontrols set to the indicated flat position.By correcting the tone controls very slightlythe amplifier can be made almost ruler flat.At 25 watts RMS output the distortion isChassis layout is neat and clean with allparts exposed from the top. In kit form theEICO 3566 offers no assembly problems.OCTOBER -NOVEMBER, <strong>1965</strong>


0.5% THD (total harmonic distortion) from20 to 16,000 cycles, falling to 22 watts at20 kc.The rather excellent measurements are reflectedin what the ear senses. The soundappears notably clean with no masking effectscaused by hum or hiss -what is calledtransparent sound.Only with the volumecontrol wide open is a slight hiss discernable-with no hum. The actual noise level wasbetter than 70 db down.Tone control variation is wide: boost was14.5 db at 20 cycles and 17 db at 20 kc.; cutwas 18 db at 20 cycles and 23.5 db at 20 kc.Input sensitivities for full power outputchecked out at:3.4 mv. for magnetic phono155 mv. for auxiliary and tapeThe Tuner Section. The FM performanceis in keeping with the amplifier. Tuning isnoticeably easy as a broad adjustment of thetuning knob is translated into a small tuningcorrection. A tuning meter is used to "center"the station. The selectable AFC is excellent;it can lock -up even if the tuning isset to the sideband edges of a weak station.A bright full -time stereo indicator is providedwhich indicates stereo transmissionswhether the mode switch is set to mono orstereo.The stereo reception ranks very high. Selectivityis good and the receiver did notoverlap two strong local stations which oftenoverlapped on older FM tuners. Separationis excellent, as is freedom from "breakup"on high modulation levels. (It's difficult todescribe something which is good in all aspects.)One feature we came to appreciate -though we would have never given it a secondthought until one blew -is the externalspeaker fuses which protect the output transistorsfrom damage caused by shortedv . .-,-ai tsi,a.. >.>.;;"-'';` !Mt,:vThough usually little thought of -but provenvery convenient -external speaker fuse holdersallow fuse replacement w/o disassembly.speaker leads. We goofed, and shorted a pairof speaker leads, and it was a distinct pleasurenot to disassemble the cabinet to get atthe fuses. (Why are some manufacturers stillburying fuses under the chassis ?)Finally, a stereo headphone jack is locatedon the front panel. The isolating (gainreducing) resistors are internally wired sothat stereo phones can be plugged in directly.Considering its fine electrical performanceand neat decorator styling the EICO 3566is a rather impressive stereo receiver. Pricedat $325.00 factory wired ($219.95 in kitform) the buyer will find himself givingthe EICO 3566 more praises per dollar thanany other hi -fi purchase he ever made. Formore information and specifications on theEICO 3566 visit your local audio center orwrite to EICO Electronic Instrument Co.,Dept. RT, 131 -01 39th Ave., Flushing, NewYork <strong>11</strong>352.+1EICO 3566 AMPLIFIER / TUNERJWvWo2325 WATT CONSTANT OUTPUTFREQUENCY RESPONSEWITH TONE CONTROLS ATINDICATED FLAT POSITION20 50 <strong>10</strong>0200 500FREQUENCYIK 2K 5K <strong>10</strong>K 20K76RADIO -<strong>TV</strong> EXPERIMENTER


RADIO -<strong>TV</strong>EXPERIMENTERaas CHECKSONOTONE SONOMASTER RM -1KHigh -ComplianceSpeaker System KitThe thing that gives any cabinet a classyhand -crafted appearance is mitered corners;where two sides come together with a 45-degree joint. Many is the home -brew cabinetwhich looks home -brewed simply becausethe corners don't have that professionalmade miter. But the new Sonotone ModelRM -1 K Sonomaster High -Compliance SpeakerSystem Kit is a horse of a different coloras every effort has been made to insure a"factory look ". And we must admit thatSonotone has succeeded quite well.The secret of the RM -1 K's success is thatit's a semi -kit. The cabinet frame, the top,bottom and sides is factory assembled, asis the front panel /grill cloth assembly. Inshort, the cabinetry which is immediatelyWhen you open the RM -1K kit to check theparts, this is all you will find and need toassemble the complete hi -fi sound system.apparent to the eye is done at the factoryby craftsmen; the builder need only screwthe cabinet non -resonant panels together andwire the electronic components. Even if youare all thumbs, Sonotone sees to it that youset a screw straight by pre -drilling all screwholes.Electronically, the RM -I K consists of oneof the new linear high -compliance six -inchwoofers, a sealed tweeter and a cross -overnetwork. While the user must assemble thecrossover it's a simple job as the coil is suppliedpre -wound and the rear panel is pre -drilled for the cross -over's mounting screws.Similarly, the rear panel is pre -drilled forthe tweeter's level control. Sonotone leavesnothing to chance by supplying a pictorialwiring diagram. Follow it carefully and errorsare impossible.Assembly. No glue is involved in the assembly.The front panel is held in place byseveral screws which pass through full -lengthcleats on all four sides of the front panel.The rear panel fits into a dado cut on therear of the cabinet and is retained by screws.Two large, thick pieces of acoustic fiberglassinsulation are provided which almost completelyfill the interior of the cabinet.Speaking of fiberglass, Sonotone has beenquite thoughtful in eliminating "fiberglassitch ". When using fiberglass, just routinehandling breaks off small slivers which immediatelydig into the skin and cause analmost intolerable itching; and it often takesdays to dig out the fiberglass slivers. Sono -tone avoids the itch by supplying a pair ofdisposable plastic gloves which are to beworn when handling the fiberglass insulation.Finishing. While the cabinet, when assembled,has the construction appearance offine furniture it is unfinished -the user mustOCTOBER- NOVEMBER, <strong>1965</strong>77


G,13 CHECKThe completed speaker kit (left) is ready forits fiberglass stuffing. Now is the time tocheck your wiring. Below, a coat or two ofclear lacquer will protect the oil stain finish.After the unit is completely assembled, afine sanding will remove surface scratchesand blemishes. Then wipe on an oil stainof your own choosing to bring out the wood'snatural grain to your taste. Wipe off excess.do his own staining or waxing, and a lot ofsanding. Our kit was not fine sanded, andany finishing treatment we would have donewould result in a strictly amateurish appearance.Ten cents worth of sandpaper and abit of elbow grease to prepare the cabinetfor the stain. We suggest you follow Sono -tone's recommendation and finish the cabinetbefore the electrical assembly to avoida speaker covered with sawdust and stain.Listening Test. Electrically, the Sono -tone delivers what we'd call "good-fi," andconsidering that this is a midget- speaker systemthe sound is quite good. (Sonotone haslarger speakers of similar appearance forthose who insist on the widest possible frequencyrange.) While the bass doesn't shakethe floor, we could not detect excessive frequencydoubling, and the bass through thelower midrange was well balanced- producinga decidedly mellow sound which wasvery pleasant in a small music room.The tweeter is very efficient and with thetweeter's level control wide -open the soundis excessively bright. However, the levelcontrol adjusts the tweeter from full -on toessentially full -off so the user can obtain theexact tweeter balance he desires. While thetweeter is clean, there is a slight edgy quality.The total sound quality is quite good consideringthe RM -1 K's price and size, andthis becomes apparent when AB'ed tothe sound from speakers selling for muchmore. Basically it is a mellow sound comparableto sound quality of the higher pricedconsole phonographs.Considering its low price of $35.50 theSonotone RM -1 K is a good choice whenyou're trying to cram big sound into a smallbudget. If you prefer an assembled unit withoiled walnut finish, the tab is only $44.50audiophile net. For more information, writeto Sonotone Corporation, Dept. 756, Elmsford,New York.78RADIO -<strong>TV</strong> EXPERIMENTER


1<strong>10</strong>How often have you needed a solderingiron for working on your car's electrical system?How many times have you needed asmall electric drill to perform some modificationor repair? And what have you donewhen there was no AC outlet? Most likelyyou were inconvenienced with long extensioncables or possibly were just plain out of luck.Your problem would have been solved if youhad a commercial inverter but they cost. Butyou can wire your own inverter using the circuitshown here. For only $ 1 2.00 you canbuild a 60 -watt inverter that is not onlylimited to soldering irons and drills, but willoperate electric shavers, trouble lights, evenradios and phonographs.The Installation. The inverter is containedin a small chassis box whose frontpanel mounts only the on -off switch, a pow -er-on indicator lamp, and the AC receptacle.The enclosure may be permanently mountedunder your dash or in another convenientplace, and wired directly into your 12 -voltelectrical system. Or the unit can be maintainedportable by adding an input cablewhich can be fitted with a plug to fit yourcigarette lighter: alligator clips could be usedrather than the plug for direct connection toyour battery. The battery should be 12 volts.POWFRFORYOMCaliDON-ALD E. LANCMTERDrive Better Electrically !OCTOBER -NOVEMBER, I91;:,79


R2Transistors Ql and 02 are mounted on aluminumangle stock which acts as a heat sink.After transistors are mounted by followingdetails in text, wire resistors R1 through R4 asshown above. Chassis punch, left is excellentfor cutting a circular hole for the AC outlet, J1.Experiments with a 6 -volt input and a differenttransformer did not give satisfactoryoperation of the circuit.The Circuit. Commercially available electronicparts are used throughout the inverterexcept for the aluminum heat sink which iscut from aluminum angle stock. The circuit,about 75% efficient at full output, draws between.3 and 7 amperes from the battery dependingon the load.Incidentally, the inverter was constructedwith pop rivets and this project is an idealjustification for one of these new tools if youhave been looking for an excuse to buy one.The pop rivets make the circuit completelyshock and vibration proof which is importantfor a permanent automotive installation.Compared to #6 hardware, they cost less,go on faster, and look better.As shown in the schematic diagram, theheart of the inverter is a two transistor multi -vibrator, Q1 and Q2, and a step -up transformer.Transistors Q1 and Q2 are low costgermanium 150 -watt power transistors, whileT1 is a stock control transformer. In operation,one transistor is always off, while theother is always on. Because of the induct-ance of TI and the two biasing resistors R1and R2, the two transistors alternate conductingroughly I20 times a second. Thismeans that current first flows from yourauto battery through QI and the left halfsecondary of TI, and then flows throughQ2 and the right half secondary of T1. Thisproduces a square wave of 7- 12 volts at theTI secondary, which is stepped up and appearsat the primary. Cl, LI, and C2 forma filter that first de- spikes the square wave,then forms it into a trapezodial wave that isa fair approximation to a 60-cps sinewave.Power Out. Output voltage is around1<strong>10</strong> volts rms for no load, dropping to about<strong>10</strong>5 for a 50 -watt load and about 95 for a60 -watt load. The voltage drops off badlyif you try to draw more than 60 watts out ofthis circuit.Switch SI is a 6- ampere s.p.d.t. slideswitch in series with a thermal circuit breaker,CBI, that opens at eight amps to protectthe car's electrical system from a short or anattempt to load the inverter too heavily. Aneon pilot lamp, II, across the output drawsvery little current and reminds you whetherthe inverter is on or not. AC output is viaa standard chassis mounting socket, J1.Chassis Assembly. The chassis layout isshown in the photographs. For assembly youwill need a chassis punch (1 %2" round or1 <strong>11</strong>/44' keyed), or else a file and a lot ofpatience for the big hole for the AC outlet.Continue chassis preparations by drillingthe front holes for the switch and pilot lite.80RADIO -<strong>TV</strong> EXPERIMENTER


Power switch 51 is shown being installed witha pop riveter, above. Indicator lamp <strong>11</strong>, aboveright, just snaps into place on the chassis.Partially assembled unit, right, shows themounted heatsink subassembly and the transformer;the terminal strip, TS1, mounts CBI.SICBITSIR401Next, turn the chassis upside down and drillall the Vs" ( #30) holes for terminal stripTS -1, the heatsink, and transformer TI. Ifyour inverter is to be portable, drill fouradditional holes for rubber feet on the bottom.Finally, drill the hole in the rear forthe input power cable. Use a Heyco or otherstrain relief if you can get one; otherwise usea tight fitting rubber grommet. This completesthe sheet metal work. Snap in the out-put socket J I and pilot lite 1 , and rivet SIin place. Make sure Si is right side up.Follow this up by riveting TI, TS1, and thefeet, if used, in place.The heatsink comes next. A 41/2" lengthof <strong>11</strong>/2" aluminum angle stock is used; anypiece of aluminum about the same size willwork as well. Drill and cut as shown in theheatsink detail photographs. Make certainthere are no ridges or burrs on the transistormounting holes. The transistors must be insulatedfrom the heatsink using the micawasher and insulated bushings provided. Usesilicone grease between transistor, washer,and chassis. You can rivet the transistorsin place, otherwise use #6 hardware. Now,solder resistors R l through R4 to the transistorsand add the two collector leads (4"long) and jumper the two emitters. Theheatsink is then riveted into the chassis.Corrections. Wiring is easiest if youstart at the output and work backwards,starting with the output socket J I, capacitorC2, and the pilot lamp <strong>11</strong>. Both primaryOCTOBER- NOVEMBER, <strong>1965</strong>windings of T1 are wired in parallel byjumpering lugs 1 and 2, and 3 and 4.Connect one collector lead to T1 primarylug 5, the other to lug 8. It doesn't matterwhich goes where. Route a lead from thetransistor emitters to switch Si; then a secondfrom the other switch terminal to terminalstrip TS1 and one end of the circuitbreaker CBI I.The input cable is run through the strainrelief next. If the cable will be less thanfour feet long, ordinary lamp cord will do. Ifyou need greater length, go to a heaviercable. Watch polarity! Connect the negativeinput lead to transformer secondary lugs 6and 7. The positive lead goes to one end ofthe circuit breaker. This completes the internalwiring.Prepare the input cable using a cigarettelighter adaptor or adding two large alligatorclips. Use one red and one black insulatorover the clips. Again, watch polarity!Test the inverter first with no load; thepilot should light. Then load the inverterwith a 25 and finally a 50 -watt light bulb. Itis better to turn on the inverter and thenplug in the load, as the multivibrator mightbe reluctant to start under heavy load.81


RIJ1The choice of input connector type is yours.PARTS LISTC1 -3 -uf, 200 -volt Mylar paper capacitorC2- .22 -uf, 200 -volt Mylar paper capacitorCB1 -4 -amp rated current circuit breaker; tripcurrent, 8 amperes (Sylvania MB -318 orequiv.)Il -Neon indicator lamp assembly (red) (Allied8E126)J1- Chassis mounting AC receptacle (Amphenol61F or equiv.)1.1 -RF choke coil, 7 uh, <strong>10</strong>00 ma (Ohmite Z50or equiv.)01, 02- Germanium power transistors (TexasInstruments <strong>11</strong>3027 or equiv.)Rl, R2 -150 -ohm, 2 -watt resistorsR3, R4 -33 -ohm, 1 -watt resistors51- S.p.s.t. slide switch, 6- ampere rating (Allied35B026)T1- Control transformer, <strong>11</strong>5 -volt, 60 -cps primary;24 -volt center tapped secondary @ 2amperes (Allied 62G353)751 -2 -lug terminal strip1-4" x 5" x 6" chassis box (Bud CU2<strong>10</strong>7A orequiv.)Misc.- Aluminum angle stock heat sink, cigarettelighter adapter plug or alligator clips,lamp cord, strain relief grommet, pop rivets,hardware, rubber feet, hookup wire, siliconegrease, solder, etc.Estimated cost: $12.00Estimated construction time: 4 hoursPOWER ONINDICATORI 1 ..4<strong>11</strong>1.i,illiaL:AC RECEPTACLE JIPOWER PLUG MATESWITH CIGARETTELIGHTER SOCKETON -OFFSWITCH SIInside view of the inverter, top, shows powercord strain relief grommet above the transformer.Power -on indicator, I1, on front panelprovides o good visual "power -on" reminder.The stability of the 60 cps is fair as may heevinced by some phonograph wow, par -ticularly as engine speed is varied. This isto he expected of a circuit this simple. Butunless you're using your phonograph in yourcar, and listening with your hi-ti ear, youshouldn't have any difficulties with the performanceof this inverter.I2VDCAUTOMOTIVEELECTRICALSYSTEM(SEE TEXT)Schematic diagram of inverter shows two -transistormultivibrator heart and step -up transformer Ti. FilterLl -C1 -C2 de- spikes the transformer output and formsa trapezoidal wave approximating a sinewave shape.01 -02 BASECONNECTIONS(BOTTOM VIEW)82RADIO -<strong>TV</strong> EXPERIMENTER


If your definition of radioincludes "sending informationvia electromagnetic waves,"then radio was born circa 1866By Benjamin RuheMAHLON LOOMISDiscovererof <strong>Radio</strong>It was a day cool and clear in the monthof October. The date has not been recorded,but the year was 1866. MahlonLoomis, a Washington dentist was preparingto demonstrate in the presence of eminentscientists and electricians of his dai' an inventionhe had made.He had come to Bear's Den Mountain inthe Blue Ridge near Bluemont, Va., justsouth of the present Route 7 as it passesthrough Snickers Gap and crosses the AppalachianTrail. A second team of men hadbeen posted by Loomis 18 miles away atopFurnace Mountain, directly across the PotomacRiver from Point of Rocks, Md.They were poised for an historic event -an event whose meaning and implicationswere to be widely debated in the followingyears and now, a century later, are still farfrom being settled.First, two kites were let up, one from eachsummit. The kites had wire gauze attachedto their undersides and were flown from600 -foot lengths of copper wire. The timepiecesof both parties had been synchronized.Then one of the aerial wires wastouched to the binding post of an "indicator"-amodified compass whose directionalorientation could be disturbed by an electricalimpulse.As the connection was made, electronsdrawn from the atmosphere jumped from thewire to the grounded "indicator," or detector,and created a spark, the spark causedthe antenna to pulsate with electrical vibrationsand this in turn produced electromagneticwaves which radiated into space. Thesignal, traveling with the speed of light, instantlyregistered on the second kite 18 milesaway, traveled down that antenna and wasrecorded on a detector under observation bythe group there.A series of signals was now given, followinga prearranged pattern. Each spark"deflected or moved the needle at the otherstation with vigor and precision," wroteLoomis in his record of the experiment. Thearrangement was then reversed and thestation sent signals back, "a perfect duplicateof those sent."Continued OverlentOCTOBER -NOVEMBER. <strong>1965</strong>


"A solemn feeling seemed to be impressedupon those who witnessed the little performance,"Loomis continued, "as if somegrave mystery hovered there around thatlittle scene."<strong>Radio</strong> Is Born. Grave mystery it was indeed.What Loomis had almost certainlyjust demonstrated for the first time waswireless -or radio, one of the most usefulof all inventions. The spark was the keyelement. It generated RF oscillations in thecopper aerial and no one had ever done thisbefore. Loomis was to say later, "The timewill come when this discovery will be regardedas of more consequence to mankindthan was Columbus' discovery of the NewWorld."A Disciple. Did things happen on Bear'sDen Mountain just as Loomis describedthem? Thomas Appleby, a retired Navy commanderand a radio expert for 66 of his79 years of life, thinks so and he has inrecent years made the recognition of Loomis'achievement a principal goal in life. CommanderAppleby has been researching thehistory of early wireless five years. When hestarted, he had never heard of Loomis, butthe trail quickly led to the dentist, he says,and Appleby is now a firm believer in thedentist's greatness."The neglect of Dr. Loomis is long overduefor correction," he says. "He is a pioneerin whose work the United States is entitledto take great pride.""If the man on the street is asked whoinvented wireless, he will say 'Marconi'every time," says Appleby. Yet the Italianwas not yet born when Loomis conductedhis first successful experiment, he points out,and adds: "Guglielmo Marconi didn't claimto have invented wireless, he was the firstto commercialize it."Who Was Loomis. Born in 1826 in Oppenheim,N. Y., of a renowned family ofpoets and professors, Loomis was reared inSpringvale, Va., about 20 miles from Washington.He was largely educated from hisfather's library. At 20, he walked to Cleveland,Ohio, and learned dentistry in theoffice of a family friend. He soon invented aporcelain denture and this product won himrenown in the profession. After marrying,he came to Washington and set up a practiceat 907 Pennsylvania Ave. NW in a buildingwhich still stands, although it is marked forearly demolition. From Loomis' brainDiagrams from Loomis' notes record for posteritythe equipment setup used in 1866. Above,receiving station consists of detector on log,antenna suspended by kite and ground wire inlake; below, identical setup, however, antennais connected to detector to trigger impulse.Diagram made by Loomis circa 1864. Note thatthis early sketch depicts first experiment.84 RADIO -<strong>TV</strong> EXPERIMENTER


Transmitter made recently from LDomis' notesby Thomas Appleby to duplicate early tests.Remnants of the original equipment made byLoomis displayed at the Smithsonian Institute.f!<strong>11</strong>_-FORERUNNER WIRELESSTELEGRAPHYFROM NEARBY EARS DEN MOUNTAIN TO THECATOCTIN RIDGE. A DISTANCE OF FOURTEENMILES Cot. MANLON LOOMIS, DENTIST,SENT THE FIRST AERIAL WIRELESS SIGNALS.O368 -73, USDIC KITES FLOWN BY COPPERWIRES LOONIES RECEIVED A PATENT IN187E ANO NIS OMPANY WAS CHARTERED BYSONORES: IN 3873, BUT LACK OF CAPITALFRUSTRATED -NS EXPERIMENTS, HE DIEDtN '986y...,.,.1 ...Signpost on Route 7 south of Bear's DenMountain informs travelers of site's history.poured useful ideas: a patented convertiblevalise, a collar fastener and an electricalthermostat.Having become interested in electricitywhile a student, Loomis tinkered with it foryears. A magazine, reporting on this at theturn of the century, said, "It worked successfully,too; for the finest of grapes andproduce were grown there, as people frommiles around could testify." Scientists nowbelieve that such "fertilization" may in factwork because the current heats up the earthand this may stimulate plant growth. Loomisstudied Samuel F. B. Morse's invention ofthe wire telegraph and eventually conceivedof a better system. He theorized that insteadof a wire it would be possible to use theupper atmosphere to complete the electricalcircuit. On July 21, 1864, with the CivilWar dragging on, Loomis sat in his officeat 907 Pennsylvania and made a drawing ofa peak with a kind of martini glass havingroots sprouting from it. Two words werewritten down -"copper," referring to theelectrical ground, and "key- board," referringto the spark point.The drawing shows a complete wirelesstelegraph system. It has a grounded verticalantenna, top -loading capacity, a spark -gapand this may stimulate plant growth. Loomisonly dimly grasped what he was doing sincethe theory of high frequency electromagneticwaves in space had not yet been formulated.In Appleby's view, this makes Loomis'achievement the more amazing.Loomis apparently thought that an elevatedaerial would conduct the charge fromoverhead clouds to the ground and this lesseningof the cloud charge would in somemanner affect the aerial system at a distantstation -an apparently erroneous theory.Loomis also spoke vaguely of his systemcreating "pulsations" and with this thoughthe was on the right track.Does He Deserve Credit? Elliot Sivowitch,assistant to the curator in the Divisionof Electricity at the Smithsonian states, "CertainlyLoomis is the first to have done wirelessexperiments in such an organized fashion."But Sivowitch wonders whether it isproper to give Loomis credit for an inventionhe didn't understand. "The state of the artjust wasn't advanced enough," he says.Sivowitch feels that more corroborativeevidence of Loomis' experiments is needed.(Continued on page 134)OCTOBER -NOVEMBER, <strong>1965</strong>85


CannedSound ByWhen you arrive home from work forHugh Gaugleryour next free evening. leave your coaton the chair. take the wire hanger to the dinnertable. empty two cans of beans or stewedtomatoes. enjoy your meal, wash the cans,add a small speaker, some wire, foam rubber.fabric, and tape, and you'll be all set, andhave all you need to relax and fabricate anultra -low cost earphone -desk speaker. De-spite its lowly origins, this little unit has sucha professional look, it could have come froman NBC sound studio.The First Can.Remove one end from acan about 4 inches high with a 3 -inch diameterand mark it with horizontal and verticallines as shown. The middle horizontal lineshould be about 1 -inch above the littlespeaker when it is set in the can cone up. Theline above should divide the remaining partof the can in half. The vertical lines shouldbe about 1 -inch apart: make sure a line doesnot fall on the seam of the can. Cut downeach vertical line to the second line and foldeach resulting strip in half. Squeeze foldline with pliers.Mount the 3 -inch diameter replacementspeaker, which you could get from Lafayette<strong>Radio</strong> (99G6099) for about $1.50,in the can by drilling two holes in the bottomof the can and a third in the side for thespeaker wire. Tie a knot in the wire near thespeaker and place a grommet in speaker wirehole.The Second Can. To make the perforatedcover tor the speaker, take the second canand, using a nail and hammer, punch holesin its bottom. Then push the bottom outwardfrom the inside since it will have curvedin from punching the holes, and cut it outwith a can opener. Place the cover over themounted speaker, after the speaker cone iscovered with a piece of dark grille material,and bend every other strip in half again andfold into the can to hold the perforated coverin place.Foam Rubber Pad. Wrap a 1 -inch thick,3 -inch wide foam rubber strip around thecircumference of the can and cut to fit.Then, after scribing a line the length of thestrap 3/5 -inch from the top, fold the strip inThis tin -cantrick will revive thestatus the tin can lost when youdiscarded your boyhood walkie- taILi.'86RADIO -TL EXPERIMENTER


half along its length and sew or staple thetwo halves together along the scribed line.Then carefully cut off one of the tag ends.Holding the rubber around the end stripsof the can, mark the rubber on each side ofthe strips and thread a piece of hookup wirethrough as shown in the photo. Also, threada wire through the roll of foam rubber thatwill form the ear pad; this will firm its shape.The foam pad is now placed on the can andpushed down on the protruding strips. Tiethe ends of the support wires together andfold down the remaining strips.Professional Polish. Now tape the foamtag end around the can, and also run tapearound inside the earpiece to cover the foldedstrips. Cover the entire unit with a suitablefabric, securing it with glue. Finish byfashioning a table stand and headset holderfrom the coat hanger you hijacked from thecloset, and terminating the speaker wire withplug or connectors to suit your applicationsfrom your spare parts box.Now put your earphone -desk speaker togood use knowing that tomorrow night youwon't have to eat out of a can.After removing the top of thefirst can, mark it as shown in (1)and cut down the vertical linesto the second horizontal line.Fold each of the strips as shownin (2) and begin the installationof the speaker. Fabricate a perforatedcover for the speakerusing a second can and followingthe instructions in the text.Then place the cover over thespeaker and secure it in placeby folding every other strip asshown in (3). The foam rubberstrip (4) is folded in half andstapled or sewn along the line.Then, after one of the tag endsis cut off, wrap the foam earpad around the can and mark iton each side of the remainingstrips (5) so a wire lacing can bethreaded through to secure it.Before mounting the pad, run awire through the center (6) tofirm its shape. Then lace the pad(7) and place it on the strips (8).Tie the lacing wire ends togetherand fold down the strips. Runtape around the foam tag end (9)and then just cover the speakerwith a material of your choice.Finish up by making a table standand headset from coat hangers.64OCTOBER- NOVEMBER, <strong>1965</strong> 87


AUGUST -SEPTEMBER <strong>1965</strong>Propagation Forecastby C. M. StanburyOne of the most important changes sinceour last edition does not show in the chartbelow. This is the drastic reduction in noiselevel on 90, 60 and 49 meters. While you*HI should try for the same areas at approximatelythe same times on these bands,reception conditions will be much better.Along with the above goes a continuedimprovement of Latin American receptionon 49 meters. Unlike last year at this time,the band will not be blanketed by trans -Atlantic QRM although a few stations likethe BBC and <strong>Radio</strong> Portugal will still providesome interference. Because signals fromthe Caribbean, South and Central Americawill be so strong, almost any SW receivercan be used for fishing in these troubledwaters.Latin American stations usually identifyby slogan (La Voz de Columbia, <strong>Radio</strong> Relojetc.), city and country-and reports can beaddressed to them by simply using this information.South -of- the -Border transmittershave a habit of drifting off their assignedfrequencies, thus the SWL can never besure where he'll find them. Further, use ofnon standard frequencies means a multitudeof annoying hetrodynes (whistles). MostLatins speak Spanish of course, but NOTin Brazil where the language is Portuguese.Meanwhile the number of high poweredregional transmitters in Africa on 49 metershas also increased and this will mean moreinteresting DX -J -4 particularly from 9.00p.m. until 3.00 a.m. as noted on the chart.Abidjan, Ivory Coast potent rig on 6015 kcis an especially good bet starting at 1.00a.m. EST.012LISTENER'STIMEoo3o90205084oo000oi r t ( 1 i t I I t t I I 1 1Asia (except 4- 31 -)4- 19-- >*- 25- >4-- 25--*4 -16,19-a*19,25*Near East) (41) (25) (19) 'POOR)(16)Europe, Africa (N 4- -41- -* 4-41 -* 4- 19-- *4-16, 19, 25 --* *25, 31* 4- 31 ->Df the Sahara) & (3<strong>11</strong>, 491 ,POOR)Near EastAfrica (S. of 4- -49--> 4-41 -* 4-19 -> E- -16. 19- 9. 431, 25 *4- 31-*E49, 60the Sahara) (60) (POOR) rECR;South Pacific 4-- 31 -4. 441, 49 >+25, 31a4-- 25-- -i 4-19 -* 416, 19 *4- 25-*(25) (POOR)Latin America 4 60 ----> *-- 49 --* 4--- 25 -(49, 90)1--> 4- 31 --1.4- 49, 60, 90 --->To use the tab':e p .Jf your finger cn the region you want to hear and log, move your finger tountil itthe rightis under the local standard time you will be listening and lift your finger. Underneath your pointingdigit will be the short -wave band or bands that will give the best DX results. The time in thepropagationaboveprediction table is given in standard time at the listener's location which effectively compensatesfor differences in propagation characteristics between the east and west coasts cf North America.However, Asia and the South Pacific stations will generally be received stronger in the West whileEurope and Africa will be easy to tune on the east coast. The short -wave bands in brackets are givenas poor second choices. Refer to White's <strong>Radio</strong> Log for World -Wide Short -Wave Broadcast Stations list.88RADIO -<strong>TV</strong> EXPERIMENTER


fromupperlimboThere's a whole new world of DX'inga notch above 30 mc. on your receiverthat pulls in space shots, 19 -meterSW harmonics, fixed stations and moreby C. M. Stanbury IIIn the event you haven't noticed, mostshort -wave receivers extend slightly aboveSW's limit (30 mc.). Some go to 32 mc.,others to 31 mc. And just how do you countthis extra 2000 kc? As SW (which it isn't)or VHF? Such controversy makes for interestingDX and we have no less than threedifferent varieties.Way Out DX. The rarest type appearswithin the first <strong>10</strong> kc. above 30 mc. Thisis a Soviet space band. Cosmos 31 transmittedon 30007 kc., Elektron 1 on 30008 -the latter may still be in business. How manyother Soviet satellites have used this band,and will use it in the future, that only theReds know and they're not telling. By monitoringthis band constantly, you might detectoñre of their secret satellites, but such DXcertainly will be rough. You can of coursedetermine that it is a satellite by turning onyour BFO. If when a signal is heard, thepitch varies (as the space vehicle approachesthen passes on) you have found your quarry.But check your BFO against a fixed stationfirst -you can't QSL a drifting receiver.Harmonics. While those other two varietiesof limbo DX aren't nearly so mysterious,they will be considerably easier to hear.Probably the easiest, although reception willstill be sporadic, are harmonics generated byshort -wave broadcast stations. Usually it willbe those operating on 19 Meters (15,<strong>10</strong>0 to15,450 kc.) which will appear, however onceOCTOBER -NOVEMBER, <strong>1965</strong>in a while a fugitive from 49 Meters willmake it too. When the latter event doesoccur, you can consider it almost as rareas any Soviet space vehicle. For the benefitof newcomers, a harmonic is a multiple ofthat frequency upon which the station intendsto transmit. Thus, the fifth harmonicof HJKJ 6160 kc. (see QSL card) waslogged on 30,800 kc.Skips. Short -wave broadcast harmonicsare nearly always weak but can be heardup here because of virtually no QRM. Suchreception (beyond the horizon) dependsupon the Ionosphere, that region of ionizedgasses which reflects radio signals back to,and around, the curvature of the earth. Twoionospheric phenomena make earth boundDX possible in upper limbo -F2 reflectionand sporadic E layer skip. Reflection by theF2 layer produces the most spectacular DXresults and can be considered a naturaloccurrence. It is best in winter, during daytimehours and when the sunspot count isway up. The count is now rising. When itreaches a peak around 1968, 31 mc. receptionmay occur from any part of the world.The Sporadic E layer is an abnormallygood reflector that occurs at approximatelythe same height as the normal E layer (whichwould never reflect 31 mc. signals). Causeof Sporadic E is unknown and it's appearanceis for the most part unpredictable,although late spring and summer seem best.89


- .wEast of the Mississippi, Sporadic E will onoccasions produce harmonic reception from<strong>Radio</strong> Canada with transmitter at Sackville,New Brunswick. WRUL and the Voice ofAmerica at Greenville. Out West, watch forKGEI ( "Voice of Friendship" at San Francisco),plus the VOA stations at Dixon andDelano, California. Getting this type of receptionverified is always touch and go.Some stations will acknowledge it. otherswon't. Such radiation is of course technicallyillegal even if to a certain extent unavoidable.Locals. All right, who in the U.S. is supposedto operate here? Well, the first 560 kc.Mite4414<strong>11</strong>kAIR -MASS BOUNDARYATTITUDE ABOUTONE MILE OR LESSScattered clouds of relatively dense ionizationoccasionally appear at the some approximateheight as the E- layer. Very good 30-mc.- and -up skip can be expected in NorthAmerica during spring and early summer.is assigned to the military and no informationis available on their activities in thisarea. Above 30,560, the FCC licenses landtransportation services (railways, truckers,(Continued on page 135)Upper Limbo Call Letter ChartKA-KB, WA-WBKC-KD, WC-WDKE -KF, WE -WFColorado, Iowa, Kansas, Minnesota,Missouri, Nebraska,North, S. DakotaConnecticut, Maine, Massachusetts,New Hampshire, RhodeIsland, VermontNew Jersey, New YorkKG -KH, WG -WH Delaware, D.C., Maryland,PennsylvaniaKI -KJ, WI -WJ Alabama, Georgia, Florida,Kentucky, North & South Carolina,Tennessee, Virginia (includingoff -shore oil rigs)KK -KL, WK -WL Arkansas, Louisiana, Mississippi,New Mexico, Oklahoma,Texas (including off -shore oilrigs)KM -KN, WM -WNKO-KP, WO-WPKQKR, WQ-WRKS-KT, WS-WTKU-KVKW-KZWWCaliforniaArizona, Idaho, Montana, Nevada,Oregon, Utah, Washington,WyomingMichigan, Ohio, West VirginiaIllinois, Indiana, WisconsinPacific (including Hawaii)AlaskaAtlantic- CaribbeanThis table applies to those stations officially designatedby the FCC as "Land Stations ".At left are front and back views of a OSL receivedfrom CBC, Canada and QSL- letter (below)from <strong>Radio</strong> Cadena Nacional, Colombia.INTERNATIONALWe p.aw. ,. n ,a,w.pwn o, CBC Ini . , .In,.,n.,..w wsulwnr...u.ur9,


RADIO-<strong>TV</strong>EXPERIMENTERa3 CHECKAMPHENOL MODEL 5243 -Tone, 24 -CodeSelective Call UnitFrom its inception, perhaps the greatestproblem with the Citizens Band is its totallack of privacy. Not the privacy associatedwith transmission as CB was designed andis a "party line system." For our purposesprivacy is the elimination of signals not specificallyintended for you. The earliest attemptsat privacy was the squelch controlwhich eliminated noise when no signals werebeing received. But the squelch is not selectiveand any signal, whether intended foryou or someone else, can he heard. Since abusy office, the home and even a mobile stationis not necessarily the place for a continuousstream of radio signals, the CBmanufacturers looked for some means to"code" transmissions so that only the appropriatereceivers would be activated. Fromtheir first efforts came what is known as the"Selective Calling Adaptor" or "SelectiveCall."False Calls. While the single tone selectivecall is effective to a high degree, it ispossible for two stations on the same channelto be off the center channel just enough sothat the beat (heterodyning) produced bythe two signals is exactly the frequency towhich the single tone selective call responds.And it is even possible for noise pulses totrip a single frequency selective call. Aseffective as the inexpensive call is, falsingthcactivation of the receiver by signals otherthan the proper tone -can he annoying.Another difficulty with the single frequencyselective call is that several stationsin a given area might all he using the sametype of equipment and they can easily activateeach other.One way to almost eliminate the problemsof falling and high density selective calls isto use a selective calling system that usesOCTOBER -NOVEMBER. <strong>1965</strong>several different lone bursts to activate areceiver, and the Amphenol Model 524 SelectiveCall is a perfect example of this typeof operation.How Amphenol Did It. The 524 uses afour -channel resonant reed relay for control.and all channels are used for a singlecode -the total available codes is 24 fortransmitting it'd one for receiving. Here'show it would he used. Assume you run adelivery service with 23 trucks. For maximumefficiency there's no need to tie up 24vehicles in radio communications when commentsare addressed to one vehicle. So eachvehicle's receiver is preset to its own selectivecode. For the sake of discussion we'll assumethe base station -the control point -is set tothe #<strong>10</strong> code. To reach any given vehiclethe hase operator simply sets the 524's dialto the code number corresponding to thedesired truck and presses a lever. If the dialwas set to #I5 only the truck with the #15receiving code would he notified that it wasbeing paged: the oti:er vehicles would haveno inkling a radio contact was taking place.In a similar manner, each vehicle couldinitiate a call to the base. Since their selectivecall dial are set to the #<strong>10</strong> channelthebase channel -the hase receiver wouldhe activated by any truck in the fleet. Theoperator would know who it is and couldanswer by using the code signal or couldanswer as a straight CB operation withoutusing code (an important feature we'll getto later); either way, only the hase and thesingle vehicle hear each other, again theother vehicles have no idea a conversationis in progress. When more than one vehiclemust be involved the hase station can pagethe appropriate stations using coding, theneveryone switches their selective call to91


tAmphenol's selective call unit can be placeddirectly on the transceiver (top, left) or mountedto an auto dash. Connection to CB setis simple. Since speaker muting is providedin Amphenol CB rigs, only three connectionsare made to the rig (top, right).The receiving code is easily changed (left)by rearranging four plug -in leads. No desolderingis necessary to pick one of 24codes. Dial selects any transmitting code.normal operation and they use their transceiversas if the selective call didn't exist.While at first reading the foregoing mightappear complex, read it through again andyou'll see it's about the easiest way to insureabsolute privacy. First, there's virtually nofalsing caused by noise or other stations;receivers activate only when they receive thecorrect code. Second, since the selectivecalls are switched to normal operation assoon as the receiver is activated it doesn'tinterfere with the simplified operation commonto CB gear. And finally, since the selectivecall can be bypassed the CB transceiverscan be used as originally intended-.as if the selective call didn't exist.CB Tie -in. The 524 is specifically intendedfor operation with Amphenol's and Cadre'sall- transistor transceivers -models 500 andup. These transceivers are already equippedto accept selective call adaptors -a terminalstrip on the rear apron provides the B+(battery) and speaker connections. Yousimply connect the three lead cable from theselective call to the matching terminal stripconnections. A special adaptor, part of theselective call, plugs into the transceiver'smike jack and the mike plugs into the adaptor.No changes are made to the transceiver'swiring.When the tone burst (actually a sequence)arrives at the receiver, the receiver'sspeaker is automatically connected and alight flashes on the front of the selective call.If remote paging is required, a bell, buzzeror lamp can be connected to relay contactswhich are connected to a terminal strip onthe rear of the selective call. When the contactis completed the call's mode switch isset to normal- releasing the call's holdingrelays. When the lever is returned to thesquelch position the receiver is muted untilthe correct tone sequence is received.While the Amphenol 524 can be connectedto virtually any transceiver, it's amajor undertaking: the existing mike connectormust be replaced, the transceiver wiringmust be modified and a terminal stripor socket must be installed on the transceiver.While it is not a difficult job for anexperienced technician or a service shop wedon't suggest the modification be tackled bythe average CB'er. If you think the 524 isyour cup of tea let an experience techniciando the installation; or obtain the Amphenolor Cadre CB transceiver.How It Worked. In our field tests the524 worked to perfection; never once didwe experience falsing; the shop has neverbeen so quiet. Even though Amphenol statesthat 4 of the 24 codes are more susceptibleto falsing because they use an ascending ordescending tone sequence, we experiencedno falsing under all conditions of interference.We feel the Amphenol 524, priced at$84.95, is unquestionably the answer to eliminatingthe contact grind in high density CBareas; and it's the best answer so far for establishingyour own "private" communicationssystem on <strong>11</strong> meters.I192Rhino -<strong>TV</strong> EXPERIMENTER


lake a TapeBrearTake a tape break in your shack andmake life easier for your DX ears and CWcramped fingers. Many operators like yourselfhave access to tape recorders or areready to update their audio rigs with tapegear. Here are several shack tape recorderapplications to get those reels rolling.It's All In the Input. Nearly every taperecorder has a "radio" and /or "phono" inputin addition to a mike input, additionalinputs which make it easy to hook a recorderinto a communications receiver. Usually,the recorder "phono input" is pluggedinto the receiver headphone jack, while"radio input" usually means you clip ontothe voice coil of the receiver speaker. Mostrecorders allow you to monitor phono inputthrough the recorder audio system, but notwhen using "radio" or "microphone" input-because of possible feedback between recorderspeaker and mike or between recorderspeaker and receiver speaker. When youdecide how you are going to hook receiverto recorder, make up a shielded "patch cord"with the proper plugs (or clips) on the ends,making sure you're going to have a goodground between the two instruments.If plugging into the receiver headphonejack doesn't automatically cut out the receiverspeaker (as it does in most communicationreceivers), don't panic. Use the receiverspeaker for monitoring instead of therecorder speaker, and drop the recorderLet a tape recorder take over in your shack ham today!CQ automatically, make Morse code tapes for Novices,record Oscar's space signals, and relay back test signals!audio to zero. Do the same thing if you'relatching on to the receiver speaker voice coil.If your recorder doesn't permit monitoringby means of the recorder speaker, you'restuck with the hook -up that leaves the receiverspeaker on- unless you can rig up aSiamese connnector at the headphone jack soyou can monitor with a pair of headphones.1f you have a "phone patch," take a goodlook at the circuit and you will probably findideal conditions for matching both input andoutput of the tape recorder to the receiverand transmitter. We won't attempt here todetail custom circuits, but at my station asingle switch was added to the phone patch,which switched all circuits. Potentiometerswere added to both the input and output ofthe recorder so that a single setting of therecorder volume control would balance bothrecord and playback levels to match thereceiver and transmitter.Don't Get Buggy. For absolute simplicity,l've found that sticking the recordermike up to the receiver speaker is unbeatable.But you get hugs. Bug No. 1 is roomnoise and reverberation. Bug No. 2 is thatintroducing a less- than -perfect microphonemight reduce the fidelity of the incomingsignal. In certain applications this won't do,as in attempting to tape a fellow -ham's modulationcharacteristics for playback. Yourmike characteristics added to his modulationcharacteristics doesn't give him a true result.By Art BrownWA2TUFOCTOBER-NOVEMBER, <strong>1965</strong>93


For playback, your recorder output hasto be patched into your speech amplifier; andif you have no "output" jack on the recorder,you'll have to clip onto the recorder speakerleads. Your speech amplifier input probablyis of relatively high impedance, and thespeaker leads are relatively low. If you usea carbon mike, either type of recorder outputmight match your speech input fairly well.But if you use a crystal mike, neither methodis going to be too good and you may have towork up an audio transformer which willmore nearly match recorder output impedanceto transmitter mike input. Impedancemismatch which merely results in loweringgain is not much of a problem since you havegain to spare. But it's not good if the mismatchresults in distortion.Tape It Back. Probably the widest useof tape on the amateur bands is to play theother fellow's phone signal back to him asa check on his modulation or his CW signal.This is a big help to anyone trying to improvehis audio quality and perfecting themodulation of his rig or who is working onhis CW note.Realize,' though, that you can make theother fellow's signal sound bad if you havenot tested your equipment "on the air" withsomeone who will give you a critical report.All too often the major bug is too muchoutput from the recorder which causes over -modulation and distortion.Now a legal note: No message you hearon the air may be repeated to anyone towhom it is not "addressed." It is generallyinterpreted that everybody is addressed bybroadcast stations, amateur stations and stationstransmitting other types of material(time signals, weather, etc.) for the use ofthe general public.When playing back another station'ssignal, be sure you are properly identified.The FCC takes a dim view of improper identificationat any time but, when usinganother person's voice and call identification,you should be extra careful to identify yourselfbefore replaying the tape.When the Oscar gang has a satellite in thesky and you can copy it and the other fellowscan't, you do everybody a big favor by givingthen a listen. Further, only through recordingOscar's signals, including its telemetering,can an Oscarite derive all the informationthe satellite is putting out. Generally, standardtime signals are recorded simultaneouslyto aid in analyzing what Oscar is doing. Almosta dozen bits of information could bederived from Oscar Ill's signal, right downWhat's in the shack: Collins 325 -1 transmitter,Collins 312B-4 speaker control, Collins755 -1 receiver, Wollensak T -1580 tape recorderloaded with Kodak high- output audio tape.to the voltage available from its battery system!One fellow we know has a hobby of recordingworld -wide time and telemeteringsignals, navigation signals and such oddmentsand acquiring from the available sources theexplanations necessary to understand whatthese signals are saying.Make Your Own Code Tapes. Anothervaluable use of tape is the recording ofWI AW code practice transmissions to aid beginnersin learning the code. And if you'refairly clean with a key, you can lash up acode oscillator and make up "lessons" yourselfto loan to the struggling beginners.We have said nothing here about recordingmusical programs for replay, but thereis an important point to make: if anythingis worth recording, it is worth the highestfidelity you can get out of your recorder.And this means good tape. It costs but littlemore than junk tape with its multitude ofsplices, skewed slitting and uneven coating.But it pays you back a thousand times overin durability, tonal quality, freedom fromnoise, and loving kindness to recording heads!If you'd like an easy -to -read booklet onthe technology of tape and tape recording,one of the best is put out by EastmanKodak Company, Magnetic Products Department.Rochester, New York 14650,"Some Plain Talk from Kodak About SoundRecording Tape" is free for the asking. It'sa good book to read while your tape recorderis knocking out. "CQ CQ CQ DE WA2TDF"as mine does during the wee hours of thea.m. I'll be DX'ing you.94RADIO -<strong>TV</strong> EXPERIMENTER


SSupersensitive circuit pulls in distant AM stations. Has a double -tuned detector and two transistors to raise signal to speaker level .he crystal receiver has long been theI first project of electronics enthusiastsfor many reasons. The primary one is thatthe crystal radio utilizes the many principlesof electronics that are first gleaned from textbooks,but can be demonstrated and experimentedwith when you build this simple radio.The theory of antennas, detection anddemodulation of information- carrying electromagneticenergy, and energy transfer in aset of earphones, all that had previously beenonly theoretical discussion, suddenly becomesa reality. And .eal not in the sense oflaboratory meter deflections and readings. butin the reception of actual radio broadcastswhere tuning across the band becomes amuch more exiting way to witness thattheory in action than watching a meterneedle. One other big reason for the popularityof the crystal radio is cost -the priceis right.Extra Crystal and Two Transistors. Thiscrystal receiver uses two crystal diodes in apush -pull detector circuit that improves sensitivity.The detector circuit is very muchlike a full -wave rectifier which utilizes thepositive and negative sweeps of the incomingsignal. And, in addition, two transistorsamplify the audio output from the detector.A two -stage amplifier following a push -pulldetector stage gives results that will be morethan you would have expected. Several optionalcircuits and the inclusion of a few signaltaps in the circuit can further improvereception and increase the receiver's versatility.MFig. 1. Schematic diagram.Tuning circuits (L1 -C1 and L3-C2) provide push -pull action tocapture more signal than inregular detector. Signals fromdiodes D1, D2 are fed to volumecontrol Rl. Two -stagetransistor amplifier increasesaudio for earphone monitoring.Loudspeaker hookup (seeFig. 3) may be added to rig.ANTENNAWWIRE JUMPERBP3 - -BP402IN 34AwrRI<strong>10</strong>KR35K C4 R4IOm}150K<strong>10</strong>0Kye IS01 022N217PHONEJACKS1 J2SI+BP6 BP545 VDCOCTOBER -NOVEMBER. <strong>1965</strong>9:)


Coil is mounted above surfaceof panel with spacers or pieceof wood dowel. Note the tuningcapacitor at left; a solderlug is screwed in one threadedhole on frame. Lug receiveswire from control RI and BP6.8P3D2RI WITHPHONEL3 L2 SWITCH C3 R2 R3 J1 J2SIParts placement, underside ofpanel. Use wood or fiber boardfor panel, not metal. Scrapeenamel off ends of coil leadsbefore soldering. Battery, notshown, is external. It may bemounted in cabinet if desired.BPIBP2WIRE JUMPERCIC2Front -panel view showstuning and volumeknobs. Binding postsalong top edge are forconnecting battery, antennaand jumper. Usea red post for BP6, blackone for BPS. Other postsare white. Output i s obtainedat jacks J I and J2.Tuning the Antenna Coil. As shown inthe schematic diagram, Fig. 1, a split secondarycoil, with antenna coil between, istuned by a two -section variable capacitor. Ifa single- section variable capacitor is addedin the antenna circuit, Fig. 2, the antennacoil can be tuned to obtain both improvedsensitivity and selectivity. Using a long outdoorantenna and a good water pipe groundtakes further advantage of the added circuit.For frequencies below 850 kc, close thes.p.s.t switch to connect the .001 mfd. fixedcapacitor across the variable capacitor. Thiscombination is necessary to cover the entirebroadcast band.Speaker Listening. Adding an audio outputtransformer to the crystal receiver enablesyou to connect a speaker for room listeningto local stations. As shown in Fig. 3,the 2000 -ohm primary of transformer TI isconnected across the headphone jacks J1 andJ2. A small 4 -ohm speaker can then be con-96RADIO -<strong>TV</strong> EXPERIMENTER


PARTS LISTBI-4% -volt battery (Burgess F3 or equiv.)BM through BP6 -Six binding posts, 4 white,1 red, 1 blackCl, C2- Two -section variable condenser, eachsection 365 mmf. (Allied <strong>Radio</strong> 131521 orequiv.)C3, C4 -<strong>10</strong> mfd., 15 -volt miniature electrolyticcapacitorsC5* -365 mmf., single- section variable condenser(Allied 131524 or equiv.)C6* -.001 mfd. ceramic capacitorD1, D2 -1N34A germanium diodesJ1, J2 -Phone tip jacksL1, 12, 13- Antenna and input tank coils; No.32 enameled copper wire wound on <strong>11</strong>/7-in.coil form, 95 -30-95 turns, respectively (Seetext for winding instructions)01, 02 -2N217 PNP transistorsR1- <strong>10</strong>,000 -ohm potentiometer, logarithmictaper with s.p.s.t. attachable switch (Allied30M307 and 30M358, respectively)R2- 150,000 -ohm, 1/2-watt resistorR3- 5,000 -ohm, 1/2-watt resistorR4- <strong>10</strong>0,000 -ohm, 1/7 -watt resistor51- S.p.s.t. attachable switch (see R1 above)52*- S.p.s.t. toggle switchT1*-Audio output transformer; Primary: 2000ohms, secondary: 4 ohms (Allied 61G401 orequiv.)1 -1/4 -pound spool enameled magnet wireNo. 32 (Lafayette <strong>Radio</strong> 32G3074 or equiv.)1 -Coil form, 1,/2-inch diameter x 3 incheslongMisc.-Tuning and pointer knobs, Fahnestockclips, phone plug, composition board, hardwoodstock, machine screws, 4 -ohm speakers,lock washers, hex nuts, wood screws,solder lugs, insulated copper hookup wire,spaghetti, varnish, wood glue, solder, etc.Estimated cost for basic receiver: $8.00Estimated construction time: 6 hours*Optional componentsnected to the secondary. If you choose toadd the speaker listening option to the crystalreceiver, you can mount the transformer andspeaker in a small commercial enclosure orbuild a compact speaker box.Headphone Connections. Binding postsBP1 through BP6 actually tap the receivercircuit in significant places: BPI and BP2are the ground and antenna connectingpoints, respectively; BP3 and BP4 split thecircuit between the detector stage and thetwo- transistor amplifier; BP5 and BP6 arethe negative and positive input points for the41/2-volt battery power supply. Jacks J1 andJ2 are the audio output points where earphonesare connected for listening with twostages of amplification. When receiving apowerful signal that can be easily heard fromOCTOBER -NOVEMBER, <strong>1965</strong>Fig.JIPHONESJ?2. Optional hookup improves antenna.PRIMARY (ABOUT 2000 OHMS)SECONDARY 3 TO 8 OHMSCILI/\]PM SPKRFig. 3. How to add loudspeaker operation.the detector without any amplification, youcan connect the earphones right across bindingposts BP3 and BP6, without using thebattery at all! Remember the wire jumperacross BP3 and BP4. Disconnect it when youdon't want the detector output fed to theamplifier.AM Tuner For Hi -fi System. Perhapsyou have a hi -fi rig that, like many others,doesn't have an AM tuner. And now youfind that you miss some of the program farethat a few of those AM -only broadcastershave to offer. All you have to do to receiveAM on your rig is pick off the signal fromyour push -pull crystal detector at BP3 andBP6 and feed it to your hi -fi amplifier. Tomake the connection use a phono cable withone end terminated in two pin plugs for thereceiver binding posts.If you can use the detector stage of thecrystal receiver alone, you can do the samewith the amplifier stage and use it as a utilityamplifier. Connect the 41/2-volt batteryacross binding posts BP5 and BP6 and connectthe high impedance headset or transformerand speaker to jacks <strong>11</strong> and 12. Thenconnect the output from either microphoneor turntable (either crystal or ceramic cartridgepickup) to binding posts BP4 andBP6.Putting It Together. The crystal receivershown in the illustration was built as anexperimental project with the possibilityof the parts being used again elsewhere.But if you plan to use the receiver regularly,you can plan the construction, lay -(Continued on page 136)97


BFOmewe ma amBY STEVEN SUMMERMany hams and short -wave listeners arestill equipped with an old receiver thatmerely "tunes the short wave bands." Suchreceivers, along with many inexpensive, modernreceivers cannot receive code or sidebandsignals because they have no BFO -beat frequencyoscillator. Yet adding an externalBFO need pot be difficult or expensive. TheBFO described in this article is easy to buildand will cost less than $7. It can be addedto any superhet radio, AC -DC or transformeroperated, whose IF frequency is in the 455kc range.The remote BFO makes an ideal externalaccessory because it may be placed a few feetaway from the receiver. A single penlite cellfurnishes power to a transistorized Hartleyoscillator. To avoid coil winding, a miniaturetransistor IF transformer is used as thetank circuit- supplying all necessary tapsand windings. The pitch of the beat note isadjusted by Cl, a 17- picofarad variable capacitor.A 2N508 audio transistor is usedbecause it gives a high output.Construction. In order to simplify construction,a phenolic board sub -chassis wasused. All parts, except the battery and switchwere mounted on the <strong>11</strong>/2" x 21/2" perforatedphenolic board. The parts layout is shownin the photographs. There is a small bracketon the bottom of CI, to which the phenolicboard is attached with a (6 -32 x 1/4") ma-chine screw. Because the bushing on Cl connectsthe subassembly to ground, only twowires need to be connected to the board tocomplete the circuit. One wire goes to theoutput jack, J1, the other to the on -off switch.In order to make removal of the subassemblyfrom the aluminum box easy, these twowires are connected with "Flea Clips."An aluminum utility box was chosen tohouse the BFO because its removable topand bottom offer a maximum ease of access.Although the builder may desire four mountingfeet, it was found that three mountingfeet in a triangular arrangement preventedwobbling. In no case should the builder omitthe rubber feet because the screws holdingthe bottom plate will scratch the operatingtable or the top of the receiver. On the righthand side of the case a quarter inch hole wasdrilled so that the slug in the IF transformercould be adjusted with the case sealed up.No drilling location is given in the mechanicallayout, since location depends on placementof the IF transformer on the phenolicboard. The builder will have to determinethe exact location for himself. The outputjack, J1, is a phono jack of the single -holemounting variety. Actually, other connectorswould serve equally well, but the phono jackwas chosen because of its availability andlow cost. A smaller or larger IF transformercan be used if it is electrically similar.98RAD<strong>10</strong> -<strong>TV</strong> EXPERIMENTER


IIRI470Kr---TI455KCCIBI5V012N508CI I7PFBe sure to follow 01 connections, as shownin schematic above. Q1 mounts in transistorsocket seen in left photo. Wire completeboard before inserting in metal case.PARTSLISTB1- Penlite cell (Burgess type Z or equiv.)C1- 17- picofarad (17 -mmf.) variable capacitor(Hammariund HF -15 or equiv.lC2- .02 -mf., <strong>10</strong>0 -volt, ceramic disc capacitorJ1 -Phono jack ISwitchcraft 3501 FP or equiv.)01 -2N508 IGEIR1- 470,000 -ohm, 1/2-watt resistorR2- <strong>10</strong>0,000 -ohm, 1/2 -watt resistorR3- 680 -ohm, )/2 -waif resistorSI- S.p.s.t. slide switch (Continental -Wirt G723or equiv.)T1- Miniature transistor IF transformer for 455kc: primary- 25,000 ohms; Secondarir -600ohms, tapped pri. (Miller 2041, LafayetteMS -168A, Argonne AR60 or equiv.)1- Aluminum utility case, 4" x 4" x 2" (PremierAC -442 or equiv.)1- Battery holder for one penlite cellMisc. Phenolic board, hardware, flea clips, knob,wire, solder, etc.Board mounts vertically in case, held in bythe tuning capacitor. BFO signal is at <strong>11</strong>.Estimated Cost: $7.00Estimated construction time: 3 hoursUsing It. The BFO is easily connected tothe receiver. In fact, no actual physical connectionis needed. A one foot piece of insulatedhook -up wire, acting as a gimmickcapacitor, injects a sufficient signal whenwrapped around an IF transformer or theIF amplifier tube. If this arrangement couplesin too much BFO signal, try wrapping thehookup wire around the power cord or thedetector tube. It is important to feed intothe receiver a signal of sufficient volume, andnot higher. Too much BFO signal will causethe AVC to operate, making the receiver lesssensitive. A good test for proper volume isto use the BFO on a sideband signal. Withthe proper amount of BFO injection even aOCTOBER -NOVEMBER, <strong>1965</strong>strong signal can be easily demodulated. Ifthe BFO is heard on other nearby receivers,use microphone cable (the center lead only).Don't ground BFO case to AC -DC set.Being transistorized and battery operated,the BFO has no warm up drift and is notaffected by line voltage variations. The batterydrain is only 1/2 milliampere- hence,long battery life can be expected. It is electricallystable, and drifts only slightly withchanges in ambient temperature and mechanicalshock. This BFO is a valuable additionto any receiver that lacks one. Becauseof its electrical and mechanical simplicity,it can be constructed in a few hours, even byan inexperienced builder.99


DF for CBNow you can track down CB signals with a direction -finding CB loop antenna<strong>10</strong>0Are you tired of the jokers that jam thelocal group with dead carriers? Are youprepared to find a distressed motorist shoutingfor HELP when he hasn't the vaguestidea where he's at? Or maybe you'd like tosoup -up those dreary REACT meetings witha little fun, not to mention experience attracking down lost stations ". Whateveryour bent, whether it's revenge, concern foryour fellow man, or just a unique rescuedrill, you can track it down with the SignalHunter.While the Signal Hunter is yet anotherCB antenna there's a big difference. Unlikeother CB antennas which are designed to"boost" transmission the Signal Hunter is aDF (direction finding)antenna designed onlyfor receiving. Typical of DF's, the SignalHunter is a loop (about 12 inches in diameter)having sensitivity to the sides and a verysharp null towards the front and back.Putting It In Operation. The DF loop ismounted on a short shaft assembly havingtwo clips and a suction cup. With the carwindow half -lowered the clips fit over thetop of the glass and the suction cup holdsthe antenna against the window. The shaft,and therefore the antenna, can be rotatedby moving a pointer handle attached to theshaft. The antenna is equipped with a coaxialcable terminated in the standard PL-259 coax connector.The DF loop is tuned by adjusting thesmall variable capacitor at the top centerof the loop for maximum interstation noise.Then, with a walkie- talkie or another trans-ceiver located some distance away the DFpointer is aimed at the station and the capacitoris adjusted for minimum signal.The question might come to mind: "Exactlyhow does one know from which directionthe signal is received as the loopnulls towards the front and rear ?" Whilethe double null does exist in free space itdoes not exist when the loop is mounted ona vehicle: in practice the loop is slightlymore sensitive towards the side of the car(Continued on page 127)To attach the Signal Hunter two clips areplaced over the top of the window glassedge and the suction cup is pushed againstthe side glass. Mounting is extremely rigid-almost like a permanent auto installation.RADIO -<strong>TV</strong> EXPERIMENTER


PrecisionIF -RFOscillatorByAdolph A.Mangier'Stability and accuracy combine for excellent performance in a lhllme brew!Frequency stability and accuracy are featuresof this transistorized step frequencyRF -IF test oscillator, used to align radio RF-IF circuits. Accuracy far exceeds that of theusual continuously tuned oscillator; and frequencyshift due to battery aging and outputcircuit loading is negligible.Using only two inexpensive transistors anda Zener diode, the oscillator provides eightfixed frequencies from 200 KC to 4500 KC.As shown in the photographs the self -containedtest instrument is quite compact butnevertheless big in performance, truly ahand -held and handy alignment tool.Circuit Theory. The oscillator circuit isa Colpitts type connected in a common basecircuit using a 2N<strong>11</strong>79 high frequency transistor,Q1. This stage is followed by transistorQ2, a grounded collector stage, which provideslow output impedance and isolates theoscillator from the circuit being aligned.Battery B1, resistor R4, and Zener diodeCR I provide a regulated voltage for thetransistors to minimize frequency shift dueto battery aging. Resistors R I and R2, bypassedby capacitors C4 and C5 provide asmall forward bias to the emitter of Q1through resistor R3.Frequency selector switch S2 selects theindividual tank circuits of intermediate frequencytransformers T 1 through T4 andplaces them in the collector circuit of Q I.Capacitors C7, C8, and C9 lower the resonantfrequency of their tank circuits. Thesecapacitors may require selection dependingon the particular transformer used. CapacitorsCl and C2 form a capacitive voltagedivider across any selected tank and providesfeedback to sustain oscillations.RF voltage developed across C2 is fed tothe base of Q2 through blocking capacitorC3. Resistor R5 provides bias for transistorQ2. Resistor R6 is the load resistor of Q2.Voltage developed across R6 is fed to theoscillator output terminals through C6, R7,and R8.OCTOBER- NOVEMBER, <strong>1965</strong><strong>10</strong>1


R2 CI R3 01 R6 0 2 C6 81View of the oscillator with the chassis backremoved shows components mounted on theinsulation board which is then secured to 52.Side view of the unit shows grouping of IFcans held by the fabricated metal bracket.Carefully drill four holes in back half of thecabinet for tuning the cans with the back on.The peak to peak output voltage of theoscillator is better than <strong>10</strong>0,000 microvoltsat most switch positions. The outputs aremore than enough for receiver alignment.Output impedance of the oscillator is about700 ohms, somewhat less than the value ofR8. Resistor R8 may be replaced by a <strong>10</strong>00 -ohm miniature pot and output voltage takenfrom the arm of the pot.Construction Details. First, form a metalbracket to hold the group of IF transformersat the upper end of the chassis box as shownin the parts photographs. Allow clearance forthe output terminals under the bracket. Next,locate and drill holes for mounting switchesSi and S2.Most of the small parts are supported on a% x 2 1 x 3% -inch insulation board providedwith feedthru terminals which acts as a sub -chassis. Support the board above the switchas shown. By replacing the screws supportingthe switch wafer with longer ones removedfrom a discarded wafer switch, you canmount the board directly on the switch.Mount parts on both sides of the board. Installthe transistors last and use long nosepliers as a heat sink when soldering thetransistors and other miniature parts.Intermediate Bench Testing. Beforefinal installation, bench test the wired sub -chassis board using clip leads to connect thebattery and a tank circuit. Check each transformercoil for oscillation and identify theadjustable ferrite shell core belonging to eachcoil.For these tests, use a broadcast or all -bandradio to pick up the generated signal. Asan example, for the 200 KC frequency, setthe radio to a broadcast station falling on oneof the harmonics of 200 KC (i.e. 600, 800,<strong>10</strong>0 KC, etc.). Connect a short wire toresistor R7 and place it near the loop antennaof the radio or connect it to the antennaterminal. Connect the lower end of R8 toearth ground. Adjust each core of the transformersuntil a heterodyne or whistle isheard on the broadcast station. Label eachtransformer, identifying terminal pairs, corelocation, and IF frequency. This will eliminatemuch confusion when wiring rotaryswitch S2 and when calibrating the completedinstrument.During these bench tests, check to seeif the values of C7, C8. and C9 require alterationdepending on the particular transformerused. Increase the value to lower thefrequency and vice versa. Screw the coresinward almost to the limit stop and use theleast amount of shunt capacitance to obtainthe desired frequency.On T4, which is rather heavily shuntedby C7, try adjusting each coil if oscillationscannot be brought down to 1650 KC. Ifneither coil will oscillate at 1650 KC, deletethis frequency and replace it with anotherhigher frequency of your choice such as2000 KC. Excessive capacitive shunting ofa coil prevents oscillations due to increasedcircuit losses.If no radio receiver or other means ofchecking the 4500 KC frequency is available.you can delete T4 and replace it witha lower frequency transformer of yourchoice. <strong>Radio</strong> antenna and oscillator coilsmay be used as tank circuits.Complete Construction. The transistorsused were those on hand, but most any RFtransistor may be used. Since transistor leakagecurrents and gains vary widely, thevalue of resistor RS may have to be ascertained.To check this, connect a milliameterin series with R6. Use a value of R5 toobtain a current of 500 microamperes in R6.Before installing and wiring the tested<strong>10</strong>2RADIO -<strong>TV</strong> EXPERIMENTER


circuit board, solder six -inch lengths of No.20 solid insulated wire to the lugs on S2 forlater connection to the transformers. Labeleach wire accordingly. Then, install all componentsin the box and complete the wiring.Allow clearances for the slip -on bottom ofthe box. Locate and drill holes in the sidesof the bottom half to permit screwdriveradjustment of the transformers. Finally,label the panel using decals or other lettering.Calibration Procedure. To calibrate theoscillator, run a wire from the RF outputterminal to the radio antenna terminal ornear the loop antenna of the broadcast bandradio. Connect the ground terminal to anearth ground. Set S2 to 200 KC and tune ina radio station transmitting at 600 KC orany harmonic of 200 KC. Refer to White's<strong>Radio</strong> Log for station frequencies.Adjust the appropriate tuning core intransformer T1 until a whistle is heard whichrises and falls in pitch as you tune the oscillatorthrough zero beat with the station.PARTS LIST81 -9 -volt battery (Burgess 21.16 or equiv.)BP1, BP2 -Red and black 6 -way binding postsCl, C9- 50 -mmf., <strong>10</strong> % mica capacitorC2- 350 -mmf., <strong>10</strong> % mica capacitorC3- .001 -mfd., <strong>10</strong> % mica capacitorC4, C5- .01 -mfd., 50 -volt disc capacitorsC6- .01 -mfd., 600 -volt disc capacitorC7- 600 -mmf., <strong>10</strong> % mica capacitorC8- 200 -mmf., <strong>10</strong> % mica capacitorCR1 -Zener diode, 3.8 volts nominal(Motorola 1N3823A or equiv.)Q1- 2N<strong>11</strong>79 transistor02- 2N1379 transistorR1- 30,000 -ohm, 1/2 -watt, <strong>10</strong> % resistorR2, R3- 3,000 -ohm, I/2 -watt, <strong>10</strong> % resistorsR4- 2,000 -ohm, % -watt, <strong>10</strong> % resistorR5- 450,000 -ohm, 1/2 -watt, <strong>10</strong> % resistorR6, R8- 1,000 -ohm, 1/2-watt, <strong>10</strong> % resistorsR7- 2,000 -ohm, 1/2-watt, <strong>10</strong> % resistor51- S.p.s.t. slide switch52- Single -pole, <strong>11</strong>- position rotary switchICentralab <strong>10</strong>01 or equiv.)T1 -262KC miniature IF transformer(Miller 12H1, Stancor RTC8638, or equiv.)72 -455KC miniature IF transformer(Miller 12C7, Stancor RTC8675, or equiv.)T3- 1500KC miniature IF transformer(Miller 13W1, Stancor RTC8686, or equiv.)74 -4.5MC miniature IF transformer(Miller 6203, Stancor RTC8545, or equiv.)1-51/4" x 3" x 2 ye" aluminum chassis box(Bud CU2<strong>10</strong>6A or equiv.)Misc. -Indicator knob, insulator sub -chassisboard, No. 22 solid insulated hookup wire,hardware, panel markings, solder, etc.Estimated cost: $22.00Estimated construction and calibration time:5 hoursOCTOBER-NOVt:IDIBt:R, <strong>1965</strong>Large indicator knob with pointer and frontpanel decal markings allow for quick andeasy selection of the desired fixed frequency.Adjust the core to obtain zero beat during abreak in the station's transmission. Use anon -metal alignment screwdriver during adjustmentwith the bottom of the box in place.Check to see that the other harmonics arespaced by 200 KC. If not, screw the corein or out to decrease the spacing between thereceived harmonics. On blank radio channels,the signal can be recognized by a hissingsound.At switch position 2 (262 KC), zero beatwith a station transmitting at 13<strong>10</strong> KC (fifthharmonic of 262 KC). At 455 KC, zerobeat with a station at 9<strong>10</strong> KC (second harmonicof 455 KC). At 465 KC, zero beatwith a station at 930 KC (second harmonicof 465 KC). Zero beat the 600 KC frequencywith a station at 600 or 1200 KC, whicheveris available. The 1500 and 1650 KCfrequencies are zero -beat with stations atthose respective frequencies. All of theabove frequencies, when set to zero beat, willbe quite accurate because the station frequenciesare extremely accurate.The 4500 KC frequency cannot be ad-justed to high accuracy unless you have ahigh frequency receiver and a <strong>10</strong>0 KC<strong>10</strong>3


1 200KCT 72 :74S2 FREQ S2 FREQ5 600KC2 262KC 6 1500KC3 455KC 7 1650KC4 465KC 8 4.5MCR5-450K2K =CRIR63.8V IK.01 R7-2K+R81KBP2RFOUTaBPIFrequency determining tank circuits are selectedby switch 52 and passed to collector of 01.<strong>10</strong>4crystal oscillator available. If these are available,adjust the frequency to zero beat withthe 45th harmonic of the <strong>10</strong>0 KC crystaloscillator as received by the receiver.1f acrystal standard is not available, simply adjustthe frequency to nominal accuracy asindicated by the receiver dial.At each of these frequencies, listen carefullyto a steady beatnote of about <strong>10</strong>00 cps.It should be steady and clear. If the beatnotewavers, the cause may be due to an erratictransistor, a cold soldered joint, poorgrounds, or oscillations on the verge of dyingout. If you replace a transistor, recheck thecalibration.Going to Work. When using the oscillator,follow the usual alignment proceduresdetailed in many publications and serviceliterature. Since the oscillator is not modulated,connect a V<strong>TV</strong>M or other high impedanceDC voltmeter, set to a low range,to the receiver's second detector diode loadresistor to indicate alignment. Use onlyenough signal to provide a convenient indicationon the meter.Modulation was omitted in this oscillatorbecause direct modulation of any transistoroscillator also introduces frequency modulationwhich is not desirable for the intendedpurpose of the oscillator.The accurate IF frequencies obtainablefrom the oscillator may be used as markerswhen aligning IF amplifiers with a sweeposcillator. This will accurately identify thecenter frequency on the scope display.Replace battery 131 when its terminalvoltage, with S 1 on, drops to 5.75 volts orwhen the voltage across CR1 drops belowthe Zener voltage.Some Notes From the Lab. Several testswere performed for the purpose of knowingjust what could be expected from the oscillator.One test was determining the fre-(Continued on page 130)RADIO -<strong>TV</strong> EXPERIMENTER


Volume 44, Part 2WHITE'SAn up -to -date Broadcasting Directory of NorthAmerican AM, FM and <strong>TV</strong> Stations. Including aSpecial Section on World -Wide Short -Wave StationsTThis is the second part of White's <strong>Radio</strong>Log, now published in three parts twiceeach year. This format permits the Editors ofRADIO -<strong>TV</strong> EXPERIMENTER to offer to itsreaders two complete volumes of White's<strong>Radio</strong> Log each year, while increasing thescope of the Log and inserting stationchanges as they occur.In this issue of White's <strong>Radio</strong> Log wehave included the following listings: U. S.AM Stations by Location, U. S. FM Stationsby States, Canadian AM Stations by Location,Canadian FM Stations by Location, andthe expanded, up -to -date World -Wide Short-* Wave Section.In the December /January issue of RADIO -<strong>TV</strong> EXPERIMENTER, the Log will contain thefollowing listings: U. S. AM Stations by CallLetters, U. S. FM Stations by Call Letters,Canadian AM Stations by Call Letters, CanadianFM Stations by Call Letters, and theexpanded World -Wide Short -Wave Section.In the event you missed any part of theLog published earlier this year, you will havea complete copy of White's <strong>Radio</strong> Log bycollecting any three consecutive issues ofRADIO -<strong>TV</strong> EXPERIMENTER during 1964. Thethree consecutive issues comprise a completevolume of White's <strong>Radio</strong> Log that offerscomplete listings with last minute stationchange data that can not be offered in anyother magazine or book. If you are a broadcastband DX'er, FM station logger, like tophotograph distant <strong>TV</strong> test patterns, or tunethe short -wave bands, you will find White's<strong>Radio</strong> Log an unbeatable reference.QUICK REFERENCE INDEXU.S. AM Stations by Location <strong>10</strong>8U.S. FM Stations by States <strong>11</strong>7Canadian AM Stations by Location 122Canadian FM Stations by Location 123World -Wide Short -Wave Stations 123OCTOBER -NOVEMBER, <strong>1965</strong> <strong>10</strong>7


wsasu2,7,517®<strong>11</strong>o@Location C.L. KC.Abbeville, Ala.Abbeville, La.Abbeville, S.C.Aberdeen. Md.Aberdeen, Miss.Aberdeen. S.Dak.WARI 1480KROF 960WABV 1590WAMD 970WMPA 1240KSDN 930KXRO 1320Aberdeen, Wash. KBKW 1450Abilene, Tex, KRBC 1470KCAD 1560KNIT 1280Abilene. KansasAbingdon, Va.Ada. Okla.Adel, Ga.Adrian, Mich.Agana, GuamAguadilla, P.R.Ahoskie, N.C.Aiken. S.C.KWKC 1340KABI 250.WBB1 1230KADA 1230WAAG 1470WABJ 1490KUAM 6<strong>10</strong>WABA 850WGRF 1340WRCS 970WAKN 990WLOW 1300Altkin, Minn. KKIN <strong>10</strong>00Akron, Ohio WAKR 1590WSLR 1350WCUE <strong>11</strong>50W H LO 640Alamogordo. N.M. KALG 1230KRAC 1270Alamo Heights, Tex.KDRY <strong>11</strong><strong>10</strong>Alamosa.Colo. KGIW 1450Albany. Ga. WALG 1590WFAZ 960WLYB 1250WGPC 1450WJAZ 960Albany, Ky. WANY 1390Albany. Minn. KASM <strong>11</strong>50Albany, N.Y. WABY 1400WOKO 1460WPTR 1540WROW 590Albany, Oreg. KWIL 790KRKT 990Albemarle, N.C. WABZ <strong>10</strong><strong>10</strong>WZKY 1580Albert Lea. Minn. KATE 1450Albertville, Ala. WAVU 630Albion, Mich. WALM 1260Albuquerque. N.M. KABQQ 1950KOEF <strong>11</strong>50KGGM 6<strong>10</strong>KHIP 1520KOB 770KGEO 920KARA 13<strong>10</strong>KVOD 730KLOS 1580KRZY 1450Alcoa. Tenn. WEAG 1470Alexander City. Ala.WRFS <strong>10</strong>50Alexandria. La. KALB 580KDBS 14<strong>10</strong>KSYL 970Alexandria. Minn. KX RA 1490Alexandria. Ve. WPIK 730Algona, Iowa KLGA 1600Aliee, Tex. KOPY <strong>10</strong>70Alisal. Cal KRSA 1570Allentown, Pa. WHO' 1600WAEB 790W KAP 1320Alliance, Nebr.Alliance. OhioAlisal. Calif.Alma. Ga.Alma. Mich.Alpena Township.WSAN 1470K COW 1400WFAH 13<strong>10</strong>KRSA 1570WCQS 1400WFYC 1280Mich.WATZ 1450Alpine. Tex. KVLF 1240Altavista, Va, WKDE 1280Location C.L. Kc.Alton, Ill. WOKZ 1570Alpena. Man. CFAM 1290Altoona, Pa. WFBG 1290WRTA 1240WVAM 1430Alturas, Calif. KCNO 570Altus, Okla. KWHW 1450Alva, Okla. KALV 1430Amarillo, Tex. KBUY <strong>10</strong><strong>10</strong>KFDA 1440KGNC 7<strong>10</strong>K1X2 940KBAY 1360KZIP 13<strong>10</strong>Ambridge, Pa. WMBA 1460Americus, Ga. WDEC 1290WISK 1390Ames. Iowa KASI 1430W01 640Amherst, Mass. WTTT 1430Amherst. N.S. CKDH 1400Amherst, N.Y. WUFO <strong>10</strong>80Ample, La. WABL 1570Amory. Bliss. WAMY 1580Amsterdam. N.Y. WAFS 1570WCSS 1490Anaconda, Mont. KANA 580Anacortes, Wash. KAGT 1340Anaheim, Calif. KEZY <strong>11</strong>90Anchorage, Alaska KBYR 1270KFQD 730KENT 550Andalusia. Ala. WCTA 920Anderson, Cal. KMRE 1580Anderson, Ind. WHUT 1470W H B U 1240Anderson, S.C. WAIM 1290WANS 1280Andrews, Tex. KACT 1360Annapolis. Md. WANN <strong>11</strong>90WYRE 8<strong>10</strong>WNAV 1430Ann Arbor. Mich. WAAM 1600WPAG <strong>10</strong>50Anna. Ill. WRAJ 1440Anniston, Ala. WANA 1490WONG 1450WHMA 1390Anoka, Minn. KANO 1470Ansonia, Conn. WADS 690Antieo, Wis. WATK 900Apollo, Pa. WAVL 9<strong>10</strong>Apopka, Fla. WTLN 1520Apple Valley. Cal. KAVR 960Appleton, Wis. WAPL 1570WHBY 1230Aguadilla, P. R. WUNA 1340Arab, Als. WRAB 1380Arcadia, Fla. WAPG 1480Arcata. Calif. KENL 1340KATA 1340Ardmore, Okla. KVSO 1240Arecibo, P.R. WCMN 1280WMIA <strong>10</strong>70WNIK 1230Areentia, Nfld. VOUS 1480Arkadelphia, Ark. KVRC 1240Arkan. City. Kans. KSOK 1280Arlington. Fla. WQTY 1220Arlington, Ve. WAVA 780WEAM 1390Artesia, N.M. KSVP 990Arvada. Colo. KDAB 1550Arroyo Grande, Calif.KCJH 1280Ashburn. Ga. W M ES 1570Asbury Park. N.J. WJLK 1440Asbury Park - Eatontown. N. J.WHIG 14<strong>10</strong>Asheboro, N.C. WGWR 1260Asheville. N.C. WISE 13<strong>10</strong>WLOS 1380WSKY 1230WWNC 570Ashland. Ky. WCMI 1340WTCR 1420Ashland. Ohio WNCO 1340Ashland. Oreg. KWIN 1400Ashland. Va.Ashland. Wis.Ashtabula, OhioU. Se AM Stations by LocationKRVC 1350WIVE 1430WATW 1400WAQI 1600WREO 970Aspen. Colo. KSNO 1260Astoria. Oree. KAST 1370Every effort has been made to ensure accuracy of theinformation listed in this publication, but absoluteaccuracy is not guaranteed and of course, only informationavailable up to press -time could be included.Copyright <strong>1965</strong> by Science 8 Mechanics PublishingCo., a subsidiary of Davis Publications, Inc.,505 Park Avenue, New York, New York <strong>10</strong>022.Location C.L. Kc.Atchison. Kans.Athens, Ga.Athens. OhioAthens. Tenn.Athens. Tea.Atlanta, Ga.KVAS 1230KARE 1470WGAU 1340WOOL 1470W KAC <strong>10</strong>80WRFC 960KQX I 790WATH 970WOUB 1340WLAR 1450KBUD 141 oWPLO 59 oWAKE 134 oWAOK 138 oWERD 86 oWGKA 1600WGST 92 oWIIN 97 oW QX I 79 oWSB 750WYZE 1480AtlantaDecatur, Ga.WGUN <strong>10</strong><strong>10</strong>Atlanta. Tex. KALT 900Atlantic, lows KJAN 1220Atlantic Beach, Fla. W KTX 1600Atlantic City. N.J. WFPG 1450WLDB 1490WMID 1340Atmore. Ala. WATM 1590Attleboro, Mass. WARA 1320Auburn, Ala. WAUD 1230Auburn. Calif. KAHI 950Auburn, N.Y. WM80 1940WAUB 1590Auburn, Wash. KASY 1220Auburndale, Fla. WTWB 1570Auburndale, Wla. WLBL 930Augusta, Ga. WAUG <strong>10</strong>50WBBQ 1340WBIA 1230WGAC 580Augusta, MaineAurora, Colo.Aurora, III.Aurora, Mo.Austin, Minn.Austin. Tax.WRDW 1480WRDO 1400WFAU 1340KOSI 1430WMRO 1280W K K D 1580KSWM 940KAUS 1480KQAQ 970KNOW 1490KHFIKTBCKOKEKVETAvalon. Cal. KBIGAron Park, Fla. WAVPAvondale Estates, Ga.WAVOAztec, N. Mex. KHAPBabylon, N.Y, WBABWGLIBad Axe, Mich. WLEWBainbridge. Ga. WMGRWAZABaker, Mont. KFLNBaker. Oreg. KBKRBakersfield, Calif. KAFYKBISKERNKGEEKUZZKLYDKWACKPMCBellingham. Wash. KPUGBaldwinsville, N.Y. WSENBallinger, Tea.Baltimore, Md.KRUNWBALWBMDWCAOWCBM970590137019007401390142013401440129013409301360960149055097014<strong>10</strong>1230800135014901560<strong>11</strong>70<strong>10</strong>501400<strong>10</strong>90750600680WEBB 1360WFBR 1300WITH 1230WSID <strong>10</strong><strong>10</strong>W W I N 1400Bamberg, S.C. WWBD 790Bangor, Maine WABI 9<strong>10</strong>WGUY 1250WLBZ 620Banning. Calif. KPAS 1490Barboursville. Ky. WBVL 950Barnesboro, Pa. WNCC 950Barnwell. S.C. WBAW 740Barre, Vt. WSNO 1450Barstow. Calif. KWIC 1230KIOT 13<strong>10</strong>Bartlesville. Okla. KWON 1400Bartow. Fla. WBAR 1460Bassett, Va. WODY 900Bastrop. La KTRY 730KVOB 1340Batavia, N.Y. WBTA 1490Batesbure, S.C. WBLR 1430Batesville. Ark, KBTA 1340Batesville, Miss, WBLE 1290Location C.L. Kc.Bath, Maine WJTO 730Bath, N.Y. WFSR 1580Baten Rouge, La. WAIL 1460WLUX 1550WYNK 1381)WIBR 1300WJBO <strong>11</strong>50WLCS 9<strong>10</strong>W X O K 1260Battle Creek, M ieh. W BC K 930W K F R 1400WVOC 1500Baxley, Ga. WHAB 1260Bay City, Mich. WBCM 1440WXOX 1250Bay City. Tex. KIOX 1270Bay Minette, Ala. WBCA <strong>11</strong>50Bayamon, P.R. WBPR 1600WSRJ 1560Baytown, TeX, K W BA 1360Beacon. N.Y. WBNR 1260Beardstown. Ill. W RMS 790Beatrice, Nebr. KWBE 1450beaufort, N.C. WBMA 1400Beaufort, S.C. WBEU 960WSIB 1490Beaument, Tex. KLVI 560KPYC 1450KTRM 990Beaver Dam, Wis. WBEV 1430Beaver Falls, Pa. WBVP 1230Beckley. W. Va. WJLS 560W W N R 620Bedford, Ind. WBIW 1340Bedford. Pa- WBFD 13<strong>10</strong>Bedford. Va. WBLT 1350Beeville. Tex. KIBL 1490Bel Air. Md. WVCB 1520Bolen, N.Mex. KARS 860Belfast. Me. W BM E 1230Belgrade. Mont. KGVW 630Bellaire, Ohio WOMP 1290Bellelontaine, OhioWOHP 1390Bellefonte, Pa. WBLF 1330Bell Fourche. S.Dak. KBFS 1450Belle Glade, Fla. WSWN 900Belleville, Ont. CJBQ 800Belleville. Ill, W I8V 1260Bellevue. Wash. KF KF 1330KBVU 1540Bellingham, Wash. KPUG <strong>11</strong>70KGMI 790KOQT 1550Bellingham- Ferndale. Wash.KENY 930Belmont. N.C. WCGC 1270Beloit, Wis. WGEZ 1490WBEL 1380Belton, S.C. WHPB 1390Belton. Tex. KTON 940Belzoni, Miss. WELZ 1460Bemidji, Minn. KBUN 1450Bend. Oreg. KBND <strong>11</strong><strong>10</strong>KGRL 940Bennetsville, S.C. WBSC 1550Bennington. Vt. WBTN 1370Benson. Minn. KBMO 1290Benson, N.C. WPYB 1580Benton, Ark. KBBA 690KGKO 1600Benton, Ky. WCBL 1290Benton Harbor -St. Joseph, Mich.WHFB <strong>10</strong>60Berkeley, Calif. KPAT 1400Berkeley Springs. W.Va.WCST <strong>10</strong><strong>10</strong>Berlin, N.H. WMOU 1230WBRL 1400Berry Hill, Tenn. WVOL 1470Berryville, Ark. KTHS 1480Berwick, Pa. WBRX 1280Bessemer. Ala, WYAM 1450Bethesda, Md. WUST <strong>11</strong>20Bethlehem. Ps. WGPA 1<strong>10</strong>0Beverly, Mass. WMLO 1570Biddeford. Maine WIDE 1400Big Bear Lake. Cal.KTOT <strong>10</strong>50Big Delta, Alaska WXLL 980Big Lake. Tex. KBLT 1290Big Rapids. Mich. WBRN 1460Bis Sprg., Tex. KBST 1490KHEM 1270KBYG 1400Big Stone Gap, Va. WLSD 1220Bijou, Cal. KOWL 1490Biloxi, Miss. WLOX 1490WVMI 570Billings, Mont, KBMY 1240KOHL 790KOOK 970KOYN 9<strong>10</strong>KURL 730Binghamton. N.Y. WINR 680W KOP 1360WNBF 1290Birmingham, Ale. WAPI <strong>10</strong>70<strong>10</strong>8RADIO -<strong>TV</strong> EXPERIMENTER


Location C.L. Kt.LocationC.L.KC.Location C.L. Kc.Location C.L. Kc.WBHM 1550WBRC 960WCRT 1260WAQY 1220WENN 1320WA<strong>TV</strong> 900WSGN 6<strong>10</strong>WYDE 850W V O K 690B isbee. Ariz. KSUN 1230Bishop. Calif. KI BS 1230Bishopville. S.C. WAGS 1380Bismarck. N.Dak. KFYR 550KBMR 1350Bismarck- Mandan. N.Dak.1(130M 1270Black Mountain. N.C.WBMT 1350WFGW <strong>10</strong><strong>10</strong>Black River Falls, Wis.WWIS 1260Blackfoot. Idaho KBLI 690Blackshear, Ga. WBSG 1350B lackstone, Va. WKLV 1440Blackwell, Okla. KLTR 1580Blaine, Wash. KARI 550Blakely, Ga. WBBK 1260Blanding, Utah KUTA 790Bloomington, Ill. WJBC 1230Bloomington, Ind. WITS 1370Bloomsburg. Pa. WCNR 930WHLM 550Blountstown, Fla. WKMK 1370Blue Earth, Minn. KBEW 1560Bluefield, W.Va. WHIS 1440WKOY 1240B lythe. Calli. KYOR 1450Blytheville, Ark. KLCN 9<strong>10</strong>Boaz, Ala. WBSA 1300Boca Raton. Fla. WSBR 740Bogalusa, La. WI KC 1490WBOX 920Boise, Idaho KATN <strong>10</strong><strong>10</strong>KBOl 670KEST 790KGEM <strong>11</strong>40KIDO 630Bolivar. Mo.Bolivar. Tenn.Bonham. Tex.Boone, IowaBoone. N.C.Boonville, Ind,Boonville, Mo.Booneville, Miss.Boonville, N.Y.Borger. Tex.KYME 740KBLR 1550WBOL 1560KFYN 1420KFGQ 1260KWBG 1590WATA 1450WBNL 1540KWRT 1370WBIP 1400WBRV 900KHUZ 1490KBBB 1600B oston. Mass. W BZ <strong>10</strong>30WCOP <strong>11</strong>50WILD <strong>10</strong>90WNAC 680WEZE 1260WEEI 590WHDH 850WMEX 15<strong>10</strong>WORL 950Boulder, Colo. KBOL 1490KDEY 1360Bowie. Tex. KBAN 14<strong>10</strong>Bowling Green. Ky. W KCT 930WBGN 1340WLBJ 14<strong>10</strong>Bowl. Green. Ohio WMGS 730Boynton Beach, Fla.WZZ1 15<strong>10</strong>Bozeman, Mont. KXXL 1450KBMN 1230Bradbury Hats., Md.WPGC 1580Braddock. Pa. WLOA 1550Braddoeks Heights, Md.WMHI 1370Bradenton. Fla. WTRL 1490WBRD 1420Bradford, Pa. WESB 1490Brady. Tex. KNEL 1490Brainerd, Minn. KLIZ 1380KVBR 1340Branson, Mo. KBHM 1220Brantford. Ont, CKPC 1380Brattleboro. VL WTSA 1450WKVT 1490Brawley, Calif, KROP 1300Brazil, Ind. WWCM 1380Breckenridge, Minn.KBMW 1450Breckenridge, Tex. KSTB 1430Bremen, Ga. WWCC 1440Bremerton, Wash. KBRO 1490Brenham, Tex. K W H 1 1280Brevard. N.C. WPNF 1240Brewster, N.Y. WBRW 15<strong>10</strong>Brewton. Ala.Bridgeport, AleW EB1 1240WBTS 1480Bridgeport. Conn. WICC 600WNAB 1450Bridgeton, N.J. WSNJ 1240Brigham CIty,Utah (BUM 800Brighton, Colo. KBRN 800Brinkley, Ark. KBRI 1570Bristol. Conn. WBIS 1440Bristol. Tann. WOPI 1490WKYE 1550Bristol. Va. WCYB 690W F H G 980Brockton, Mass. WBET 460WOKW 4<strong>10</strong>Brockville, Ont. CFiR 450Broken Bow. Nebr. KCNI 280Brookfield. Conn. WINE 940Brookfield. Mo. (OHM 470Brookhaven, Miss. WCHJ 470WIMB 340Brookings, Oreg. KUHY 9<strong>10</strong>Brookings. S.Dak. KBRK 430Brookline. Mass. WBOS 600Brookneal, Va. WLLI 230Brooksville, Fla. WWJB 450Brownfield, Tex. KKUB 300Brownsville, Tenn. WBHT 520Brownsville, Tex, KBOR 600Brownwood. Tex. KBWD 380 .K EAN 240Brunswick. Ga. WGIG 440WMOG 1490WYNR 790Brunswick, Maine WCME 900Bryan. Ohio WBNO 1520Bryan, Tex. KORA 1240WTAW <strong>11</strong>50Buckhannon, W.Va. WBUC 1460Bucyrus, Ohio WBCO 1540Buffalo. N.Y. WBEN 930WYSL 1400WEBR 970WGR 550WKBW 1520WWOL <strong>11</strong>20Buffalo. Wyo. KBBS 1450Buford, Ga. WDYX 1460Burbank, Calif. KBLA 1500Burley, Idaho KBAR 1230Burlington. Iowa KBUR 1490KBIA <strong>11</strong>50Burlington. N.C. WBBB 920WBAG <strong>11</strong>50Burlington, Vt. W DOT 1400WJOY 1230Burnett. Tex.Burns. Oreg.Butler, Ala.Butler, Mo.Butler, Pa.Butte, Mont.Cadillac, Mich.Caguas, P.R.Cairo, Ga.Cairo. Ill.Calais, MaineCaldwell, IdahoCalera. Ala.Calexico, Calif.Calhoun. Ga.Camas. Wash.Cambridge, Md.Cambridge, Mass.Cambridge, OhioCamden, Ark.Camden, N.J.Camden, S. C.Camden. Tenn.Cameron, Tex.Camilla. Ga.Campbell. OhioCampbellsville,Ky,Canandaigua, N.Y.Cannon City. Colo.Canonsburg, Pa.Canton, Ga.Canton, <strong>11</strong>1.Canton. Miss.Canton, N.C.Canton. OhioWVMT 620KTSL 1340KRNS 1230WPRN 1240KMAM 1530WBUT <strong>10</strong>50WISR 680KBOW 550KXLF 1370WATT 1240WNEL 1430WVJP <strong>11</strong><strong>10</strong>WGRA 790W KRO 1490WODY 1230KCID 1490KBGN 9<strong>10</strong>WBYE 1370KICO 1490WCGA 900KVAN 1480WCEM 1240WYHR 740WILE 1270KAMD 9<strong>10</strong>KJWH 1450WCAM 13<strong>10</strong>WKDN 800WACA 1590WFWL 1220KMIL 1330WCLB 1220WHOT 1330WTCO 1450WCGR 1550KRLN 1400WARO 540WCHK 1290WBYS 1560WMGO 1370WWIT 970WCNS 900WHOF <strong>10</strong>60WHBC 1480WINW 1520Canyon. Tex. KCAN 1550Cape Girardeau. Mo. KFVS 960KZYM 1220KGMO 1550Carbondale, III. WCIL <strong>10</strong>20Carbondale, Pa, WCDL 1440Caribou. Maine WFST 600Carlisle, Pa. WHYL 960W <strong>10</strong>0 <strong>10</strong>00Carlsbad. N.Mex. KAVE 1240KPBM 740Carmel. Calif. KRML 14<strong>10</strong>Carmi, III. WROY 1460Carnegie, Pa. WZUM 1590Caro. Mich. WKYO 1360Carolina. P. R. WVOZ 1400Carrington, N.Dak. KDAK 1600Carrizo Springs. Tex.KBEN 1450Carroll. Iowa KCIM 1380Carrollton, Ala. WRAG 590Carrollton. Ga. WLBB 1<strong>10</strong>0Carrollton. Mo. KAOL 1430Carson City. Nev. KPTL 1300Cartersville. Ga. WBHF 1450WKRW 1270Carthage. Ill. WCAZ 990Carthage, Mo. KDMO 1490Carthage. Miss. WECP 1480Carthage. Tenn. W R KM 1350Carthage, Tex. KGAS 1590Caruthersvllle, Mo. KCRV 1370Casa Grande, Ariz. (PIN 1260Casey. Ill. WKZI 800Casper. Wyo, KTWO 1470KATI 1400Cathedral City. Calif.KVOC 1230KWXY 1340Cayce. S.C. WCAY 620Cedar City. Utah KSUB 590Cedar Falls, Iowa (CFI 1250Cedar Rapids. lows KCRG 1600KLWW 1450WMT 600KHAK 1360Cedartown. Ga. WGAA 1340Celina, Ohio WCSM 1350Center. Ala. WEIS 990WAGC 1550Center, Tex, KDET 930Centerville. Iowa KCOG 1400Centerville. Ind. WHON 930Centreville, Miss, WLBS 1580Centerville. Tenn. W H LP 1570Centerville. Utah KBBC 1600Central City, Ky. W N ES <strong>10</strong>50WMTA 1380Centralia, Ill. WCNT 12<strong>10</strong>Centralia & Chehalis. Wash.KELA 1470Centerville. Ala. WBIB 1590Ceres. Calif. KLOC 920Chadburn, N.C. WVOE 1590Chadron, Nebr. KCSR 6<strong>10</strong>Chambersburg. Pa. WCHA 800WCBG 1590Champaign. Ill. WOWS 1400Chanute, Kans, KCRB 1460Chapel Hill, N.C. WCHL 1360Charleroi. Pa. WESA 940Charles City. Iowa KCHA 1580Charleston. Ill. WEIC 1270Charleston, Mo. KCH R 1350Charleston. S.C. WCSC 1390WOKE 1340WPAL 730WQSN 1450WTMA 1250Charleston, W.Va. WCAW 680WCHS 580WGKV 1490WKAZ 950WTIP 1240WXVA 1550Charlotte. Mich. WCER 1390Charlotte. N.C. WBT 1<strong>10</strong>0WAYS 6<strong>10</strong>WGIV 1600WKTC 13<strong>10</strong>WSOC 930WIST 1240WWOK 1480WRPL 1540Charlotte Amalie, V.I.WBNB <strong>10</strong>00WSTA 1340WBNB <strong>10</strong>00Charlottesville. Va. W CH V 1260WELK <strong>10</strong><strong>10</strong>WINA 1400Chase City. Va. WMEK 980Chattahoochee. Fla.WSBP 1580Chattanooga, Tenn. WMOC 1450WAPO <strong>11</strong>50WDEF 070WOOD 13<strong>10</strong>WDXB 1490WNOO 1260Cheboygan, Mich. WCBY 1240Cheektowaga, N.Y. WNIA 1230Chehalis- Centralia, Wash.KITI 1420Chelan. Wash. KOZI 1220Cheraw. S.C. WCRE 1420Cherryville. N. C. WCSL 1590Cherokee, Iowa KCHE 1440Chester, III. KBGM 980Chester. Pa. WEEZ 1590WVCH 740Chester, S.C. WGCD 1490Chester. Va. WIKI 14<strong>10</strong>Chestertown. Md. WCTR 1530Cheyenne. Wyo. KFBC 1240KCHY 1530KRAE 1480KVWO 1370(END 980Chinge, III. WAAF 950WAIT 820WBBM 780WCFL <strong>10</strong>00WCRW 1240WEDC 1240W G N 720WIND 560WJJD <strong>11</strong>60WLS 890WMAQ 670WMBI <strong>11</strong><strong>10</strong>WNUS 1390WSBC 1240Chicago Hats.. III. WMPP 1470WCGO 1600Chickasha. Okla. K W CO 1560Chico, Calif. KHSL 1290KPAY <strong>10</strong>60Chicopee. Mass, WACE 730Childress. Tex, KCTX 15<strong>10</strong>Chillicothe, Mo. KCHI <strong>10</strong><strong>10</strong>Chillicothe. Ohio WBEX 1490WCHI 1350Chipley, Fla. WBGC 1240Chippewa Falls, Wis.WAXX <strong>11</strong>50Christiansburg. Va. W<strong>11</strong>1 1260Christiansted. V.I. WIVI 970Church Hill. Tenn. WMCH 1260Cicero. Ill. WVON 1450Cincinnati, Ohio WCKY 1530WCIN 1480WCPO 1230WKRC 550WLW 700WSAI 1360WZIP <strong>10</strong>50Clanton. Ala. WKLF 980Clare. Mich. WCRM 990Claremont. N.H. WTSV 1230Claremore, Okla. KWPR 1270Clarion, Pa. WWCH 1300Clarksourg, W.Va. WBOY 1400WHAR 1340WPDX 750Clarksdale, Miss. WROX 1450W K O L 1600Clarksville. Ark. KLYR 1360Clarksville. Tenn. WJZM 1400Clarksville. Tex.Claxton. Ga.Clayton. Ga.Clayton. Mo.Clayton. N.Mex.Clearfield, Pa.Clearwater. Fla.Cleburne. Tex,Clermont. Fla.Cleveland. Ga.Cleveland. Miss.Cleveland. OhioWDXNKCARWCLAWGHCKXLWKFUOKLMXWCPAWTANWAZEKCLEWSLCW R W HWCLDWOSKKYWWDOKWEREWOARWH KWABQWJWCleveland, Tenn. WBACWCLECleveland. Tex. KVLBCleve. Hats., Ohio WJMOClewiston. Fla. WOWYClifton. Ariz. KCLFClifton Forge. Va. WCFVClinch°, Va. WDICClinton, Ill. WHOWClinton, Iowa KCLNKROSClinton. Mo. KDKDKITHClinton, N.C. W RRZClinton. Okla. KWOEClinton. S.C. W PCCClinton. Tenn. WYSHCloquet, Minn. WKLKClovis, N.Mex. KCLVKICACoachella. Calif. KCHVCoalinga. Calif. KBMXCoatesville. Pa.Coen. Fla.WCOJWKKOW EZYCocoa Beach, Fla. WRKTCody. Wyo. KODICoeur d'Alene. Ida. KVNICoffeyville, Kans. KGGFColby, Kans. KXXXColdwater. Mich. W<strong>TV</strong>BColeman, Tex. KSTAColfax, Wash. KCLXCollege Park. Ga. WAIACollierville. Tenn. WSHCColonial Heights. Va.WPVAColorado City. Tex. KVMCColo. Saris., Colo. KRDOKPI KKVORKSSSKYSNKRYTColumbia, Ky.Columbia, Miss.WAINWCJU135014701570132085014509001340860<strong>11</strong>2013401350149014<strong>10</strong>1<strong>10</strong>0126013001220142015408501340157014<strong>10</strong>1490159014001230143015201390134012801350880132014<strong>10</strong>1380123012409809701470142086013501300140012406907901590<strong>10</strong>00145015701590129013201240158013007401460153012701450OCTOBER- NOVEMBER, <strong>1965</strong><strong>10</strong>9


win-revsEMU®ao@LocationColumbia. Mo.Columbia, Pa.Columbia, S.C.C.L.Ke.KFRU 1400KCGM 1580WCOY 1580WCOS 1400WIS 560WOIC 1320WNOK 1290WQXL 1470Columbia, Tenn, WMCP 1280WKRM 1940Columbus. Ga. WDAK 540WRBL 1420WGBA 1270WCLS 1580WOKS 1340Columbus, Ind. WCSI <strong>10</strong><strong>10</strong>Columbus, Miss. WACR <strong>10</strong>50WCBI 550Columbus. Nebr. KJSK 900KTTT 15<strong>10</strong>Columbus. Ohio WBNS 1480WCOL 1230WMNI 920WOSU 820W<strong>TV</strong>N 6<strong>10</strong>WVKO 1580Colville. Wash. KCVL 1270Comanche. Tex. KCOM 1550Commerce. Ga. WJJC 1270Concord. Calif. KWUN 1480Concord. N.H. W K X L 1450Concord. N.C. WEGO 14<strong>10</strong>Concordia. Kans. KNCK 1390Conneaut, Ohio WWOW 1360Connellsville, Pa. WCVI 1940Connersville, Ind, WCNB 1580Conroe. Tex. KMCO 900Conway. Ark. KCON 1290KVEE 1330Conway. N.H. WBNC <strong>10</strong>50Conway. S.C. WLAT 1930Cookeville. Tenn. WHUB 1400WPTN 1550Coolidge. Ariz. KCKY <strong>11</strong>50Coos Bay, Oreg. KOOS 1230KYNG 1420Copper Hill, Tenn. WLSB 1400Coquille. Oreg. KWRO 630Coral Gables. Fla. WRIZ 1550WVCG <strong>10</strong>80Corbin, Ky. WCTT 680WYGO 1390Cordele. Ga. WMJM 1490Cordova, Alaska KLAM 1450Corinth. Miss. WCMA 1290Cornelia, Ga. WCON 1450Corning. Ark. KCCB 1260Corning, N.Y. WCBA 1350WCLI 1450Corona. Cal. KREL 1370Corpus Christi, Tex.KCTA <strong>10</strong>30KCCT <strong>11</strong>50KEYS 1440KRYS 1960KSIX 1230KUNO 1400Corry, Pa. WOTR 1370Corsicana, Tex. KAND 19<strong>10</strong>Cortez. Colo. KVFC 740Cortland. N.Y. WKRT 920KFLY 1240KLOO 1350Corvallis. Ore. KLOO 1340Corydon. Ind. WPDF 1550Coshocton, Ohio WTNS 1560Cottage G rove. Ore. K N N D 1400Cottonwood, Ariz. KVRD 1240KVIO 1600Coudersport. Pa. WFRM 600CouncilBluffs. IowaKFNF 920KRCB 1360Courtenay, B.C. CFCP 1440Covington, Ga. WGFS 1430Covington, Ky. WCLU 1320Covington, La. WARB 730Covington. Tenn. WKBL 1250Covington, Va. WKEY 1340Cowan. Tenn. WZYX 1440Craig. Colo, K RAI 550Crane, Tex. KCRR 1980KBSN 970Crawfordsville. Ind.WCVL 1550Crescent City, Calif. KPLY 1240KPOD 19<strong>10</strong>Creston, Iowa KSIB 1520Crestview, Fla. WCNU <strong>10</strong><strong>10</strong>1<strong>10</strong>Location C.L. Kc.WJSB <strong>10</strong>50Crewe, Va. WSVS 800Crockett. Tex. (IVY 1290Crookston, Minn. KROX 1260Crossett, Ark. KAGH 80<strong>11</strong>Crossville, Tenn. WAEW 1930Crowley, La. (SIG 1450Cuero, Tex. KCFH 1600Cullman. Ala. WFMH 1460WKUL 1340Culpeper, Va. WCVA 1490Cumberland, Ky. WCPM 1280Cumberland. Md. WCUM 1230WTBO 1450Cummings, Ga. WSNE 14<strong>10</strong>Cushing. Okla. KUSH 1600Cuyahoga Falls. OhioWCUE <strong>11</strong>50Cypress Gardens, Fla.WGTO 540Cynthiana, Ky. WCYN 1400Dade City. Fla. WDCF 1350Dadeville, Ala, WDVC 9<strong>10</strong>Dalhart, Tex. KXIT 14<strong>10</strong>Dallas, N.C. WAAK 960Dallas, Oreg. KROW 1480Dallas, Tex. KRLD <strong>10</strong>80KIXL <strong>10</strong>40KSKY 660KLIF <strong>11</strong>90WFAA 570WFAA 820KBOX 1480WRR 19<strong>10</strong>Dalton, Ga. WBL1 1230WRCD 1430WTTI 1530Danbury, Conn, WLAD 800Danville, Ill. WDAN 1490Dauille, Ky.Danville, Pa.Danville. Va.WITY 980WHIR 1230WPGM 1570WBTM 1330WYPR 970WOVA 1250WILA 1580Dardanelle. Ark. KCAB 980Darlington, S.C. WDAR 1350Davenport, Iowa WOC 1420KWNT 1580(SIT <strong>11</strong>70Dawson, Ga. WDWO 990Dayton, Ohio W H I O 1290WING 14<strong>10</strong>WONE 980WAVI 12<strong>10</strong>Dayton. Tenn. WDNT 1280Daytona Beach, Fla.WNDB <strong>11</strong>50WMF1 1450WROD 1340Deadwood, S.Dak. KDSJ 980Dearborn, Mich WKNR 13<strong>10</strong>Decatur, Ala. WHOS 800WAIF 1490WMSL 1400Decatur-Atlanta, Ga.KGUN <strong>10</strong><strong>10</strong>WOMN 13<strong>10</strong>Decatur. III. WDZ <strong>10</strong>50WSOY 1340Decatur. Ind. WADM 1540Decorah. Iowa K D EC 1240KWLC 1240Deer Lodge. Mont. KDRG 1400Deerfield. Va. WABH <strong>11</strong>50Defiance, Ohio WONW 1280De Funlak Springs. Fla.WDSP 1280WZEP 1460De Kalb, Ill. WLBK 1360De Land, Fla. WJBS 1490W000 19<strong>10</strong>Delano. Calif. KCH1 <strong>10</strong><strong>10</strong>Delaware, Ohio WDLE 1550Delray, Bch., Fla. WOBF 1420Del Rio. Tex, (01K 1230Delta. Colo. KDTA 1400Deming, N.Mex. KOTS 1230Demopolis, Ala. WXAL 1400WJWT 1350Denham Spres., La. WLBI 1220Denison. Iowa KDSN 1580DenisonSherman, Tex.KDSX 950Denton. Tex. KDNT 1440Denver. Colo. KDEN 1940KFML 1390KHOW 630KIMN 950KLIR 990KLZ 560KBTR 7<strong>10</strong>KOA 850KPOF 9<strong>10</strong>KFSC 1220Denver City, Tex.De Queen, Ark.DeRidder, La.Des Moines, IowaKTLN 1280KKAL 1580(DON 1990KDLA <strong>10</strong><strong>10</strong>KCBC 1390KIOA 940KRNT 1350Location C.L. Kc. Location C.L. Xc.KSO 1460KWKY <strong>11</strong>50WHO <strong>10</strong>40Detroit. Mich. WCAR <strong>11</strong>90W1BK 1500WJLB 1400W1R 760WW1 950WXYZ 1270Detroit Lakes. Minn.KDLM 1940Devils Lake,N.Dak.KDLR 1240Dexter, Mo. KDEX 1590Diboll, Tex. KSPL 1260Dickinson, N.Dak. KDIX 1290Dickson, Tenn. WDKN 1260Dillon, Mont. KDBM 800Dillon. S.C. WDSC 800Dimmitt, Tex. KDHN 1470Dinuba, Calif. KRDU <strong>11</strong>30Dixon, III, WIXN 1460Dodge City. Kans. KGNO 1370KEDD 1550Donaldsonville. Ga. WSEM 1500Doniphan, Mo. KDFN 1500Dothan, Ala. WAGF 1920WDIG 1450WOOF 560Douglas. Ariz, KAWT 1450KAPR 990Douglas, Ga. WDMG 860WOKA 13<strong>10</strong>Douglas, Wyo. KWIV <strong>10</strong>50Douglasville. Ga. WDGL 1520Dover. Del. WDOV 14<strong>10</strong>WKEN 1600Dover, N.J. WRAN 15<strong>10</strong>Dover, N.H. WTSN 1270Dover, Ohio WJER 1450Dowagiae, Mich. WDOW 1440Doylestown, Pa. WBUX 1570Dublin, Ga. WMLT 1930WXLI 1230Du Bola, Pa. WCED 1420Dubuque, Iowa KDTH 1370WDBQ 1490Duluth, Minn. KDAL 6<strong>10</strong>WERC 560KAOH 1390Dumas. Tex. KDDD 800Duncan. Okla. KRHD 1350Dundalk, Md. WAVE 860Dundee. N.Y. WFLR 1570Dunkirk. N.Y. WDOE 14<strong>10</strong>Dunn, N.C. WCKB 780Du Quoin. Ill. WDQN 1580Durango, Colo. KIUP 990KDGO 1240Durant. Okla. KSEO 750Durham, N.C. WONC 620WSRC 14<strong>10</strong>WSSB 1490WTIK 19<strong>10</strong>Dyersburg. Tenn. WDSG 1450WTRO 1330Eagle Pass, Tex. KEPS 1270Eagle River, Wis. WERL 950Easley, S.C. WELP 1960E. Grand Forks. Minn.KRAD 1590Eastland, Tex. KERC 1590E. Lansing, Mich. WKAR 870WVIC 730E. Liverpool. Ohio WOHI 1490East Longmeadow, Mass.WTYM 1800Eastman. Ga. WPFE 7<strong>10</strong>E. Moline, Ill. WDLM 960E. Point, Ga. WTJH 1260Easton, Md. WEMD 1460Easton, Pa. WEEX 1230WEST 1400Eatontown. N.1. WHTO 14<strong>10</strong>Eau Claire. Wis. WEAQ 790WBIZ 1400WECL <strong>10</strong>30Eau Gallia, Fla. WMEG 920Ebensburg. Pa, WEND 1580Edenton. N.C. WCDJ 1260Edinburg. Tex.Edmonds, Wash.Emngham, Ill.Elba. Ala.Elberton, Ga.El Cajon, Calif.El Campo. Tex.El Centro, Calif,KGDN 690WCRA <strong>10</strong>90WELB 1350WSGC 1400KDEO 9<strong>10</strong>KULP 1990KXO 1230KAMP 1430El Dorado. Ark. KOMS 1290KELD 1400Eldorado. Kans. K6TO 1360Eldorado Springs, Mo.KESM 1580Eleele. Kanal, HawaiiKUAI 720Elgin. III. WRMN 14<strong>10</strong>Elizabeth City. N. C.WCNC 1240WGAI 560Elizabethton, Tenn. WBE1 1240WIDD 1520Elizabethtown, Ky. WIEL 1400Elizabethtown. N.C. WBLA 1440Elizabethtown. Pa. WHRY 1600Elk City. Okla. KBEK 1240Elkhart, Ind. WTRC 1340WCMR 1270Elkins, N.C. WIFM 1540Elkins, W.Va. WDNE 1240Elko, Nev. KELK 1240Elkton. Md. WSER 1550Ellensburg. Wash, KXLE 1240Ellenville, N.Y. WELV 1370Ellsworth, Me. WDEA 1970Elmira, N.Y. WELM 14<strong>10</strong>WENY 1230Elmira Heights-Horseheads, N.Y.WEHH 1590El Paso, Tex. KROD 600KELP 920KHEY 690KINT 1590KIZZ <strong>11</strong>50KSET 1340KTSM 1980El Reno. Okla. KELR 1460Ely. Minn. WELY 1450Ely, Nev, KELY 1230Elyria. Ohio WEOL 930Eminence, Ky. WSTL 1600Emporia, Kans. KVOE 1400Emporia, Va. WEVA 060Emporium, Pa. WLEM 1250Endicott, N.Y. WENE 1430Englewood, Coto. KGMC <strong>11</strong>50Englewood, Fla. WEND 1590Enid, Okla. KCRC 1390KGWA 960Enterprise, Ala, WIRB 600Enterprise, Oreg. KWVR 1940Ephrata, Pa. WGSA 13<strong>10</strong>Ephrata, Wash. KULF 790Erie, Pa. WWYN 1260WICU 1330WJET 1400WWGO 1450Erwin. Tenn. WEMB 1420Escanaba. Mich. WDBC 680WLST 600Escondido, Calif. KOWN 1450Espanola, N. M. KDCE 970Etowah, Tenn. WCPH 1220Eufaula, Ala. WULA 1240Eugene, Oreg. KORE 1450KPIR 1500KASH 1600KATR 1320KERG 1280KUGN 590KWFS 1540Eunice. La. KEUN 1490Eureka, Calif. KINS 980KDAN 790Eustis. Fla. WLCO 1240Evanston, III. WEAW 1330WNMP 1590Evanston, Wyo. KEVA 1240Evansville, Ind. WROZ 1400WGBF 1280W I KY 820WJPS 1930Eveleth. Minn, WEVE 1340Everett, Pa. W W D S 1 1<strong>10</strong>Everett, Wash. KRKO 1980KWYZ 1230E , Al., WBLO 1470Fairbanks, Alaska KFAR 6<strong>10</strong>KFRB 900Fairbury, Nebr. KGMT 13<strong>10</strong>Fairfax, Va. WEEL 13<strong>10</strong>Fairfield, III. WFIW 1390Fairfield, Iowa KMCD 1570Fairhope, Ala. WABF 1220Fairmont, Minn. (SUM 1370Fairmont, N.C. WFMO 860Fairmont, W.Va. WMMN 920WTCS 1490Fairway, Kan. KUDL 1380Fajardo, P.R. WMDD 1480Falfurrlu, Tex. KPSO 1260Fall River, Mass. WALE 1400WSAR 1480KVLV 980Falls Church, Va. WFAX 1220Falls City, Nebr. KTNC 1290Fargo, N.Dak. WDAY 970KFNW 900KQWB 1550KXGO 790Faribault. Minn, KOHL 920Farmersville, La. KTOL 1470Farmington, Me. W KTJ 1380Farmington, Mo. KREI 800Farmington, N.M. KENN 1390KWYK 960KRZE 1280Farmville, N.C. WFAG 1250Farmville, Va. WFLO 870Farrell. Pa. WFAR 1470Farwell, Tex, KZOL 1570Fayette. Ala. W W W F 990Fayetteville, Ark. KHOG 1440KFAY 1250RADIO -<strong>TV</strong> EXPERIMENTER


LocationLocation C.L. Kc.Fayetteville, N.C. WFAI 1230WFNC 940WFLB 1490WIDU 1600Fayetteville. Tenn.WEKR 1240Fergus Falls. Minn.KOTE 1250Fernandino Beach, Fla.WFBF 1570Ferriday. La. KFNV 1600Festus, Mo. KJCF 1400Festus -St. Louis. Mo.KXEN <strong>10</strong><strong>10</strong>Findlay, Ohio WFIN 1330Fisher, W.Va. WELD 690Fitchburg. Mass. WEIM 1280WFGM 960Fitzgerald. Ga. WBHB 1240Flagstaff, Ariz. KCLS 600KiK1 1400KEOS 690KEOS 1290Flat River. Mo. KFMO 1240Flint, Mich. WFDF 9<strong>10</strong>WTRX 1330WAMM 1420WMRP 1570WKMF 1470WTAC 600Flomaton, Ala. WTCB 990Fl . Ala. W<strong>10</strong>1 1940WOWL 1240Florence, S.C. W I M X 970WOLS 1230WYNN 540Floydada, Tex. KFLD 900Foley. Ala. WHEP 13<strong>10</strong>Fond du Lae. Wis. KFIZ 1450Fordyce, Ark. KBJT 1570Forest, Miss. WMAG 860Forest City, N.C. W BBO 780WAGY 1320Forest Grove. Ore. KWAY 157<strong>11</strong>Forrest City. Ark. KXJK 950Ft. Atkinson. Wis. WFAW 940Ft. Brags. Calif. KDAC 1230Ft. Campbell. Ky. WABD 1370Ft. Collins. Colo. KCOL 14<strong>10</strong>KZIX 600Ft. Dodge, Iowa KVFD 1400KWMT 540Ft. Knox. KY. WSAC 1470Ft. Lauderdale. Fla. WFTL 1400WWIL 1580Ft. Madison. Iowa KXGI 1360Ft. Morgan. Colo. KFTM 1400Ft. Myers, Fla. WINK 1240WMYR 14<strong>10</strong>WCAI 1350Ft. Payne, Ala. WFPA 1400WZOB 1250Ft. Piers. Fla. WARN 1390WI RA 1400Ft. Seott, Kans. KMDO 1600Ft. Smith. Ark. KFPW 1230KFSA 950KTCS 14<strong>10</strong>KWHN 1920Ft. Stockton. Tex. KFST 860Ft. Valley, Ga. WFPM <strong>11</strong>50Ft. Walton Beach. Fla.WNUE 1400WFTW 1260Ft. Wayne. Ind. WCL 1250WOWO <strong>11</strong>90WANE 1450WKJG 1380Ft. Werth. Tex. KJIM 870KCUL 1540KFJZ 1270KNOK 970WBAP 570WRAP 820KXOL 1360Fostoria. Ohio WFOB 1430Fountain City. Tenn.WGYW 1430WROL 1490Fountain Inn. S.C. WFIS 1600Fowler, Calif. KLIP 1220Framingham, Mass.WKOX <strong>11</strong>90Frankfort. Ind. WI LO 1570Frankfort, Ky. WFKY 1490Franklin, Ky. WFKN 1220Franklin, La. KFRA 1990Franklin, N.C. WFSC <strong>10</strong>50Franklin, N.H. WFTN 1240Franklin, Pa. WFRA 1450Franklin, Tenn. WAGG 950Franklin. Va. WYSR 1250Frederick. Md. WFMD 930Frederick, Okla. KTAT 1570Fredericksburg, Tex. KNAF 9<strong>10</strong>Fredericksburg. Va. WFVA 1230WFLS 1350Frederiektown, Mo.KFTW 1450Fredonia. N.Y. WBUZ 1570Freeport. Ill. W F RL 1570Freeport. N.Y. WGBB 1240Freeport. Tex. KBRZ 1460LocationFremont. Mich.Fremont, Nebr.Fremont. OhioFresno. Calif.C.L.Kc.WBFC 1490WSHN 1550KHUB 1340WFRO 900KARM 1430KBIF 900KIRV 15<strong>10</strong>KEAP 980KXEX 1550KFRE 940GST 1600ICI.IAK 13401c '1.1 580Is 0 1800Front Royal, Va. W. i R 1450Frostburg. Md. WFRB 560Fulton. Ky. WFUL 1270Fulton, Mo. KFAL 900Fulton, N.Y. WOSC 1300Fuauay Soros.. N.C.WFVG 1460Gadsden, Ala. WGAD 1950WETO 930WAAX 570WEAC 1500Gaffney, S.C. WFGN 1570Gainesville. Fla. WDVH 980WGGG 1230WRUF 850WUWU 1390Gainesville, Ga. WOGA 550WDUN 1240WLBA 1580Gainesville. Tex. KGAF 1580Gaithersburg, Md. WH MC <strong>11</strong>50Galax. Va. WBOB 1380Galesburg. Ill. WG1L 1400WAIK 1590Gallatin. Tenn. WHIN <strong>10</strong><strong>10</strong>Gallipolis. Ohio WIEH 990Gallup. N. Mea. KGAK 1330KYVA 1230Galveston. Tex. KILE 1400KGBC 154<strong>11</strong>Gander. Nfld. CBG 1450Garden City. Kans. KNCO <strong>10</strong>50KIUL 1240Garden City. Mich. WERB <strong>10</strong>90Gardner. Mass. WGAW 1340Gary, Ind, WWCA 1270WLTH 1370Gastonia. N.C. WGNC 1450WLTC 1370Gate City. Va. WGAT <strong>10</strong>50Gaylord. Mich. WATC 900Genesee, Ill. WGEN 1500Geneva. Ala. WGEA <strong>11</strong>50Geneva, Ill. WGSB 1480Geneva. N.Y. WGVA 124<strong>11</strong>Georgetown. Del. WJWL 900Georgetown. Ky. WAXU 1580Georgetown. S.C. WGTN 1400WG00 1470Georgetown. Tex. KGTN 1530Gettysburg, Pa. WGET 1320Gillette. Wyo. KIML 1490Gilroy. Calif. KPER 1290Gladewater, TeX. KEES 1430Glasgow. Ky. WKAY 1499WCDS 1440Glasgow. Mont. KLTZ 1240Glen Burnie, Md. WISZ 1590Glendale. Ariz. KRUX 1360Glendale. Calif. KIEV 870Glendive, Mont. KXGN 1400KGLE 590Glennallen. Alaska KCAM 790Glens Falls. N.Y. WSET 14<strong>10</strong>WWSC 1450Glenville. Ga. WKIG 1580Glenwood Sprgs., Colo.KGLN 980Globe. Ariz. KZOW 1240Gloucester. Va. WDDY 1420Gloversville- Johnston. N.Y.WENT 1940Gold Beach. Oreg. KBLY 1220Golden, Colo. K1CM 1250Golden Meadow. La.KLEB 1600Golden Valley, Minn. KURS 1440KUXL 1570Goldsboro, N.C. WFMC 730WGBR <strong>11</strong>50WGOL 1300Gonzales. Tex. KCTI 1450Goodland. Kans. KLOE 730Goshen. Ind. WKAM 1460Gouverneur. N.Y. WIGS 1230Grafton. N.D. KGPC 1940Grafton. W.Va. WVVW 1260Graham. Tex. KSWA 1330Grand Coulee. Wash. KFOR 1360Grand Forks. N.D. KFJM 1370KILO 1440KNOX 13<strong>10</strong>Grand Haven. Mich.WGHN 1370Grand Island, Nebr.KMMJ 750KRGI 1430Location C.L. Kc. IGrand Junction. Colo.KREX 920KEXO 1230KSTR 620KWSL 1340Grand Prairie. Tex.KPCW 730Grand Rapids, Mich.WJEF 1230WFUR 1570WORD 14<strong>10</strong>WLAV 1340WMAX 1480WOOD 1300Grand Rapids, Minn.KOZY 1490Granpevllle, Idaho KORT 1230Granite City. Ill. WGNU 920Granite Falls. N. C. WKJK 1580Grants. N.Mex. KMIN 980Grants Pass, Oreg. KAGI 930KAJO 1270Grayson. Ky. WGOH 1370GL Barrington. Mass.WSBS 860Gt. Bend. Kans. KVGB 1590Gt. Falls. Mont. KFBB 13<strong>10</strong>KUDI 1450KMON 560KARR 1400Greeley, Colo. KFKA 3<strong>10</strong>KYOU 450Green Bay. Wis. WBAY 360WJPG 440WDUZ 400Greeneville. Tenn. WGRV 340WSMG 450Greenfield, Mass. tH A I 240Greensboro. N.C. WBIG 470WCOG 320WEAL 5<strong>10</strong>WKTB 550WGBG 1400WPET 950Greensburg. Pa. WHiB 620Greenville, Ala. WGYV 1380Greenville. Ky. WKYF 1600Mich. WPLB 1380Greenville.G Ille. Miss. WJPR 1830WDOT 9001260WGVMGreenville. Pa. WGRP 940Greenville. N. C. WNCT 1590W OO W 1340WPXY 1550G Ilk. S.C. W ESC 680WFBC 1330WMRB 1490WMUU 1260WQOK 1440G iIle, Tex. KGVL 1400Greenwich. Conn. WGCH 1490Greenwood, Miss. WABG 960WGRM 1240WLEF 1540Greenwood. S.C. WCRS 1450WGSW 1350Greer. S.C. WEAR 800WCKI 1300Grenada. Miss. WNAG 1400Gresham. Oreg. KRDR 1230Gretna, Va. WMNA 730Griffin, Ga. WKEU 1450WHIE 1320WGRI 14<strong>10</strong>Grinnell. Iowa KGRN 14<strong>10</strong>Groton. Conn. WSUB 980Grove City, Pa. WSAJ 1340Grundy. Va. WNRG 940Guayama. P.R. WXRF 1590Gulfport, Miss. WROA 1390WGCM 1240Gunnison. Colo. KGUC 1490Guntersville. Ala. WGSV 1270Guthrie. Okla. KWRW 1490Guymon. Okla.Hagerstown. Md.KGYN 1220WARK 1490WJEJ 1240Haines City, Fla. WHAN 930Haleyvllle. Ala. WJBB 1230Halfway, Md. WHAG 14<strong>10</strong>Hamden. Conn. WDEE 1220Hamilton, Ala. WERH 970Hamilton, Mont. KYLQ 980Hamilton. Ohio WMOH 1450WCNW 1560Hamilton. Tex. KCLW 900Hamlet. N. C. WKDX 1250Hammond, Ind. WJOB 1230Hammond. La. WFPR 1400Hammonton, N.J. WNJH 1580Hampton. S.C. WBHC 1270Hampton. Va. WVEC 1490Hancock. Mich. WMPL 920Hanford. Calif. KNCS 620Hannibal. Mo. KH MO <strong>10</strong>70Hanover. N.H. WTSL 1400WDCR 1340Hanover, Pa.Hardin. Mont.WHVR 1280KHDN 123<strong>11</strong>Harlan. Ky. WHLN 14<strong>10</strong>Harlingen. Tex. KGBT 1530Harriman. Tenn.Harrisburg. Ill.Harrisburg. Pa.C.L.Kc.WHBT 1600WEBQ 1240WFEC 1400WCMB 1460WHP 580W K BO 1230Harrison. Ark. KHOZ 900Harrisonburg, Va. WHBG 1360WSVA 550Harrodsburg. Ky. WHBN 1420Hartford, Conn. WDRC 1960WCCC 1290WPOP 14<strong>10</strong>WTIC <strong>10</strong>80Hartford. Wis. WTKM 1640Hartselle. Ala. WHRT 860Hartsville. S.C. WHSC 1450Hartwell. Ga. WKLY 980Harvard. Ill. WMCW 1600Harvey. Ill. WBEE 1570Hastings. Mich. WBCH 1220Hastings. Minn. KDWA 1460Hastings. Nebr. KHAS 1230KICS 1550Hattiesburg. Miss. WBKH 950WFOR 1400WHSY 1230WXXX 13<strong>10</strong>Havelock. N.C. WUSM 1330Haverhill. Mass. WHAV 1490Havre. Mont. KOJM 8<strong>10</strong>Havre de Grace. Md.WASA 330Hawkinsoille, Ga. WCEH 6<strong>10</strong>Haynesville, La. KLUV 580Hays. Kans. KAYS 400Hayward, Wis. WHSM 9<strong>10</strong>Hazard. Ky. WKIC 990Hazelhurst, Ga. WVOH 920Haziehurst, Miss. WMDC 220Hazleton. Pa. WAZL 490Helena, Ark. KFFA 1360Helena. Mont. KCAP 540KBLL 240Hemet. Calif. KHSJ 320Hempstead. N.Y. WHLI <strong>10</strong>0Henderson, Ky. WSON 860Henderson, Nev. KBMI 400KTOO 280Henderson. N.C. WHNC 890WIZS 450Henderson, Tex. KGRI 000KWRD 470Hendersonville. N.C.WHKP 450WHVL 600Henryetta. Okla. KHEN 590Hereford. Tex. KPAN 860Herkimer. N.Y. WALY 420Hermiston, Oreg. KOHU 570Herendon, Va, WHRN 440Herrin. Ill. WJPF 340Hettinger. N.Dak. KNDC 490Hibbing, Minn. WMFG 240Hickory. N.C. WH KY 290W I RC 830WSPF 000Highland, Ill. WINO 5<strong>10</strong>Highland Park. Ill. WEEF 430Highland Park. Tex. KVIL 150Highland Springs. Va.WENZ 450High Point, N.C. WMFR 230WNOS 590WHPE 070Hillsboro, Ohio WSRW 590Hillsboro. Oreg. KUIK 560Hillsboro. Tex. KHRR 560Hillsdale. Mich. WCSR 340Hillsville, Va. WHHV 400Hilo. Hawaii (HOC 970KIPA 1<strong>10</strong>KIMO 850Hinesville, Ga. KGML 990Hinton. W. Va. WMTD 1380Hobbs, N.Mex. KWEW<strong>11</strong> 00Holbrook. Ariz. KDJI 1270Holdenville, Okla. KVYL 1370Holdredse, Nebr. KUVR 1380Holland, Mieh. WHTC 1450WJRL 1260Hollister, Calif. KGHT 1520Hollywood. Fla. WGMA 1920Holly Hill. S.C. WHHL 1440Holyoke. Mass. WREB 930Homer. La, KHAL 1320Homestead, Fla. Will 1430Homewood. Ala. WILD 1400Honolulu, Hawaii KAIM 870KGMB 590KZOO 12<strong>10</strong>KHAI <strong>10</strong>90KPOI 1580KIKI 830KGU 760K H V H <strong>11</strong>140KNDI 1270KOHO <strong>11</strong>70KOLL 1420KOHL 650KTRG 990OCTOBER- NOVEMBER, <strong>1965</strong><strong>11</strong>1


wNrEsLrJI l Oao@Location C.L. Kt.KULA 690Hood River, Ores. KIHR 1340Hope, Ark. KXAR 1490Hopewell. Va. WHAP 1340Hopkinsville, Ky. WHOP 1230WKOA 1480Regular'', Wash. KHOK 1560Hornell. N.Y. WWHG 1320WLEA 1480Hot Springs. Ark. KAAB 1340KBHS 590KZNG 1470Hot Springs, S.Dak.KOBH 580Houghton. Mich. WHEW 1400Houghton Lake. Mich.WHGR 1290Houston, Maine WHOU 1340Houma. La. KCIL 1490Houston. Miss. WCPC 940Houston. Mo. KTBC 1250Houston, Tex. KCOH 1430KENR <strong>10</strong>70KILT 8<strong>10</strong>KNUZ 1290KODA <strong>10</strong><strong>10</strong>KPRC 950KTHT 790KTRH 740KXYZ 320KYOK 590Howell. Mich. WHMI 350Hudson, N.Y. WHUC 230Hugo. Okla. KIHN 340Humacao, P.R. WALO 240Humboldt. Tenn. W 1 R1 740Huntingdon. Pa. WHUN 150Huntington, Ind. WHIT 300Huntington, N.Y. WGSM 740Huntington. W.Va.WKEE 800WSAZ 930WWHY 1470Huntsville, Ala. WBHP 1230WEUP 1600WFIX 1450WAAY 1550Huntsville. Tex. KSAM 1490Huron, S.Dak. KIJV 1340Hutchinson. Kans. KWBW 1450KWHK 1260Hutchinson, Minn. KDUZ 1260Hyde Park. N.Y. W H V W 950Idabel. Okla. KBEL 1240Idaho Falls. Idaho KID 590KTEE 1280Immokalee. Fla. WCOF 1490Independence, la. KUPI 980KOUR 1220Independence. Kans. KIND <strong>10</strong><strong>10</strong>Independence, Mo. KCCX 15<strong>10</strong>Indiana. Pa. WOAD 1450Indianapolis, Ind. WATT 8<strong>10</strong>WBRI 1500WFBM 1260WGEE 1590W1BC <strong>10</strong>70WIFE 13<strong>10</strong>WIRE 1430WXLW 950Indianola, Iowa KBAB 1490Indianola. La. KSAR 1490Indianola. Miss. WNLA 1380Indian Rocks Beach, Fla.WGNP 1520Indio. Calif. KREO 1400Inglewood. CHIP. KTYM 1460Inkster, Mich. WCHB 1440International Falls. Minn.KGHS 1230Iola. K KALN 1370Ionia. Mich. WION 1430Iowa City, Iowa KXIC 800WSUI 9<strong>10</strong>Iowa Falls. Iowa KFIG 15<strong>10</strong>Iron Mtn.. Mich. WM<strong>10</strong> 1450Irondale, Ala. WIXI 1480Ironton. Ohio W I RO 1230Ironwood. Mich. WJMS 630Irvine. Ky. WIRV 1550Isabella. P.R. WI8A 1390Ishpeming, Mich. WJPD 1240WCKD 970Islip, N.Y. WBIC 540Ithaca. N.Y. WHCU 870WTKO 1470luka. Miss. WVOM 1270Jackson, Ala. WHO') 1290<strong>11</strong>2Location C.L. Re.Jackson. Mich, WIBM 1450WKHM 970WJCO 15<strong>10</strong>Jackson, Miss. WJDX 620WJQS 1400WJXN 1450WOK1 1550W W U N 1590WRBC 1300WSLI 980Jackson. Ohio WLMJ 1280Jackson. Tenn. WDXI 13<strong>10</strong>WJAK 1460WTJS 1390Jackson. Wis. WYLO 540Jackson. Wyo. KSGT 1340Jacksonville. Ark. KGMR 1500Jacksonville, Fla. WJAX 930WAPE 690WZOK 1320WIVY <strong>10</strong>50WMBR 1460WOBS 1360WPDQ 800W Q I K 1280WRHC 1400Jacksonville. Ill. W<strong>11</strong>L 1550WLDS <strong>11</strong>80Jacksonville. Miss. WJQS 1400Jacksonville. N.C. WJNC 1240WLAS 9<strong>10</strong>Jacksonville. Tex. KEBE 1400Jacksonville Bah.. Fla.WBIX <strong>10</strong><strong>10</strong>Jamestown. N.Dak. KEYJ 1400KSJB 600Jamestown, N.Y. WJTN 1240WKSN 1340Jamestown, Tenn. WCLC 1260Janesville. Wis. WCLO 1230Jasper. Ala. W W W B 1360WARF 1240Jasper. Ind. WITZ 990Jasper- Tex. KTX1 1350Jefferson City. Mo. KLIK 950KWOS 1240Jefferson City, Tenn.WJFC 1480Jeffersonville, Ind. W X VW 1450Jena. La. KCKW 480Jennings. La. KIEF 290Jerome. Idaho KART 400Jerseyville. Ill. WJBM 480Jesup. Ga. WBGR 370John Day. Ore. KJOY 400Johnson City. Tenn.WJCW 9<strong>10</strong>WEIB 790Johnston. S.C. WJES 250Johnstown. N. Y. WIZR 930Johnstown. Pa. WJAC 850WARD 1490WCRO 1230Joliet. III. WJOL 1340WJRC 15<strong>10</strong>Joliette, Que. CJLM 1350Jonesboro. Ark. KBTM 1230KNEA 970Jonesboro, La. KTOC 920Jonesboro. Tenn. W.SO 1590Jonesville, La. KANV 1480Joplin. Mo. WMBH 1450KQYX 1560KFSB 13<strong>10</strong>KODE 1230Junction, Tex. KMBL 1450June. City. Kans, KJCK 1420Juneau, Alaska KINY 800KJNO 630Kallua, Hawaii KLEI <strong>11</strong>30Kalamazoo, Mich. WKPR 1420W KZO 590W K LI 1470K alispell, Mont.WKMI 1360KGEZ 600KOFI 930Kane. Pa. WADP 960Kankakee. Ill. WKAN 1320Kannapolis. N.C. WGTL 870WRKB 1460Kans. City. Kans. KCKN 1940K City. Mo. KCMO 8<strong>10</strong>KMBC 980KPRS 1590WDAF 6<strong>10</strong>WHB 7<strong>10</strong>Kaukauna, Wis. WKAU <strong>10</strong>50Kenedy- Karnes City. TexasKAML 990Kealakekua. Hawaii KENO 790Kearney, Nebr. KGFW 1340KRNY 1460Keene. N.H. WKNE 1290WKBK 1220Kelso. Wash. KLOG 1490Kemmerer, Wyo. KMER 950Kendallville, Ind. WAWK 1570Kenedy. Tex. KAML 990Kennett, Mo. KBOA 830KBXN 1540Kennewick- Pasco - Richland.Wash. KEPR 6<strong>10</strong>Kenosha. Wis. WLIP <strong>10</strong>50Location C.L. Ke.Kent. O. WKNT 1520Keokuk. Iowa KOKX 13<strong>10</strong>Kermit. Tex, KERB 600Kerrville, Tex. KERV 1230Kershaw, S.C. WKSC 1300Ketchikan. Alaska KTKN 930Kewanee. III.Keyser, W.Va. WKYR 1270WKLP 1390Key West. Fla. WKWF 1600W KIZ 1500Kilgore, Tex. KOCA 1240Killeen. Tex. KLEN <strong>10</strong>50Kimball. Nebr. KIMB 1260King, N. C. WKTE <strong>10</strong>90King City. Calif. KRKC 1490Kingman, Ariz. KAAA 1230Kings Mountain. N.C.WKMT 1220Kingsport, Tenn. WKIN 1320W KPT 1550Kingston, N.Y, WBAZ 1550WGHQ 920WKNY 1490Kingstree, S.C. WOKD 13<strong>10</strong>Kingsville, Tex. NINE 1330Kinston. N.C. WELS <strong>10</strong><strong>10</strong>WFTC 960WISP 1230Kirkland. Wash. KYAC 1460KBLE <strong>10</strong>50Kirksville. Mo. KI RX 1450Kissimmee, Fla. WOSL 1220Kittanning. Pa. WACB 1380Klamath Falls. Oreg.KAGO <strong>11</strong>50KFLW 1450KLAD 960Knoxville, Iowa KNIA 1320Knoxville. Tenn. WEIR 1240WIVK 860WATE 620WKXV 900WNOX 990WROL 1490Kokomo, Ind. WIOU 1350Kosciusko, Miss. WKOZ 1350Laconia, N.H. WLNH 1350WEMJ 1490LaCrosse. Wis. WKBH 14<strong>10</strong>WLCX 1490W KTY 580Ladysmith. Wis. WLDY 1340Lafayette, Ga. WLFA 1590Lafayette, Ind. WASK 1450WAZY 14<strong>10</strong>WBAA 920Lafayette, La. KPEL 1420KVOL 1330KXKW 1520Lafayette, Tenn. WEEN 1460LaFollette, Tenn. WLAF 1450LaGrande, Oreg. KLBM 1450LaGrange, Ga. WLAG 1240WTRP 620LaGrange. III. WTAQ 1300LaGrange. Tex. KVLG 1570Lalunta, Colo. KBZZ 1400Lake Charles. La. KLOU 1580KPLC 1470KAOK 1400Lake City, Fla. WDSR 1340WGRO 960Lake City. S.C. WJOT 1260Lake Geneva. Wis. W M I R 1550Lakeland. Fla. WLAK 1430WONN 1230WWAB 1330Lake Placid, N.Y. WIRD 920Lake Providence. La. KLPL <strong>10</strong>50Lake Tahoe. Calif. KOWL 1490Lakeview, Oreg. KQIK 1230Lake Wales, Fla. WIPC 1280Lakewood. Colo. KLAK 1600Lakewood Center, Wash.KFHA 1480Lake Worth. Fla. WLIZ 1380Lamar, Colo. KLMR 920Lamesa. Tex. KPET 690Lampasas, Tex. KCYL 1450Lancaster, Calif. KAVL 6<strong>10</strong>KBVM 1380Lancaster, N.Y. WMMJ 1300Lancaster. Ohio WHOK 1320Lancaster. Pa. WGAL 1490WLAN 1390Lancaster. S.C. WLCM 1380WAGL 1560Lander, Wyo. KOVE 1330Lanett. Ala. -W. Point. Ga.WRLD 1490Lansdale, Pa. WNPV 1440Lansford, Pe. WISH 14<strong>10</strong>Lansing, Mich. WILS 1320WJIM 1240WITL <strong>10</strong><strong>10</strong>Lapeer. Mich. WMPC 1230WTHM 1530LaPorte, Ind. WL01 1540Laramie, Wyo. KLME 1490KOWB 1290Laredo. Tex. KGNS 1300KVOZ 1490Location C.L. Ke.Lamed. Kans. KANS 15<strong>10</strong>LaSalle, Ill. WLPO 1220LasCruces, N.Mex. KOBE 1450KGRT 570Las Vegas. Nev. KENO 1460KLAV 1230KORK 1940KRAM 920KLUC <strong>10</strong>50KVEG 970Las Vegas. N.Mex. KFUN 1230Latrobe, Pa. W P K V 1570WQTW 1570WTRA 1480Laurel. Md. WLMD 900Laurel. Miss. WAML 1340WLAU 1600WNSL 1260Laurens, S.C. WLBG 860Laurinburg, N.C. WEWO <strong>10</strong>80WLNC 1300Lawrence. Kans. KFKU 1250KLWN 1320Lawrence, Mass. WCCM 800Lawrenceburg. Tenn.WDXE 1370Lawrenceville. Ga. WLAW 1360Lawrenceville, Ill. WAKO 9<strong>10</strong>Lawrenceville. Va. WLES 580Lawton. Okla. KSWO 1380KCCO <strong>10</strong>50Leadville, Colo. KBRR 1230Leaksville, N.C. WLOE 1490Leavenworth, Kans. KCLO 14<strong>10</strong>Lebanon, Ky. WLBN 1590Lebanon. Mo. KLWT 1230Lebanon, Oreg. KGAL 920Lebanon. Pa. WLBR 1270Lebanon. Tenn. WCOR 900Leesburg. Fla. WLBE 790WBIL 14<strong>10</strong>Leesburg. Va. WAGE 1290Leesville. la. KLLA 1570Lehighton, Pa. WYNS IISOLeitchfield, Ky, WMTL 1580Leland. Miss. WESY 1580LeMars, Iowa KLEM 14<strong>10</strong>Lemoore, Calif. KLAN 1320KOAD 1240Lenoir, N.C. WJRI 1340Lenoir. Tenn. WLIL 730Leonardtown, Md. W K I K 1370Levelland, Tex. KLVT 1230Levittown. Pa. WBCB 1490Lewisburg. Pa. WUNS <strong>10</strong><strong>10</strong>Lewisburg. Tenn. WJJM 1490Lewiston, Idaho KRLC 1350KOZE 1300Lewiston, Malee WCOU 1240WLAM 1470Lewistown. Mont. KXLO 1230Lewistown. Pa. WKVA 920WMRF 1490Lexington. Ky. WLAP 630WBLG 1300WVLK 590Lexington, Miss. WXTN <strong>11</strong>50Lexington, Mo. KLEX 1570Lexington, Nebr. KRVN <strong>10</strong><strong>10</strong>Lexington. N.C. WBUY 1440Lexington. Tenn. WD XL 1490Lexington. Va. WREL 1450Lexington Pk.. Md. WPTX 920Libby. Mont, KLCB 1230KLIB 1470Liberal, Kans. KSCB 1270Liberty, Ky. WPHN 1560Liberty, N.Y. WVOS 1240Liberty. Tex. KFAZ <strong>10</strong>50Lihue, Hawaii KTOH 1490Lima, Ohio WIMA <strong>11</strong>50WCIT 940Lincoln, III. WPRC 1370Lincoln, Me. WLKN 1450Lincoln. Nebr. KFOR 1240KLIN 1400KLMS 1480KLOL 1530Lineolnton, N.C. WLON <strong>10</strong>50Linton, Ind. WBTO 1600Litchfield. III. WSM1 1540Litchfield. Minn. KLFD 14<strong>10</strong>Little Falls, Minn. KLTF 960Little Falls, N.Y. WLFH 1230Littlefield. Tex. KZZN 1490Little Rock, Ark. KARK 920KALO 1250KLRA <strong>10</strong><strong>10</strong>KOKY 1440KAAY <strong>10</strong>90KVLC IOSOLittleton. Colo. KDKO 15<strong>10</strong>Littleton, N. H. WLTN 1400Live Oak, Fla. WNER 1250Livingston, Mont. KPRK 1340Livingston, Tenn. WLIV 920Livingston, Tex. KETX 1440KVLL 1220Leek Haven. Pa. WBPZ 1230Lockport, N.Y. WUSI 1340Lodi, Calif. KCVR 1570Logan, Utah KVNU 8<strong>10</strong>RADIO -<strong>TV</strong> EXPERIMENTER


Location C.L. /Cc.KSTU 1300KLGN 1390Losan. W.Va. WLOG 1230WVOW 1290Logansport. Ind. WSAL 1230Lompoc, Calif. KKOK 14<strong>10</strong>KLOM 1330KNEZ 960London. Ky. WFTG 1400Long Beach, Calif. KFOX 1280KGER 1990Longmont, Colo. KLMO <strong>10</strong>60Long Prairie, Minn. KEYL 1400Longview, Tex. (FRO 1370KLUE 1280Longview. Wash. KEDO 1400K13AM 1270Lookout Mtn., Tenn. WFLI <strong>10</strong>70Lorain. Ohio W W IZ 1380Loretto, Pa. W W SF 1400Loris. S.C. W LSC 1570Los Alamos. N.Mex. KRSN 1490Los Angeles, Calif. KABC 790( F l 640K14.1 930KFWB 980KGFJ 1230KFAC 1330KLAC 570KMPC 7<strong>10</strong>KNX <strong>10</strong>70KPOL 1540KGBS <strong>10</strong>20KRKD <strong>11</strong>50Los Banos. Calif. KLEJS 1330Louisburg. N.C. W Y R N 1480Louisville, Ga. WPEH 1420Louisville. Ky. WAVE 970WAKY 790WHAS 840WKLO <strong>10</strong>80WINN 1240WKYW 900WLOU 1350WTMT 620Louisville, Mlas. WLSM 1270Loveland. Colo. KLOV 1570Loves Park. Ill. W L U V 1520Lovington, N.Mex. KLEA 630Lowell. Mass. WCAP 980WLLH 1400Lubbock. Tex. KCBD 1590KDAV 580KLBK 1340KFYO 790KLLL 1460KSEL 950Lueedale, Miss. WHHT 1440Ludington. Mich. WKLA 1450Lufkin, Tex. KRBA 1940KTRE 1420Lumberton, N.C. WAGR 580WTSB 1940Luray, Va. WRAA 1330Lynehburs, Va. WLVA 590WLLL 930WOMS 1320WWOD 1990WBRG <strong>10</strong>50Lynn. Mass. WLYN 1360Lyons, Ga. WBBT 1340Macomb, Ill. WKAI 15<strong>10</strong>Macon. Ga. WBML 1240WCRY 900WIBB 1280WMAZ 940WNEX 1400Macon. Miss. WMBC 1400Madawaska, Me. W SJ R 1230Madera, Calif. KHOT 1250Madill. Okla. KMAD 1550Madison. Fla. WMAF 1230Madison, Ga. WYTH 1250Madison. Ind. WORX 1270Madison. S.D. KJAM 1390Madison, Tenn. WENO 1430Madison, Wis. WHA 750WIBA 13<strong>10</strong>WISM 1480WKOW <strong>10</strong>70WMAO 1550Madisonville, Ky. WFMW 730WTTL 13<strong>10</strong>Magee, Miss. WSJC 790Magnolia. Ark. KVMA 630Makawao. Hawaii KNUI 13<strong>10</strong>Malden. Mo. KTCB 1470Malone, N.Y. WICY 1490Malvern, Ark. KBOK 13<strong>10</strong>Manassas. Va. WPRW 1460Manati, P.R. WMNT 15,0Manchester. Conn. W I NF 1230Manchester, Ga. WFDR 1370Manchester. Ky. WWXL 1450Manchester, N.H. WFEA 1970WGIR 6<strong>10</strong>WKBR 1250Manchester. Tenn. WMSR 1320Manhattan. Kans. KSAC 580KMAN 1350Manistee, Mich. WMTE 1340Manistique. Mich. WTIQ 1490Location C.L. Kc.Manitou Springs. Colo.KCM9 1490Manitowoc. Wis. WCUB 980WOMT 1240Mankato. Minn. KYSM 1230KTOE 1420Manning, .C. WYMB 14<strong>10</strong>Mansfield, La. KDXI 1360Mansfield. Ohio WMAN 1400WCLW 1570Maplewood. Minn, WRCR <strong>10</strong><strong>10</strong>Maquoketa. Iowa KMAQ 1320Marathon. Fla. WFFG 1300Marianna, Ark. KZOT 1460Marianna. Fla. WTYS 1340WTOT 980Marietta, Ga. WFOM 1230WBIE <strong>10</strong>80Marietta, Ohio WMOA 1490WBRJ 9<strong>10</strong>Marine City Mich. WDOG 1590Marinette. Wis. WMAN 570Marion, Ala. WJAM 19<strong>10</strong>Marion, Ill, WGGH IISOMarion. Ind. WBAT 1400WMRI 860Marion, N.C. WBRM 1250Marion. Ohio WMRN 1490Marlon. S.C. WATP 1430Marion, Va. WMEV <strong>10</strong><strong>10</strong>WOLD 133Marked Tree. Ark. KPCA 1580Marksville, La, KAPB 1370Marlborough. Mass, WSRO 1470Marquette, Mich. WDMJ 1320Marshall. Mich. WMRR 1540Marshall, Minn. KMHL 1400Marshall. Mo. KMMO 1300Marshall, N.C, WMMH 1460Marshall. Tex. KMHT 1450KADO 14<strong>10</strong>Marshalltown. Iowa KFJB 1230Marshfield. Wis. WDLB 1450Martin. Tenn. WCMT 14<strong>10</strong>Martinsbure.W.Va.WEPM 1340Martinsville, Va WHEE 1370WMVA 1450Marystown, Nfld. Can.CHCM 560Marysville, Calif. KMYC 14<strong>10</strong>Marysville. Kans. KNDY 1570Maryville. Tenn, WGAP 1400Mason City, Iowa KGLO 1300KRIB 1490KSMN <strong>10</strong><strong>10</strong>Massena, N.Y. WMSA 1340WSTS <strong>10</strong>50Massillon. Ohio WTIG 990Matawan, W.Va. WHJC 1360Mattoon. III. WLBH <strong>11</strong>70Mauston, Wis, WRIC 1270Mayaguez, P.R. WAEL 600WK1B 7<strong>10</strong>WORA 760WPRA 990WTIL 1900Mayfield. Ky, WNGO 1320Mayodan,N.C. WMYN 1420Maysville. Ky. WFTM 1240McAlester. Okla. KTMC 1400McAllen, Tex.McCamey, Tez.McComb. Miss.McCook, Nebr.McGehee. Ark.McKeesport, Pa.KNED <strong>11</strong>50KRIO 9<strong>10</strong>KAMY 1450WHNY 1250WAPF 980KBRL 1300KWRV 1360KVSA 1220WEDO 8<strong>10</strong>WMCK 1300WHOM 1440McKenzie, Tenn,McKinney. Tex. KMAE 1600McMinnville. Oreg. KMCM 1260McMinnville. Tenn. WBMC 960WAKI 1290McPherson. Kans. KNEX 1540McRae, Ga. WOAX 14<strong>10</strong>Mead. Wash. KLFF 1590Meadville, Pa. WMGW 1490Medford. Mass. WHIL 1430Medford. Oreg. (MED 1440KSHA 860KDOV 1300KBOY 730KYJC 1230Medford. Wis. WIGM 1490Media, Pa. WXUR 690Melbourne. Fla. WMMB 1240Memphis. Tenn. WH BQ 560W H E R 1490WMC 790WDIA <strong>10</strong>70WMPS 680W LO K 1340WMQM 1480WREC 600KWAM 990Mena. Ark. KENA 1450Mendota. III. WGLC <strong>10</strong>90Menominee, Mleh, WAGN 1340Menomonie, Wis. WMNE 1360Merced, Calif. KYOS 1480KW1P 1580Location C.L. Kc,Meriden, Conn. W M M W 1470Meridian. Miss. WCOC 9<strong>10</strong>WDAL 1330WMOX <strong>10</strong><strong>10</strong>WOKK 1450WQIC 1390Markle, Tex. KWFA 1500Merrill. Wis, WXMT 730Mesa, Ariz. KBUZ 19<strong>10</strong>KALF 15<strong>10</strong>Metropolis, III. WMOK 920Metter, Ga. WMAC 1360Melia. Tex. KBUS 1590Mexico. Mo. KXEO 1340Mexico, Pa. WJUN 1220Miami, Ariz. K1KO 1340Miami. Fla. WGBS 7<strong>10</strong>WIOD 6<strong>10</strong>WFAB 990WMBM 1220WANE 1260WMIE <strong>11</strong>40WQAM 560WSKP 1450WINZ 940Miami. Okla. KGLC 9<strong>10</strong>Miami Beach. Fla. WMBM 1490WKAT 1360WFUN 790Michigan City. Ind. WIMS 1420Middlepart- Pomeroy. OhioWMPO 1390Middlesboro, Ky. WMIK 580Middletown, Conn. WCNX <strong>11</strong>50Middletown. N.Y. WALL 1340Middletown. Ohio WPFB 9<strong>10</strong>Midland. Mich. WMDN 1490Midland. Tex. KCRS 550KJBC <strong>11</strong>50KWEL 1440KABH 15<strong>10</strong>Milan. Tenn, WKBJ 1600Miles City. Mont. KATL 1340Milford, Conn. WFIF 1500Milford, Del, WKSB 930Milford. Mass. WMRC 1490Milledgeville. Ga. WMVG 1450Millen, Ga. WGSR 1570Millington, Tenn. WGMM 1380Millinocket, Me. WMKR 1240Millville. N.J. WMVB 1440Milton, Fla. WEBY 1330WSRA 1490Milton. Pa. WMLP 1570WARC 1980Milwaukee. Wis. WEMP 1250WFOX 860WRIT 1340WISN <strong>11</strong>50WMIL 1290WOKY 920WTMJ 620Minden. La. KASO 1240Mineola. N.Y. WFYI 1520Mineola( Tex. (MOO 15<strong>10</strong>Mineral Wells. Tex. KORC <strong>11</strong>40Minneapolis, Minn. WCCO 830WLOL 1390WMIN 1400WDGY <strong>11</strong>30WPBC 980WWTC 1280KTCR 690KTIS 900KUOM 770KSTP 1500Minot, N. Dak. KLPM 1390KHRT 1320(COB 9<strong>10</strong>Mission. Kans. KBEA 1480Mission. Tex. KIRT 1580Missoula, Mont. KCVO 1290KXLL 1450KATE 1340KYSS 9<strong>10</strong>Mitchell. S.Dak. KORN 1490Moab. Utah KURA 1450Moberly, Mo. KNCM 1230Mobile, Ala. WUNI 14<strong>10</strong>WARB 1480W GO K 900WMOO 1550WTUF 840WKRG 7<strong>10</strong>WLIQ 1360WMOZ 960Mobridge, S.Dak. KOLY 1300Mocksville. N.C. WOSL 1520Modesto. Calif. (TROT 860KBEE 970KFIV 1360Mojave, Calif. KDOL 1940Moline. Ill. WQUA 1290Monahan,, Tex. KVKM 1330Moncks Corner, S. C.WEER 950Monett. Mo. KRMO 990Monett °, Ark, KBIB 1560Monmouth. Ill. WRAM 1930Monroe. Ga. WMRE 1490Monroe, La. KMLB 1440KLIC 1230Location C.L. Kc.K NOE 540Monroe. Mich. WQTE 560Monroe. N.C. WMAP <strong>10</strong>60Monroe, Wis. WEKZ 1280Monroeville. Ala. WMFC 1960Monterey, Calif. KIDD 630KMUY 1240Montevideo, Minn. KOMA 1460Monte Vista. Colo. KSLV 1240Montezuma. Ga. WMNZ <strong>10</strong>50Montgomery. Ala. WBAM 740WCOV <strong>11</strong>70WAPX 1600WHHY 1440WMGY 800WRMA 950Montgomery. W.Va. WMON 1340Monticello, Ark. KHBM 1430Monticello. Fla. WWSD <strong>10</strong>90Monticello. Ky. WFLW 1360MontpelierBarre, Vt. 1240Montrose, Colo. KUBC 580Montrose. Pa. WPEL 1250Mooresville. N.C. WHIP 1350Moorhead. Minn. KVOX 1280Morehead. Ky. WMOR 1930Morehead City, N.C. WMBL 740Morgan City, La. KMRC 1430Morganfield, Ky. WMSK 1550Morganton. N.C. WMNC 1430Morgantown. W.Va. WAJR 1440WCLG 1300Morrilton, Ark. KVOM 800Morris, Ill. WCSJ 1550Morris, Minn. KMRS 1230Morristown, N.J. WMTR 1250Morriatown,Tenn. WCRK <strong>11</strong>50WMTN 1300Merton, Tex. KRAN 1280Moscow, Idaho KRPL 1400Moses Lake, Wash. KSEM 1470KWIQ 1260Moss Point. Miss. WACY 1460Moulton. Ala. WLCB 1530Moultrie, Ga. WMGA 1400WMTM 1300Moundsville. W.Va. WEIF 1370Mountain Grove, Mo. KLRS 1960Mountain Home, Ark.KILO 1490Mountain Home, Ida. KFLI 1240Mt. Airy, N.C. WPAQ 740W SY D 1300Mt. Carmel, Ill. WVMC 1960Mt. Clemens.Mich.WBRB 1430Mt. Dora. Fla. WVGT 1580Mt. Holly. N.J. WJJZ 1460Mt. Jackson. Va, WSIG 790Mt. Kisco. N.Y. WVIP 13<strong>10</strong>Mt. Olive. N.C. WDJS 1430Mt. Pleasant, Mich. WCEN <strong>11</strong>50Mt. Pleasant. Tex, KIMP 960Mt. Shasta. Calif. KWSD 620Mt. Sterling. Ky. WMST <strong>11</strong>50Mt. Vernon, Ill. WMIX 940Mt. Vernon. Ind. WPCO 1590Mt. Vernon. Ky. WRVK 1460Mt. Vernon. Ohio WMVO 1300Mt. Vernon. Wash. KAPS 1470KBRC 1430Muleshoe, Tex. KMUL 1380Mullins, S.C. WJAY 1280Muncie, Ind. WLBC 1340WERK 990Muntordvllle, Ky. WLOC IISOMunising. Mieh. WMAB 1400Murfreesboro, N. C. WWDR <strong>10</strong>80Murfreesboro. Tenn.WGNS 1450WMTS 8<strong>10</strong>Murphy. N.C. WCVP 600WKRK 1320Murphysboro, III. WIN! 1420Murray, Ky. WNBS 1340Murray. Utah KMUR 1230Muscatine. Iowa KWPC 860Muscle Shoals City, Ala.WLAY 1450Muskegon. Mich. W KBZ 850WKJR 1520WTRU 1600W M U S <strong>10</strong>90Muskogee. Okla. KBIX 1490KMUS 1380Myrtle Beach. S.C. W MYB 1450WTGR 1520Nacogdoches. Tex. KEEE 1230KSFA 860Nampa, Idaho KFXD 580KAIN 1340Nanticoke. Pa. WNAK 730Napa, Calif. KVON 1440Naples. Fla. WNOG 1270Narrows. Va, WNRV 990Nashua. N.H. WOTW 900WSMN 1590Nashville. Ark. KBHC 1260Nashville, Ga. WNGA 1600OCTOBER -NOVEMBER, <strong>1965</strong> <strong>11</strong>3


swarEL_I-l.__J ®aO @Location C.L. Kc.Nashville. Tenn. WKDA 1240WLAC 15<strong>10</strong>WMAK 1300WNAH 1360WSIX 980WSM 650WWGM 1560Nassau. Bahamas INS -2 1240Natchez, Miss. WMIS 1240WNAT 1450Natchitoches, La. KNOC 1450Naugatuck, Conn. WOWW 860Navasota. Tex. KWBC 1550Nebraska City, Nebr.KNCY 1600Needles. Calif. KSFE 1340Neenah. Wis. WNAM 1280Neillsville, Wis. WCCN 1370Neon. Ky. WNKY 1480Neosho, Mo. KBTN 1420Nevada. Mo. KNEM 1240New Albany, Ind. W N U W 1570New Albany. Miss. WNAU 1470Newark. Del. WNRK 1260Newark, N.J. WJRZ 970WNJR 1430WVNJ 620Newark. N.Y. WACK 1420Newark. Ohio WCLT 1430New Bedford. Mass.WBSM 1420WNH 1340New Bern, N.C. WHIT 1450WRNB 1490Newberry, S.C. WKDK 1240New Boston. Ohio WI01 <strong>10</strong><strong>10</strong>New Braunfels. Tex. KGNB 1420New Britain. Conn.WRCH 9<strong>10</strong>WRYM 840New Brunswick, N.J.WCTC 1450Newburgh. N.Y. WONY 1220Newburyport, Mass. WNBP 1470New Castle. Ind. WCTW 1550New Castle, Pa. WKST 1280Newcastle, Wyo. KASL 1240New City. N. Y. WRKL 9<strong>10</strong>New Haven. Conn. WAVZ 1300W E L I 960WNHC 1340New Iberia. La. KANE 1240KVIM 1360New Kensington. Pa.WKPA <strong>11</strong>50New London, Conn. WNLC 15<strong>10</strong>New Martinsville,W.Va.WETZ 1330Newnan, Ga. WCOH 1400WNEA 1300New Orleans. La. WDSU 1280WNNR 990WBOK 800WNOE <strong>10</strong>60WSMB 1950WNPS 1450WSHO 1230WTIX 690W W L 870WWOM 600WYLD 940Newport. Ark. KNBY 1280Newport, N.H. WCNL <strong>10</strong><strong>10</strong>Newport, Oreg. KNPT 13<strong>10</strong>Newport. R.I. WAOK 1540Newport, Tenn. WLIK 1270Newport. Vt. WI K E 1490Newport News, Va. WGH 13<strong>10</strong>WTID 1270Newport Richey. Fla.WGUL 1500New Richmond. Wis.WIXK 1590New Roads, La. K W RG 1500New Rochelle. N.Y. WVOX 1460New Smyrna Beach, Fla.WSBB 1230WORT 1550Newton. Iowa KCOB 1280Newton, Kans, KJRG 950Newton, Miss. WBKN 14<strong>10</strong>Newton, N.J. WNNI 1360Newton. N.C. WNNC 1230New Ulm, Minn. KNUJ 860New York. N.Y. WABC 770WADO 1280WBNX 1380WCBS 880WEVD 1390<strong>11</strong>4Location C.L. Kc.W H N <strong>10</strong>50WHOM 1480WINS <strong>10</strong><strong>10</strong>WLIB <strong>11</strong>90WMCA 570WNBC 660WNEW <strong>11</strong>30WNYC 830WOR 7<strong>10</strong>WPOW 1390WQXR 1560NI Falls. N.Y.WHLD 1270WJJL 1440Niceville- Valparaiso, Fla.WNSM 1340Nicholasvllle, Ky. WNVL 1250Niles. Mich. WNIL 1290Niles, Ohio WNIO 1540Nogales, Ariz. KNOG 1340Nome, Alaska KICY 850Norfolk. Nebr. WJAG 780Norfolk, Va. WTAR 790WCMS <strong>10</strong>50WNOR 1230WRAP 850Normal. III. WIOK 1440Norman, Okla. WNAD 640KNOR 1400Norristown, Pa. WNAR <strong>11</strong><strong>10</strong>N. Adams. Mass. WMNB 1230N. Atlanta.


Location C.L. Kc.Location C.L. Kc,Location C.L. Kc.Location C.L. Kc.Portale, Pa. W W M L 1470Portage. Wis. WPDR 1350Portageville, Mo. KMIS <strong>10</strong>50Portales, N.Mex. KENM 1450Port Angeles, Wash. KAPY <strong>10</strong>00KONP 1450Port Arthur. Tex. KOLE 1340KPAC 1250Porterville, Calif. KTIP 1450Port Hueneme,Calif. KACY 1520Port Huron. Mich. WHLS 1450WTTH 1980Port Jervis, N.Y. WDLC 1490Port Lavaca, Tex. KGUL 1560Portland. Ind. WPGW 1440Portland, Maine WCSH 970WGAN 560WLOB 19<strong>10</strong>WPOR 1490Portland. Oreg. KBPS 1450KBEV <strong>10</strong><strong>10</strong>KLIQ 1290KEX <strong>11</strong>90KGW 620KOIN 970KPAM 14<strong>10</strong>KPDQ 800KPOJ 1330K W J1 <strong>10</strong>80(XL 750Port Neches, Tex. KPNG <strong>11</strong>50Portsmouth. N.H. WBBX 1380WHEB 750Portsmouth, Ohio WPAY 1400WNXT 1260Portsmouth, Va. WHIR 1400WPMH <strong>10</strong><strong>10</strong>WAVY 1350Port Washington, Wis.WGLB 1560Post, Tez. KPOS 1970Potosi'. Okla. KLCO 1280Potomac -Cabin John. Md.WXLN 950Potosi, Mo. KYRO 1280Potsdam. N.Y. WPDM 1470Pottstown, Pa. WPAZ 1370Pottsville, Pa. WPAM 1450WPPA 1960Poughkeepsie, N.Y. WEOK 1390WKIP 1450Powell. Wyo. KPOW 1260Poynette, Wis. WIBU 1240Prairie du Chien, Wis.WPRE 980Pratt, Kan. KWNS 1290Prescott. Ariz. KYCA 1490KENT 1340KNOT 1450Prescott, Ark. KTPA 1370Presque Isle, Me. WAGM 950WEGP 1390Preon, Ida ho KPST 1340Preststonabure. Ky. WPRT 960WDOC 13<strong>10</strong>Price, Utah KOAL 1230Prichard, Ala. WSIM 1270Prince Albert, Sask. CKBI 900Princeton, Ill. WZOE 1490Princeton. Ind. WRAY 1250Princeton, Ky. WPKY 1580Princeton, N.J. WHWH 1350Princeton, W.Va. WLOH 1490Prineville. Oreg. KRCO 690Prosser. Wash. KARY 13<strong>10</strong>Providence, R.I. WEAN 790WHIM <strong>11</strong><strong>10</strong>WICE 1290WJAR 920WLKW 990WPRO 630WRIB 1220Provo, Utah KIXX 1400KEYY 1450KOVO 960Pryor, Okla, KOLS 1570Pueblo. Colo. KDZA 1230KAPI 680KCSJ 590KFEL 970Pueblo. Colo. KKAM 1350KPUB 1480Pulaski. Tenn. W KSR 1420Pulaski, Va. WPUV 1580Pullman, Wash- KWSC 1250KOFE <strong>11</strong>50Punta Gorda, Fla. WCCF 1580Punxsutawney, Pa, W PM E 1540Putnam, Conn. WINY 1350Puyallup, Wash. KPUY 1450Quanah, Tex. KOLJ <strong>11</strong>50Quantico, Va. WQVA 1530Quincy, Calif. KQCY 500Quincy, Fla. WCNH 1230Quincy, III. WGEM 1440WTAD 930Quincy. Mass. WJDA 1300Quincy. Wash. KPOR 1370Quitman. Ga. WSFB 1490Racine, Wis. WRAC 1460WRJN 1400Radford, Va. WRAD 1460Raeford, N.C. WSHB 1400Raleigh. N.C. WKIX 850WNOH 1550WPTF 680WLLE 570WRAL 1240Rails. Tex. KCLR 1530Rantoul. Ill. WRTL 1460Rapid City, S.Dak. KOTA 1380KIMM <strong>11</strong>50KRSD 1340KEZU 920Raton. N.Mex. KRTN 1490Ravenswood, W.Va. WMOV 1360Rawlins, Wyo. KRAL 1240Raymond. Wash. KAPA 1940Raymondville, Tex. KSOX 1240Reading. Pa. WEEU 850WHUM 1240WRAW 1340Redding. Calif. KRDG 1230KAHR 1330KQMS 1400KVCV 600KVIP 540Red Bluff, Calif. KBLF 1490Redfield, S.Dak. KFCB 1380Redlands, Calif. KCAL 14<strong>10</strong>Red Lion, Pa. WGCB 1440Red Lodge, Mont. KRBN 1450Redmond. Ores. KPRB 1240Red Wing, Minn. KCUE 1250Redwood Falls, Minn.KLGR 1490Reedsburs, Wle. WRDB 1400Reedsport, Ores. KRAF 1470Reidsville, N.C. WFRC 1600WREV 1220Remsen, N.Y. WREM 1480Reno. Nev. KO it 630KBET 1340KOLO 920KONE 1450KCBN 1280Rensselaer, Ind. WRIN 1560Rensselaer, N.Y. WEEE 1300Renton. Wash. KREN 1420Rexburg, Idaho KRXK 1230Rhinelander, Wis. WOBT 1240Rice Lake, Wis. WJMC 1240Richfield. Utah KSVCRichland, Wash. KALE 960Richland. Wis. WRCO 1450Richlands, Va. WRIC 540Richmond, Ind. WKBV 1490Richmond. Ky. WEKY 1340Richmond. Va. WANT 990WBBL 1480WRGM 1540WLEE 1480WEET 1320WGOE 1590WMBG 1980WRNL 9<strong>10</strong>WRVA <strong>11</strong>40WXGI 950WRGM 1540Richwood, W.Va. WVAR 1280Ridgecrest, Calif. K RC K 1360KLOA 1240Ridgeland, S.C. WBUG 1430Rio Piedras. P.R. WUNO 1320W RAI <strong>11</strong>90Ripley. Miss. WSCA 1260Ripley, Tenn. WTRB 1570Ripon, Wis. WCWC 1600Riverhead, N.Y. WRIV 1390WAPC 1570Riverside. Calif. KPRO 1440KACE 1570Riverton, Wyo. KVOW 1450Riviera Beach, Fla. WHEW 1600Roanoke, Ala. WELR 1360Roanoke, Va. WDB1 960W RIS 14<strong>10</strong>WHYE 9<strong>10</strong>WROV 1240WSLS 6<strong>10</strong>Roanoke Rapids N.C.WCBT 1230Roaring Sprgs., Pa.WKMC 1370Roberval, Que. CHRL 9<strong>10</strong>Robinson. Ill. WTAY 1570Robstown, Tex. KROB 500Rochester. Minn KROC 1940KFAV 1520KWEB 1270Rochester. Minn. KOLM 1520KWEB 1270Rochester, N.H. WWNH 930Rochester. N.Y. WBBF 950WHAM <strong>11</strong>80WHEC 1460WRVM 680WSAY 1370W ROC 1280Rockford. Ill. W RO K 1440WJRL <strong>11</strong>50WRRR 1930Rockford. Mich. WJPW 8<strong>10</strong>Rock Hill, S.C. WRHI 1940WTYC <strong>11</strong>50Rockingham, N.C. WAYN 900Rock Island, Ill. WHBF 1270Rockland, Maine WRKD 1450Rockmart, Ga. WPLK 1220Rock Springs, Wyo. KVRS 1360Rockville. Md. WINX 1600Rockwood.Tenn. WRKH 580Rocky Ford, Colo. KAVI 1320Rocky Mount, N C. WCEC BIOWEED 1390WRMT 1490WKWS 1290Rocky Mount, Va. WYTI 1570Rogers. Ark. KAMO 1390Rogers City, Mich. WHAK 960Rogersville, Tenn. WRGS 1370Rolla, Mo. KCLU 1590KTTR 1490Rome, Ga. WLAQ 14<strong>10</strong><strong>11</strong>IYN 1360WRGA 1470WROM 7<strong>10</strong>Rome. N.Y. W KAL 1450WRNY 1350Ronceverte, W.Va. WRON 1400Roseau. Minn. KRWB 14<strong>10</strong>Roseburg. Oreg. KRNR 1490KOEN 1240KRXL 1250KYES 950Rosenberg, Tex. KFRD 980Roservelt, N.M. KRDD 1320Rossville. Ga. WRIP 980Roswell, N.Mex. KRSY 1230KGFL 1430KBIM 9<strong>10</strong>(ROD 1320KRIK 960Roxboro. N.C. WRXO 143nRoyal Oak. Mich. WEXL 1340Rugby, N. Dak. KGCA 1450Ruidoso, N.Mex. KRRR 1340Rumford, Me. WRUM 790Rupert. Idaho KAYT 970Rushton, La. KRUS 1490Rusk. Texas KTLU 1580Russell. Kans. KRSL 990Russellville. Ala. W W W R 920Russellville, Ark. KXRI 1490Russellville, Ky. WRUS 6<strong>10</strong>Rutland. Vt. W H W B <strong>10</strong>00WSYB 1380Sacramento, Calif. KCRA 1320KFBK 1530KGMS 1380KJAY 1430KRAK <strong>11</strong>40K ROY 1240KXOA 1470Safford. Ariz. KGLU 1480KATO 1230Sag Harbor, N.Y. WLNG 1600Saginaw, Mich. WKNX 12<strong>10</strong>W SA M 1400WSGW 790St. Albans, Vt. WWSR 1420St. Albans. W.Va. WKLC 1300St. Augustine, Fla, WFOY 1240WETH 1420St. Charles, Mo. KADY 1460St. Cloud, Minn, KFAM 1450WJON 1240Ste. Genevieve, Mo. KS(iM 1340St. George. S.C. WQIZ 1300St. George, Utah KDXU 1450St. Helen, Mich. WMIC 1590St. Helens. Oreg. KOHI 1600St. Johns. Mich. WJUD 1580St. Johnsbury. Vt. WTWN 1340St. Joseph, Mich. WSJM 1400St. Joseph - Benton Harbor.Mich. WHFB <strong>10</strong>60St. Joseph, Mo, KFEQ 880KKJO 1550KUSN 1270St. Louis, Mo. KATZ 1600KMOX <strong>11</strong>20KSD 550KSTL 690K W K 1380KXOK 630WEW 770W I L 1430KXEN <strong>10</strong><strong>10</strong>St. Louis Park, Minn.KRSI 950St. Mary's, Pa. WKBI 1400St. Paul, Minn, KSTP 1500KOWB 630WMIN 1400WCCO 830St. Peter, Minn. KRBI 13<strong>10</strong>St. Petersburg, Fla. WPIN 680WSUN 620WLCY 1380St. Petersburg Beach, Fla.WILZ 1590Salamanca. N.Y. WGGO 1590Salem. Ill. WJBD 1350Salem. led. WSLM 1220Salem, Mass. WESX 1230Salem. Mo. KSMO 1340Salem, N. J. WPC 15<strong>10</strong>Salem. O. WSOM 600Salem, Oreg. KSLM 1990KAPT 1220KBZY 1490(GAY 1430Salem. Va. WBLU 1480Salida, Cole. KVRH 1940Salina. Kans. KSAL <strong>11</strong>50KFRM 550KISI 9<strong>10</strong>Salinas, Calif. KDON 1460KSBW 1380Salinas, Calif. KCTY 980.<strong>10</strong>00Saline, Mich. WOIB 1290Salisbury. Md. WBOC 960W I C O 1320WJDY 1470Salisbury. N.C. WSTP 1490WSAT 1280Salmon, Idaho KSRA 960Salt Lake City, UtahKALL 9<strong>10</strong>KCPX 1320KLUB 570KNAK 1280KSI. <strong>11</strong>60KSOP 1370KSXX 630(WHO 860KWIC 1550San Angelo, Tex. KTEO 1940KGKL 960KPEP 1420KWFR 1260San Antonio, Tex. KAPE 1480KBAT 680KBER <strong>11</strong>50KCOR 1350KITE 990KU KA 1250KUBO 13<strong>10</strong>KMAC 630KONO 860KTSA 550WOAI 1200San BIno, Calif.KCKC 1350KFXM 590KRNO 1240KMEN 1290Sandenvllle, Ga. WSNT 1490San Diego, Calif. KCBQ <strong>11</strong>70KFMB 760KOGO 600KGB 1360KSON 1240KSDO <strong>11</strong>30Sandpoint, Idaho KSPT 1400Sand Spring, Okla. (TOW 1340Sandusky, Ohio WLEC 1450San Fernando, Calif. KGIL 1260Sanford, Fla, WIRR 1400Sanford, Me. WSME 1220Sanford. N.C. WEYE 1290W W G P <strong>10</strong>50San Francisco, Calif.KFRC 6<strong>10</strong>KCBS 740KFAX 1<strong>10</strong>0(GO 8<strong>10</strong>KNBR 680KKHI 1550KSAY <strong>10</strong><strong>10</strong>KSFO 560(SOL 1450KYA 1260San Gabriel, Cal. KAIL 1430San German. P. R. WRJS <strong>10</strong>60Sanitobia, Miss. WSAO 1550San Jose, Calif. KLOK <strong>11</strong>70KLIV 1590KEEN 1370KXRX 1500San Juan. P.R. WAPA 680WHOA 870WIAC 740WIPR 940WKAQ 580WKVM 8<strong>10</strong>WKYN 630WITA <strong>11</strong>40San Luis Obispo. Calif.KATY 1340KSLY 1400KVEC 920San Marcos, Tex. KCNY 1470San Mateo, Calif. KOFY <strong>10</strong>50San Rafael. Calif. KTIM 15<strong>10</strong>San Saba. Tex. KBAL 14<strong>10</strong>San Sebastion, P.R.WFBA 1460Santa Ana. Calif. (WIZ 1480Santa Barbara, Cal. KDB 1490KGUD 990KIST 1340KTMS 1250KACL 1290Santa Clara. Calif. KG BA 1430Santa Cruz. Calif. KSCO <strong>10</strong>80Santa Fe. N.Mex. KTRC 1400KVSF 1260Santa Maria, Cal. (CO? 1400KHER 1600OCTOBER- NOVEMBER, <strong>1965</strong> <strong>11</strong>5


WMTE'S1277)aocLocation C.L. Kc.KSMA 1240KSEE 1480Santa Monica. Cal. KDAY 1580Santa Paula. Calif. KSPA 1400Santa Rosa. Calif. KSRO 1350KHUM 1580KVRE 1460KJAX <strong>11</strong>50Santa Rosa. N.Mex. KSYX 1420Sapulpa. Okla. KItEK 1550Saranac Lake, N.Y. WNBZ 1240Sarasota. Fla. WKXY 930WSAF 1220WSPB 1450WYND 1280Saratoga. N.Y. WSPN 900Saratoga Springs, N.Y.WKAJ 900Sauk Rapids. Minn.W V A L 800Sault Ste. Marie, Mich.WS00 1230Savannah. Ga. WBYG 1450WEAS 900WSAV 830WSGA 1400WTOG 1290WSOK 1230Savannah. Tenn. WORM <strong>10</strong><strong>10</strong>Sayre. Pa. WATS 960Scheffield, Ala. WSHF 1290Schenectady, N.Y. WGY 8<strong>10</strong>WSNY 1240Scotland Neck. N.C. W VAL 1280Scott City. Kans. KF LA 13<strong>10</strong>Scottsbluff. Nebr. KNEB 960KOLT 1320Scottsboro, Ala. WCRI <strong>10</strong>50WROS 1330Scottsdale. Ariz. K00T 1440Seotisville, Ky. WLGK 1250Scranton, Pa. WARM 590WEIL 690WGBI 9<strong>10</strong>WICK 1400WSCR 1320Seaford, Del. WSUX 1280Searcy. Ark. KWCB 1300Seaside. Oreg. KSRG 730Seattle, Wash., KAYO <strong>11</strong>50KIXI 9<strong>10</strong>KING <strong>10</strong>90KIRO 7<strong>10</strong>KJR 950KOL 1300KOMO <strong>10</strong>00KETO 1590KTW 1250KVI 570KXA 770KBLE <strong>10</strong>50Sebring, Fla. WJCM 960WSEB 1340Sedalia. Mo. KDRO 1340KSIS <strong>10</strong>50Seguin. Tex. K W ED 1580Salma. Ala. W G W C 1340WHBB 1490Selma. N. C. WBZB 15<strong>10</strong>Seminole. Tax. KTFO 1250Senatobia, Miss. WSAO 1550Seneca Township. S.C.WSNW <strong>11</strong>50Sevierville. Tenn. WSEV 950Seward. Alaska KIBH 950Seymour, Ind. WJC0 1990Seymour. Tex. KSEY 1230Shakopee. Minn. KSMM 1530Shallotte, N.C. WVCB 14<strong>10</strong>Shamokin. Pa. WISL 1480Shamrock. Tex. KBYP 1580Sharon, Pa. WPIC 790Shawano. Wis. WICH 960Shawnee, Okla. KGFF 1450Sheboygan. Wis. W H B L 1930WKTS 950Sheffield. Ala. WSHF 1290Shelby. Mont. KSEN <strong>11</strong>50Shelby. N.C. WOHS 730WADA 1390Shelbyville. Ind. WSVL 1520Shelbyville. Ky. WCND 940Shelbyville. Tenn. WHAL 1400W LI1 1580Sheldon. Iowa KIWA 1550Shelton. Wash. KMAS 1290Shenandoah, Iowa KMA 960KF NF 920Shenandoah. Pa. WMBT 1530<strong>11</strong>6LocationC.L.Kc.Sheridan, Wyo. KWYO 14<strong>10</strong>KROE 930Sherman. Tex. KRRV 9<strong>10</strong>KTXO 1500Shippenabur/, Pa. WSHP 1480Show Low. Ariz. KVWM 970Shreveport. La. KANB 1300KBCL 1220KEEL 7<strong>10</strong>KOKA 1550K<strong>10</strong>E 1480KCIJ 990KRMDKWKHSidney. Mont, KGCXSidney, Nebr. KSIDSidney. O. WMVRSierra Vista, Ariz. KHFHSikeston, Mo, KSIMKMPLSaler City. N.C. WNCASiloam Soros., Ark. K UOASilsbee. Tex. K KASSilver City. N.Mex. KSILSilver Sings.. Md. WQMRSimcoe, Ont. CFRSSinton Tex. KTOOSioux City. Iowa KSC1KMNSKTRISioux Falls. S.Dak.KISDKELOKNWCK S00Sitka, Alaska KIFWKSEWSkowhegan. Maine WOHMLocation C.L. Kv.Spruce Pine. N.C. WTOE 1470Stamford, Conn. WSTC 1400Stamford. Tex. KDWT 1400Stanford. Ky. WRSL 1520Starke. Fla. WPXE 1490Starkville. Miss. WSSO 1230State College, Pa. WMAJ 1450WRSC 1390Statesboro, Ga. W W NS 1240Statesville, N.C. WSIC 1400WDBM 550Staunton, Va. WTON 1240WAFC 900130 Stephenville, Tex. KS<strong>TV</strong> 15<strong>10</strong>480 Sterling, Colo. KG E K 1230340 KOLR 1490080 Sterling. Ill. WSDR 1240420 Steubenville, Ohio WS<strong>TV</strong> 1340400 Stevens Point. Wis. WSPT <strong>10</strong><strong>10</strong>520 Stillwater, Minn. WAVN 1220570 Stillwater. Okla. KSPI 780290 Stockton, Calif. Kl0V 1280300 KSTN 1420340 (WC. 1230050 Storm Lake. Iowa KAYL 990560 Streator. III. WIZZ 1250590 Stroudsburg, Pa. WVPO 840960 Stuart. Fla. WSTU 1450620 Stuart, Va. W H EO 1270470 Sturgeon Bay,Wis. WOOR 9<strong>10</strong>230 Sturgis. Mich, WSTR 1230320 Sturgis, S. D. KONG 1280270 Stuttgart. Ark. KWAK 1240140 Suffolk, Va. WLPM 1460230 Sullivan, Ind. WKQV 1550400 Sulphur. La. KIKS 13<strong>10</strong>150 Sulphur Sprgs., Tex. KSST 1230050 Summerville, Ga. WGTA 950560 Summerville. S.C. WALS 990270480Sumter. S.C. W F I G 1290WDXY 1240550 WSSC 1340450 Sunbury, Pa. WKOK <strong>10</strong>70290 Sunnyside, Wash. KREW 1230540 Sun Valley. Ida. KSKI 1340320 Superior. Nebr. KRFS 1600240 Superior, Wis. WDSM 7<strong>10</strong>480 WIGL 970990 W W 1 C 1270450 WAXK 1320240 Susanville, Calif. (SUE 1240490 Sutton. W. Va. WSGB 1490Slaton. Tex. KCASSlidell, La. WBGSSmithfield. N.C. WMPMSmithville, Tenn. WILESmyrna, Ga. WYNXSnyder, Tex. KSNYSocorro, N.Mex. KSRCSoda Spits.. Idaho KBRVSolvay. N.Y. WQSRSomerset. Ky. WSFCWTLOSomerset. Pa. WVSCSonora, Calif. KVMLSonora, Tex. KCKGSo. Bend. Ind. WNDUWIVA 580 Swainsboro. Ga. WJAT 800WSBT 960 Sweetwater, Tenn. WDEH 800Southbridge. Mass. WESO 970 Sweetwater, Tex. KXOX 1240So. Boston, Va. WHLF 1400 Sylacauga, Ala. W F EO 1340Southern Pines.M.C.WEEB 990WMLS 1290South Charleston, W. Va.Sylva, N.C. WMSJ 1480WROS 14<strong>10</strong> Sylvania. Ga. WSYL 1490South Daytona Beach, Fla, Sylvester, Ga. WOGA 1540WELE 1590 Syracuse, N.Y. WHEN 620So. Gastonia. N.C. WGAS 1420WFBL 1390So. Haven, Mich. W<strong>10</strong>R 940WNOR 1260So. Knoxville, Tenn. WSKT 1580WOLF 1490So. Paris. Me. WKTQ 1450WSYR 570So. Pittsburg, Tenn. W EPG 9<strong>10</strong> Tabor City, N.C. WTAR 1370Sa. St. Paul, Minn. Tacoma, Wash, KMO 1960KDWB 630KTAC 850So. Williamsport, Pa.KTNT 1400WMPT 1450KVI 570Spanish Fork. Utah KONI 1480 Taft. Calif. KTKR 13<strong>10</strong>Sparks, Nev. KBUB 1270 Tahlequah. Okla. KTLQ 1350Sparta, Ill. WHCO 1230 Tahoe Valley. Calif.Sparta, Tenn. WSMT <strong>10</strong>50KTHO 590Sparta. Wis. WKLJ 990 Talladega, Ala, WEYY 1580W CO W 1290W N U Z 1230Spartanburg. S.C. WHCQ 1400 Tallahassee, Fla. WMEN 1330WORD 9<strong>10</strong>WONS 14<strong>10</strong>WSPA 950WTAL 1450Spencer. Iowa KICD 1240WTNT 1270Spencer. W.Va. WSPZ 1400 Tallassee, Ala. WTLS 1300Spokane, Wash. KGA 15<strong>10</strong> Tallulah. La. KTLD 1960KONC 1440 Tampa. Fla. WALT <strong>11</strong><strong>10</strong>KSPO 1230WDAE 1250KPEG 1980WVOU 1550(HQ 590WFLA 970KNEW 790WHBO <strong>10</strong>50KREM 970WINO <strong>10</strong><strong>10</strong>KXLY 920WIMP <strong>11</strong>50(CIA 1330WSOL 1300KUDY 1280 Taos. N. Mex. KKIT 1340Sprin /dale, Ark, KBRS 1340 Tarbosg, N.C. WCPS 760Sprin /field. <strong>11</strong>1. WCVS 1450 Tarpot Springs. Fla.WMAY 970WCWR 1470WTAX 1240 Tasley, Va. WESR 1330Springfield, Mass. WHYN 560 Taunton. Mass. WI'EP 1570WMAS 1450 Tawas City. Mich. WIOS 1480WSPR 1270 Taylor. Tex. KTAE 1260Springfield. Mo. KGRX 1260 Taylorsville, N. C. WSTH 860KICK 1340WTLK 1570KITS 1400 Taylorville. Ill. WTIM 14<strong>10</strong>KWTO 560 Tazewell. Tenn. W NTT 1250Springfield. Ohio WIZE 1340 Tell City. Ind. WTCJ 1230WBLY 1600Springfield - Eugene.Tempe. Ariz. KUPD <strong>10</strong>60Ore.KEED <strong>11</strong>20KYND 1580Springfield. Tenn. WOBL 1590 Temple, Tex. KTEM 1400Springfield, Vt. WCFR 1480 Terre Haute, Ind. WROW 1230Springhill. La KBSF 1460WAAC 1300Spring Lake. N. C. WTHI 1480WFBS 1450 Terrell, Tex. KTER 1570Spring Valley. N.Y.Tarrytown, Nebr. KEYR 690WRRC 1300 Texarkana, Ark, KOSY 790LocationC.L.Ko.Texarkana. TeX. KCMC 740KATQ 940KTFS 1400Texas City, Tex. KTLW 920Thayer, Mo. (ALM 1290The Dalles. Oreg. KODL 1440KACI 1300Thermopolis, Wyo. KRTR 1490KTHE 1240Thief River Falls. Minn.(TRI 1230Thibodaux, La. KTIB 630Thomaston. Ga, WSFT 1220WTGA 1590WTHN 1500Thomasville, Ala. WJDB 630Thomasville. Ga. WPAX 1240WLDR 730Thomasville, N.C. WTNC 790Thomson. Ga. WTWA 1240Three Rivers, Mich, WLKM 15<strong>10</strong>Ticonderoga, N.Y. WIPS 1250Tiflln, Ohio WTTF 1600Tifton, Ga. WTIF 1340W W G S 1430Tillamook. Oreg. KTIL 1590Titusville, Fla. WRMF <strong>10</strong>50Titusville, Pa.Toccoa, Ga.WTIV 1230WLET 1420WNES 630Toledo, Ohlo WOHO 1470WSPD 1370WTOD 1560WCWA 1230WTTO 1520Toledo. Oreg. KTDO 1230Tolleson, Ariz. KROS <strong>11</strong>90Tomah, Wis. WTMB 1460Tompkinsville. Ky. WTKY 1370boodle, Utah KDYL 990Topeka. Kans. W I B W 580KEWI 1440WREN 1250KTOP 1490Toppenlsh, Wash. KENE 1490Torrington, Conn. WTOR 6<strong>10</strong>Torrington. Wyo. KGOS 1490Towanda. Pa. WTTC 1550Towson, Md. WAGE 1570Trail, B.C. CIAT 6<strong>10</strong>Travelers Rest. S.C.WBBR 1580Traverse City, Mich. WTCM 1400WCCW 13<strong>10</strong>Trenton, Mo. KTTN 1600Trenton, N.1. WAAT 1300WBUD 1260WTTM 920Trinidad. Colo, KCRT 1240Troy, Ala. WTBF 970Troy. N.Y. WHAZ 1330WTRY 990WXKW 1600Troy. N. C. W J R M 1390Truckee, Calif. «HOE 1400Trumann. Ark. KTMN 1530Truth or Consequences,New Mexico KCHS 1400Tryon, N.C. WTYN 1550Tucson. Ariz. KTUC 1400KXEW 1600KAIR 1490KCEE 790KTAN 580KCUB 1290KEVT 690KHOS 940KMOP 1330KFIF 1550KTKT 990(OLD 1450Tueumearl, N.Mex. KTNM 1400Tulare, Calif. KCOK 1270K EEN 1370Tulin. Tex. KTUE 1260Tullahoma. Tenn. WJIG 740Tulsa, Okla. KAKC 97nKOME 1300KRMG 740KELI 1430KV00 170K FMJ 050Tupelo, Miss. WELO 580WTUP 490Turlock. Calif. KCEY 390Tuscaloosa. Ala. WIRD 150WACT 420WNPT 280WTUG 790WTBC 230Tuscumbla. Ala. WVNA 590WRCK 4<strong>10</strong>Tuskegee. Ala. WABT 580Twenty -Nine Palms. Calif.KDHI 1250Twin Falls, Idaho KT Fl 1270KLIX 13<strong>10</strong>KEEP 1450Two Rivers, Wis. WTRW 1590Tyler, Tex. KDOK 1390KGJB 1490KTBB 600RADIO -<strong>TV</strong> EXPERIMENTER


Location C.L. Kc.KZEY 690Tyrone, Pa. WTRN 1340Uhrichsville, Ohio WUND 1540WBTC 1540Ukiah. Calif. KU KI 1400KMSL 1250Ulysses, Kan. KULY 1420Union. S.C. WBCU 1460Union City. Tenn. WENK 1240Uniontown. Pa. WMBS 590Urbana. Ill. WILL 580W K I D 1580Utica. N.Y. WIBX 950WBVM 1550WRUN <strong>11</strong>50WTLB 19<strong>10</strong>Utuado. P.R. WUPR 1530Uvalde, Tex. KVOU 1400Valdese. N.C. WSVM 1490Valdosta. Ga. WGOV 950WGAF 9<strong>10</strong>WJEM <strong>11</strong>50WVLD 1450Valentine, Nebr. KVSH 940Vallejo. Calif. KNBA <strong>11</strong>90Valley City, N.Dak. KOVC 1490Valparaiso- Niceville, Fla.WNSM 1340Valparaiso. Ind. WAYK 1500Van Buren. Ark. KFDF 1580Van Cleve. Ky. WMTC 730Vanceburg, Ky. W K KS 1570Vancouver. Wash. KISN 9<strong>10</strong>KKEY <strong>11</strong>50KGAR 1550Vandalia, Ill. WPMB 1500Van Wert. Ohio WERT 1220Venice, Fla. WAMR 1320Ventura. Calif. KVEN 1450KUDU 1590Vermillion, S.Dak. KUSD 690Vernal. Utah KVEL 1250Vernon, Tex. KVWC 1490Vero Beach. Fla. WAXE 1370WTTB 1490Vicksburg, Miss. WQBC 1420WVIM 1490Victoria. Tex. KNAL 14<strong>10</strong>KVIC 1340Vietorville, Calif. KCIN 1590Vidalia. Ga. WVOP 970Vieques. P.R. WIVV 1370Ville Platte, La. KVPI <strong>10</strong>50Vincennes. Ind. WAOV 1450Vineland. N.J. W W BZ 1360WDVL 1270Vivita, Okla. KVIN 1470Vinton. Va. WKBA 1550Virginia. Minn. WHLB 1400Virginia Beach. Va.WKVK 1550Virouqua. Wis. WISV 1360Visalia, Calif. KONG 1400Vivian, La. KLVI 1600Waco. Tex. WACO 1580KAWA <strong>10</strong><strong>10</strong>KBGO 1580KWTX 1233Wadena. Minn. KWAD 920Wadesboro, N.C. WADE 12<strong>10</strong>Wahpelon, N.D.Breckenridge,Minn. KBMW 1450Wailuku, Hawaii KMVI 550Wa,pahu, Hawaii KAHU 940Walhalla, S.C. WGOG <strong>10</strong>00Wallace. Idaho KWAL 620Wallace. N.C. WLSE 1400Walla Walla. Wash.(HIT 1320KU1 1420KTEL 1490Walnut Ridge, Ark. KRLW 1320Walsenburg, Colo. (ELI 1380Walterboro. S.C. WALD 1220Waltham, Mass. WCRB 1330Walton. N.Y. WDLA 1270Ward Ridge. Fla. WIDE 1570Ware, Mass. WARE 1250Location C.L. Kc.Warner Robbins, Ga.WRPB 1350Warren. Ark. KWRF 860Warren. Ohio WHHH 1440Warren. Pa. WNAE 13<strong>10</strong>Warrensburg. Mo. KOKO 1450Warrenton. Mo. K W RE 730Warrenton. Va. WEER 1250WKCW 1420Warsaw. Ind. WRSW 1480Warsaw. Va. WNNT 690WarwiekE.Greenwich, R.I.WYNG 1590Wasco, Calif. KWSO <strong>10</strong>50Washington. D.C. WGMS 570WMAL 630WOL 1450WOOK 1340W W DC 1260WRC 980WTOP 1500Washington. Ga. WKLE 1370Washington. Ind. WAMW 1580Washington, Iowa KCII 1380Washington. N.1. WCRV 1580Washington. N.C. WEEW 1320Washington. Pa.Washington CourtHouse. OhloWaterbury. Conn.WITN 930WJPA 1450WCHO 1250WATR 1320WBRY 1590WWCO 1240Waterbury, Vt. WDEV 550Waterloo, Iowa KXEL 1540KNWS <strong>10</strong>90KWWL 1330Watertown. N.Y. WATN 1240WOTT 14<strong>10</strong>WWNY 790Watertown. S.Dak. (SOR 1480KWAT 950Watertown, Wis. WTTN 1580Waterville, Me. W<strong>TV</strong>L 1490Watseka, III. W G FA 1360Watsonville, Calif. KOMY 1340Weuchula, Fla. WAUC 13<strong>10</strong>WPRV 1600Waukegan. Ill. WKRS 1220Waukesha. Wis. WAUK 15<strong>10</strong>Waupaca, Wis. WDUX 800Wausau, Wis. WRIG 1400WSAU 550WXCO 1230Waverly. Iowa K W V Y 1470Waverly, Ohio WPKO 1380Waverly, Tenn. WPHC 1540Waxahachie. Tex. KREC 1390Waycross. Ga. WACL 570WAYX 1230Waynesboro, Ga. WBRO 13<strong>10</strong>Waynesboro. Miss. WABO 990Waynesboro, Pa. WAYZ 1380Waynesboro, Va. WAYB 1490WANV 970Waynesburg, Pe. WANG 1580Waynesville, Mo. KJPW 1390Waynesville, N.C. WHCC 1400Weatherford. Tex. KZ EE 1220Webster City. Iowa KJFJ 1570Weed. Calif. KDAD 800Weirton, W.Va. WEIR 1430Weiser. Idaho KW EI 1260Welch. W.Va. WELC <strong>11</strong>50WOVE 1340Weldon, N.C. WCNF 1400Wellsbore, Pe. WNBT 1490Wellston. Ohio WKOV 1330Wellsville, N.Y. WLSV 790Wenatchee. Wash. KPO 560I


I1 WTIC1 KTGM1 MacombWNIITESG°3,63D00IC X6Location G.L. Mc.AthertonAuburnAvalonBakersfieldBerkeleyBijouCarlsbadCarmelClaremontCoachellaEl CajonEscondidoFremontFresnoKPEN <strong>10</strong>1.3KAFI <strong>10</strong>1.1KBIG <strong>10</strong>4.3KERN-FM 94.1KGEE-FM 97.51KIFM 96.5(PIA 94.<strong>11</strong>KPFB 89.3KPAT-FM <strong>10</strong>2.9KHUR 99.9KARL-FM 95.9KRML-FM <strong>10</strong>1.7KSPC '88.9KCHQ-FM 93.7KECR 93.3KOWN-FM 92.1KFMR <strong>10</strong>4.9 San JoseKARM-FM <strong>10</strong>1.9KCIB-FM 94.5KF RE-FM 93.7KM1 -FM 9KXQR <strong>10</strong>Location C.L. 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1Location C.L. Mc. lLoco tion C.L. Mc. Location C.L. Mc. Location C.L. 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WorthKIXL -FMK MAPKNERK RIDFMKLI F -FMW FAA -FMWHO;FMKTTKQROKBOX -FMKDNTFMKSPL -FMKDDD -FMKVOF -FMKTSM -FMKHMSWBAP -FMKFJZ -FMKJIM -FMKCUL -FMKNOK -FMK TCUFMKGAFFMKGBC -FMKELTKGRI -FMKPAN -FM<strong>10</strong>4.5<strong>10</strong>5.388.192.598.797.9<strong>10</strong>1.191.7<strong>10</strong>2.9<strong>10</strong>0.3<strong>10</strong>6.195.595.388.599.994.796.397.1<strong>10</strong>2.193.9<strong>10</strong>7.589.I94.5<strong>10</strong>6.594.5<strong>10</strong>0.1<strong>10</strong>6.3GainesvilleGalvestonHarlingenHendersonHerefordHighland Park - DallasKVIL -FM <strong>10</strong>3.7Hillsboro KHBR -FM <strong>10</strong>2.3Houston KHGM <strong>10</strong>2.9KHCBFM <strong>10</strong>5.7KHUL 95.7KFMK 97.9KODA -FM 99.1KLEF 94.5KOST <strong>10</strong>0.3KQUE <strong>10</strong>2.9KRBE <strong>10</strong>4.1KXYZ -FM 96.5KTRH -FM <strong>10</strong>1.1KUHF 91.3KBNO 93.7Hilleen KLEN -FM 93.3Humboldt WIRJ -FM <strong>10</strong>2.3Huntsville KSAM -FM <strong>10</strong>1.7Jasper KTXJ -FM <strong>10</strong>2.3Lake Jackson KLJT <strong>10</strong>7.3Lamesa KPET -FM <strong>10</strong>0.3Longview KLUE -FM <strong>10</strong>5.7Lubbock KSEL -FM 93.7KBFM 96.3KTXT -FM 91.9Marshall KMHT -FM 97.3Midland KNFM 92.3KMOD -FM 93.3Mt. Pleasant KIMP -FM <strong>10</strong>0.7Odessa KQIP 96.7KW MO 99.1KOCV 91.3KOYL -FM 97.9Pasadena KLVL -FM 92.5Plainview KHBL 88.1Port Arthur KFMP 93.3KPAC -FM 98.5San Angelo K W L W 93.9(SIT 97.5San Antonio KISS 99.5KEEZ 97.3KAKI -FM 98.1KITY 92.9KMFM 96.1Santon KTODFM <strong>10</strong>1.3Spearman KBMF -FM 98.3Temple KYLEFM <strong>10</strong>4.9Texarkana KTALFM 98.1KOSY -FM <strong>10</strong>2.5Tyler KZAK 93.1KDOKFM <strong>10</strong>1.5Victoria KTXN -FM 92.1Waco KEFC 97.5Wichita Falls KLUR 99.9KNTO 95.1EphraimLoganOgdenProvoSalt Lake CityUTAHKEPH 88.9KUBU-FM 91.5KBOC <strong>10</strong>1.9KBYU-FM 88.9KCPX-FM 98.7KLUB-FM 97.1KSL-FM <strong>10</strong>0.3KSOP-FM <strong>10</strong>4.3KWHO-FM 93.3LynchburgManassasMarionMartinsvilleNewport NewsNorfolkPortsmouthRadfordRichmondRoanokeSouth BostonSouth NorfolkStauntonSinolkWilliamsburgWinchesterWoodbridgeAberdeenBellinghamBremertonCentraliaCheneyCollege PlaceEdmundsEllensburgEugeneHoquiamLyndonOpportunityProsserSeattleSpokaneTacomaYakimaWAVA-FM <strong>10</strong>5.1WCCVFM 97.5WVVV <strong>10</strong>4.9WINA-FM 95.3WTJU 91.3WKEYFM <strong>10</strong>0.9WSVS-FM <strong>10</strong>4.7WFLO-FM 95.7WFVAFM <strong>10</strong>1.5WMNAFM <strong>10</strong>3.3WNRG-FM 97.7WVEC-FM <strong>10</strong>1.3WHOV 88.3WEMC 917WSVA-FM <strong>10</strong>0.7WWODFM <strong>10</strong>0.1WDMS-FM <strong>10</strong>1.7WPRWFM <strong>10</strong>8.7WMEVFM 93.9WMVA-FM 96.3WGH-FM 97.3WMTI 91.5WCMS-FM <strong>10</strong>0.5WNOR-FM 98.7WRVC <strong>10</strong>2.5WTARFM 95.7WXRI <strong>10</strong>5.3WYFIFM 99.7WAVYFM 96.9WRAD-FM <strong>10</strong>1.7WCOD 98.1WRFK 91.1WRVA-FM 94.5WRNL-FM <strong>10</strong>2.1WDB1-FM 94.9WLRJ 92.3WROV-FM <strong>10</strong>3.7WSLS-FM 99.1WHLF-FM 97.5WFOS 90.3WSGMFM 93.3W X Y W 92.9WCWM 89.1WRCI 96.5WRFL 92.5WXRA <strong>10</strong>5.9WASHINGTONWDUX-FM <strong>10</strong>4.7K GMIFM 92.9KERI <strong>10</strong>4.3KBRO-FM <strong>10</strong>6.9KGME-FM <strong>10</strong>2.9KEWC-FM 89.1KGTS 91.3KGFM <strong>10</strong>5.3KCWS-FM 91.5KBMC <strong>10</strong>4.5KHOK-FM <strong>10</strong>3.9KLYN-FM <strong>10</strong>6.5K ZUN-FM 96.1KACA <strong>10</strong>2.3KING-FM 98.1KBLEFM 93.3KETO-FM <strong>10</strong>1.5KGMI 95.7KIRO-FM <strong>10</strong>0.7KISW 99.9KLXN 96.5KMCS 98.9KOLFM 94.1KRAB <strong>10</strong>7.7KTW-FM <strong>10</strong>2.5KUOW 94.9KIXI-FM 95.7KRAM 92.5KREM-FM 92.9KXLY-FM 99.9KHQ-FM 98.1KCPS 90.9KLAY-FM <strong>10</strong>6.1KTNT-FM 97.3KTOY 91.7KTAC-FM <strong>10</strong>3.9KNDXFM <strong>10</strong>8.3WEST VIRGINIABeckleyWBKWBerkeley Springs WCST -FMBluefield WHIS -FMCharleston WKAZ -FMW KNAWTIOWVAFHuntingtonWKEE -FMWMULWVQMMartinsburg WEPMFMMorgantown WAJR -FMNorfolk WCMS -FMOak Hill WOAY -FMParkersburg WTAP -FMWCEF -FMWheeling WKWK -FMWW VA -FMWTRF -FM99.393.5<strong>10</strong>4.597.598.5<strong>10</strong>5.999.9<strong>10</strong>0.588.1<strong>10</strong>3.397.5<strong>10</strong>1.9<strong>10</strong>0.594.1<strong>10</strong>9.199.397.398.7<strong>10</strong>7.5OCTOBER- NOVEMBER, <strong>1965</strong>121


WMTE'8MD00ao@Location C.L. Mc. Location C.L. Mc. Location C.L. Mc.Greenfield Twp. WWCF 94.9 Monroe WEKZ -FM 93.7Highland WHHI 91 3 Mt. Horeb WFMKPUERTO RICO92.9Highland Twp. WHSA 89.9 Neillaville WCCNFM <strong>10</strong>7.5Janesville WCLO -FM 99.9 Platteville WSUP 89.5 Arecibo WNIK-FM <strong>10</strong>6.3Kenosha WLIP 95.1 Racine WRJN <strong>10</strong>0.7 Aguadilla WABA-FM <strong>10</strong>0.9La Crosse WH LA 90.3 WNY F-FM 92.1 Bayamon WRSJ-FM <strong>10</strong>0.7WWLA 99.3 Rice LakeMadisonWJMCFM 96.3 CarolinaWHA -FM 88.7WV02-FM <strong>10</strong>7.7Ripon WCWC -FM 95.9WIBA -FMFajardo<strong>10</strong>1.5' WMDD-FM 96.5Sauk CityWVLRWISMFM 98.196.7 GuayamaSparta WCOWFMWXRF-FM <strong>10</strong>6.997.1WMFM <strong>10</strong>4.1<strong>10</strong>) StevensMayaguezPoint WSPTFMWK1BFM97.999.1Location C.L. Mc.WRVB -FM <strong>10</strong>2.5 Superior WWJC -FM PonceMarinette<strong>10</strong>5.1WLEO-FM <strong>10</strong>1.9WNW) '91.5 TomahMarshfieldWTMRFM 98.9WPABFM 93.3WDLB -FM <strong>10</strong>6.5 Watertown WTTNFMWISCONSIN Merrill<strong>10</strong>4.7 San Juan WIPRFM 91.3WLIN <strong>10</strong>0.7 WaukeshaMilwaukeeWAUK -FM <strong>10</strong>6.1WIAC-FM <strong>10</strong>2.3AppletonWFMR 96.5WLFMWausau91.1WHRMWMIL -FM91.9WITA-FM 99.795.7WAPLFM <strong>10</strong>57WRI('.FM <strong>10</strong>1.9ChiltonWISN -FM 97.3 WauwatosaWOLA <strong>10</strong>5.7WH KW 89.3WTOS <strong>10</strong>3.7WRIT -FM <strong>10</strong>2.9Colfax WestWHWC 88.5Bend WBKV -FM 92.5DelafleldWMKE <strong>10</strong>2.1WHAD 90.7Whitewater WSUW 91.7 VIRGIN ISLANDSWQFMEau Claire99.9WIALWise.94.1Rapids WFHRFM <strong>10</strong>3.9WTMJ 94.5WEAU -FM <strong>10</strong>0.7WBON <strong>10</strong>7.7Fort Atkinson WFAW <strong>10</strong>7.399.1 WYOMINGGreen Bay WBAYFM <strong>10</strong>1.1 WUWM 89.7 Cheyenne KVWO -FM<strong>10</strong>6.3St. Croix, ChristianstedWIVI -FM 99.5Christiansted, St. CroixWIVI -FM 99.5CanadianAM Stations by LocationLocation C.L. Kc. Location C.L. Kc. Location C.L. Kc. Location C.L. Re.Abbotsford. B.C. CFVR 1240Altana, Man.CKCM 620CFAMOakville, Ont.1290CHWO 1250Amherst, N.S.CJCN 680CKDHOrillia. CKTS 900900 Gravelbourg.Ont.CFOR 1570Amos. Que.Sask.Simcoe,CFRGOnt.7<strong>10</strong>CF RS 1560CHADOshawa,1340Ont. CKLB 1350Antigonish, N.S.CFGRSmiths Falls,1230Ont.CJFXOttawa,CiET 630Ont.580 Guelph,CBO 9<strong>10</strong>Barrie.Ont.SmithersOnt.CJOYB.C.1460CFBV 1230CKBB 950 Halifax,CBOF 1250Bathurst.N.S.Sorel. Que.N.B.CBH 860CJSO 1320CKBC 1960CFRA 580Belleville. Ont.CHNSStratford. Ont. CJCS9601240CJBQ 800CKOY 13<strong>10</strong>Blind River. CHNXSteinbach, Man.Ont.6190CHSM 1250CJNR 730CKPM 1440Brampton. Ont.CICHStephenville.920NOd. CFSXCHICOwen9<strong>10</strong>Sound,790Ont.Hamilton.CFOS 560Brandon,Ont.Man.CHMLSudbury, Ont.900CKXParryCFBR 550Sound,<strong>11</strong>50Ont. CKAR -I 1340Brantford, CKOCOnt.<strong>11</strong>50CKPCPeaceCNNO 900River,1380Alta. CKYL 6<strong>10</strong>Bridgewater. N.S.CHIQ 1280CKBWPembroke,CKSO 790<strong>10</strong>00 Hauterive,Ont. CHOV 1350Que.Summerside,Brockville. CH LCOnt.580CFJRPenticton,P.E.I. CJRW 12401450 Huntsville.B.C. CKOK 800Cabana.Ont. CKARSwift Current.Que.630CJAFPeterborough,Sask. CKSW 14001240 Hull, Ont. CHQue.EX 980Calgary, Alta.CKCHSydney, N.S.970CBI <strong>11</strong>40CBR <strong>10</strong><strong>10</strong> Inuvik, N.W.T.CKPT 1420CHAK 860CFACPointeCJCB 1270960Claire, Que.Joliette.CFOX 1470Que.Terrace,CAMB.C.1350CFCNPortageCFTK 590<strong>10</strong>60La Prarie,Jonquiere.Man.Que. CKRSThetford Mines. Que.590CKLD 1230CHQR 8<strong>10</strong> Kamloops, CFRY 920B.C.Thomson.CFJCMan.9<strong>10</strong>CKXLPort Alberni,CHTM 6<strong>10</strong><strong>11</strong>40B.C.Kelowna.CJAV 1240B.C.Callender,CKOVTroisRivieres, Que.Ont.630CH LN 550CFCHPort Arthur,600 Kenora..Ont. CFPA 1230Ont.Campbell River,CJRL 1220CKTR <strong>11</strong>50B.C. Kentville,CKPR 580N.S.CFWBCKENTlllsonburg, Ont.1350 Prince 1490Albert.CKOT 15<strong>10</strong>Sask.Kingston, CKBI 900Ont.Timmins,Campbellton.CFRCOnt.1490N.B. CKNBPrinceCFCL 620950George. B.C. CKPG 550Camrose. Alta. CFCWCKLC <strong>11</strong>80 PrinceCKGB 680790Rupert. B.C. CFPR 860 Toronto.Causapseal, Que. CJBMCKWSOnt.960CBL 740Quebec,1450Que.Kirkland CBV 980Lake, Que.Charlottetown, P.E.I.CJKL 560CFRB <strong>10</strong><strong>10</strong>CFCY 630 Kitchener, CFOM 1340Ont. CKCR 1490CHFI 1540Chatham, Ont. CFCO 630 Kitimat. CH RC 800B.C.Chicoutimi,CKTK 1290CHUM <strong>10</strong>50Que. CO1 1580CJLR <strong>10</strong>60CKKW 1320CJBC 860Cl MT 1420 Langley, B.C.CKCV 1280Chilliwack, B.C.850CKEYCH W Quesnel,590K 1270B.C.LaCKCQ 570Sarre, Que-Churchill. Man. CHFCCKLS 1240CKFH 1490Red1230Deer, Alta.La Tuque,CKRD 850Que.Cabourg. Ont.CFLMTrail, B.C.1240CiAT 6<strong>10</strong>CHUG 1450Regina, Sask.Leamington.CBK 540Ont.Corner Brook, Nfld.CAPTruro, N.S.7<strong>10</strong>CKCL 600CBY Lethbridge. Alta.CIME 1900 ValCHECd'Or, Que.<strong>10</strong>90CKVD 1230CFCB 5<strong>10</strong>CKCK 620 Valleyfield. Que.Cornwall. Ont. CFMLC<strong>10</strong>C 1220CFLV 1370<strong>11</strong><strong>10</strong> Lindsay.CKRM 980Ont.Vaucouver, B.C.CJSSCKLY 9<strong>10</strong>CBU 690Richmond1220Hill. Ont. CFGM 13<strong>10</strong>Middleton. N.S.Courtenay, B.C.CKAD 1490CFUN 14<strong>10</strong>CFCP 1440Rimouski, Que.Lloydminster,CJBR 900Alta.Cranbrook, B.C. CKEKCKSA <strong>10</strong>80 RivieraCHQM 1320570du Loup. Que.London. Ont. CFPLCJOR980600Dartmouth. N.S. CFDR 790CiFP 1400CKSLCKLG 73014<strong>10</strong> Roberval. Que.Dauphin. Man. CKDMCHRL 9<strong>10</strong>730 Marystown, NOd. CHCMCKWX <strong>11</strong>30560 Rouyn. Que.Dawson Creek. B.C. CJDC 1350 Matane.CKRN 1400Que.Verdun, Que.CKBL 1250CKVL 850Ste. Anne de la Pocatiere, Que.Drumheller. Alta. CJDV 9<strong>10</strong> Medicine Hat. Alta.Vernon, B.C.CHATCJIB1270940CHGB 13<strong>10</strong>Drummondville. Que. CH RD 1340 Midland, Ont.Victoria. B.C.CKMPCFAX <strong>10</strong>701230 St. Bonitece, Man. CKSB <strong>10</strong>50Dryden, Ont. CKORMoncton,900N.B. CBAFCJVI 9001300 St. Catharines, Ont. CKTB 6<strong>10</strong>Duncan. B.C. CKAYCKCWCKDA 122015001220 St. Hyacinthe, Ont. CKBS 1240Mont Laurier. Victoriaville. Que.Que.Edmonton, AltaCKMLCFDA 13806<strong>10</strong>CBXSt. Jean. Que.740CHRS <strong>10</strong>90hMtontmagny, Ville Marie,Que.Que.CKBMCKVM 7<strong>10</strong>1490 St. Jerome. Que.CFRNCKJL 9001260 ontreal, VilleQue.St. Georges, Que.CBF 690 Saint John, N.B. CBN <strong>11</strong><strong>10</strong>CH ED 630CKRB 1460CBM 940 St. John's, Nfld. CBN 640 Wawa, Ont.CHFACJWA 1240680CFCF 600CJ0N 930 Welland, Ont.CICACHOW 1470930CFMB 14<strong>10</strong>VOAR 1230 Weyburn. Sask.CKUACFSL 1340580CIAD 800VOCM 590Edmundston,Whitehorse.N.B. CJEMY.T. CFWH 570570CJMS 1280VOWR 800 WilliamsEstevan. Sask.Lake,CALB.C. CKWL 12401280CKAC 730 St. Joseph d'Alma, Que.FlinWindsor.Flon.N.S.Man. CFARCFAB 1450590CKLM 1570CFGT 1270FortWindsor,Frances, Ont.Ont.CFOBCBE 1550800CKGM 980 St. Thomas, Ont. CHLO 680Fort Simpson, N.W.T.Moose CKLW 800Jaw. Sask. CHAO 800 Sackville, N.B. CBA <strong>10</strong>70CFMR 1490 Nanaimo.CKWW 580B.C. CHUB 1570 Saint John, N.B. CFBC 930 Wingham,FortOnt.St. John, B.C. CKNL 560 Nelson-CKNX 920B.C. CKLN 1390CHSJ <strong>11</strong>50 Winnipeg,Fort William. Man.Ont.CBW 990CJLX 800 New Carlisle, Que. .CHNC 6<strong>10</strong> Sarnia, Ont. CHOK <strong>10</strong>70Fredericton. N.B. CBZ 970 Newcastle.CJOB 680N.B. CKMR 790 Saskatoon. Sask. CFSN <strong>11</strong>70CJQM 1470CFNB 550 New Glasgow, N.S. CKEC 1320CFQC 600Gait. Ont.CKRC 690CFT1 <strong>11</strong><strong>10</strong> New Westminster, B.C.CKOM 1250Gander. Nfld.CJQM 1470CBG 1450CKNW 980 Sault Ste. Marie. Ont, CJIC <strong>10</strong>50C K YGoose Bay. Nfld.580CFGB 1940 Niagara Falls. Ont. CIRN 1600CKCY 920 Woodstock.Cranby.N.B.Que.CJCJ 920CHEF 1450 North Battleford, Sask. Sept-Iles. Que. CKCN 560 W oodstock,Grande Prairie. Ont-Alt.CKOX 1340CFGP IOSOCMS <strong>10</strong>50 Shawinigan. Que. CKSM 1220 Y armouth,Grand Bank. Nfld.N.S.CJOXCI LS 19407<strong>10</strong> North Vancouver, B.C. Shefferville, Que. CF Kt. 1230 YGrandellowknife.Falls, Nfld.N.W.T. CFYK 1340CBT 540CKLG 730 Sherbrooke. Que. CH LT 630 Y orkton, Sask. CJGX 940122RADIO -<strong>TV</strong> EXPERIMENTER


CJRT1Canadian FM Stations by LocationLocation C.L. Mc. Location C.L. Mc. Location C.L. Mc.Belleville.Ont. CJBQ -FM 97.1 Kitehener. Ont. CKRCFM 96.7Brandon, Man. CKXFM 96.1 Lethbridge. Alta. CH EC -FM <strong>10</strong>0.9Calgary. Alta. CHFM -FM 95.9 London. Ont. CFPLFM 95.9CBF-FM 95.1Cornwall.Montreal. Que.Edmonton Alta. CFRNFM <strong>10</strong>0.3CBMFM <strong>10</strong>0.7CJCA.FM 99.5 CFCF -FM 92.5CKUA -FM 98.1 CJFM -FM 95.9Halifax. N.S. CHNSFM 96.1 CJMS -FM 94.3Hamilton. Ont. CH ML-FM 95.3 CKGMFM 97.7Kamloops. B.C. CFFMFM 98.3 Oshawa, Ont. CKLBFM 93.5Kelowna. B.C. CJOV -FM <strong>10</strong>4.7 Ottawa. Ont. CBO-FM <strong>10</strong>3.3CKentville. N.S. CKWMFM 97.7Kingston, Ont. RC-Port Arthur, Ont.94.3CF F M 91.9CKWS -FM 96.3 Quebec, P.Q. CHRC -FM 98.1Red Deer, Alta. 6KRDFM 98.9Rimouski. Que. CJBRFM <strong>10</strong>1.5SaintCFBC-M 98.9Saskatoon Sask. CFMC -FM <strong>10</strong>3.9Sault St. Marie, 0CJIC -F M <strong>10</strong>0.5CKCY -FM <strong>10</strong>4.3Sherbrooke. Que. CH LT -FM <strong>10</strong>2.7St. Catharines. Ont.CKTB -FM 97.7St. Norbert (Winnipeg/. MMn98.3Sydney. N.S. CJCBF M 94.9Toronto, Ont C . CBC -FM 99.1Location C.L. Mc.CHFIFM 98.1CHU-FM-FM 91.1CKFMFM 99.9Vancouver. B.C.CFQMFM <strong>10</strong>3.5CKLG -FM 99.3Verdun. Que. CKVL -FM 96.9Victoria. B.C. CFMS -FM 98.5Windsor, Ont. CKLWFM 93.9Winnipeg. Man.CKQM -FM 94.3CKYFM 92.1World -Wide Short Wave Stationshe World -Wide short wave stations secdonof White's <strong>Radio</strong> Log is, as its nameimplies, a log, that lists stations actuallymonitored by listeners in the United States,Canada and overseas. It is not intended tobe a listing of all shortwave transmitters, licensedas such listings contain numerous inactivetransmitters, and low powered stationswhich are rarely-heard by DX'ers. The stationslisted here, therefore, are those mostoften reported and consistently heard duringthe past few months. Many have beenmonitored by DX CENTRAL, the officialRADIO -<strong>TV</strong> EXPERIMENTER monitoring postin New York City.Because of the fact that this log representsactual monitoring reports rather than datataken from published program schedules receivedfrom the stations, you may find thatfrequencies (and operating times) given herediffer from official listings. This is becauseforeign short -wave stations frequently operateseveral kilocycles away from their assigned(and announced) frequencies. In addition,the schedules of these stations areoften changed and the changes are not publishedin the schedules until many monthslater. We feel that the type of log whichWhite's <strong>Radio</strong> Log is presenting representsa very realistic picture of the current statusof short -wave broadcasting, and is somethingwhich cannot be obtained elsewhere.For the DX'er. If you care to roam thebands for DX, we present here some informationwhich will be of invaluable use toyou in tracking down DX stations.Although the current radio propagationconditions have made the high frequencybands (<strong>11</strong> and 13 meter bands) relativelypoor for DX'ers, the other bands are generallygood during certain periods of the year.OCTOBER- NOVEMBER, <strong>1965</strong>As a general rule, the following bands are"hot for DX" during the daily and seasonaltimes indicated:60 -meter band = Winter nights.49 -meter band = Winter nights.41 -meter band = Winter nights.31 -meter band-Nights, all year.25 -meter band = Nights, all year.19 -meter band =Days all year, andSummer nights.16- meter band =Days, all year, andSummer nights.13 -meter band-Days, all year.<strong>11</strong> -meter band =Days, all year.More on 61SL's. In a recent issue of RA-DIO-<strong>TV</strong> EXPERIMENTER We discussed the collectingof QSL cards from broadcastingstations, one of the finer aspects of the artof DX'ing. When our issue came out we receivedconsiderable mail asking about thepossibilities of QSL cards from non- broadcastingradio stations, such as hams, police,ships, etc.Ham stations generally swap QSL cardswith each other after a "contact," and agood percentage of ham operators will alsoQSL a monitoring report if they find it useful.The addresses of ham operators may beobtained from The <strong>Radio</strong> Amateurs Call -book which may be purchased at Ham radiostores or by mail from any of the majorparts supply houses.Pclice stations, ships, and other "odd ball"stations sometimes QSL, but generally theywill ignore your report unless you includewith it a prepared QSL card (stamped, too)which they can sign and return to you withoutmuch bother. The radio -telephone stationsfrequently heard with test tapes onsingle -sideband are tough to QSL becausethey prefer to keep their transmissions as un-123


WNBTE'S2L3,[ 0_Opublicized as possible. However, a nice lettermay get results.Citizens Band operators will frequentlyQSL SWL reports, but finding their addressesis a problem because of the absence of adequatecallbooks. Each month there is a listingof about <strong>10</strong>00 CB operators in S9 Magazine,which is available on many newsstandsthroughout the United States and Canada.In our listings, a station or frequencymarked with an asterisk ( *) indicates a non -broadcast station or frequency. This mightinclude aeronautical, maritime, military, orother type of transmission, either in regularAM or single sideband (SSB). In instanceswhere many non -broadcast stations use thesame frequency, we have given you a clueas to the type of stations to be foundratherthere,than pin down only one station.Let Us Know. Listeners are invited tosubmit their loggings to us for publicationin the Shortwave section of White's <strong>Radio</strong>Log. Be sure to include the following informationfor each station you report: approximatefrequency, callsign and /or station name,city and country, and time heard in EasternStandard Time, 24 hour clock. Address yourreports to: DX CENTRAL, White's <strong>Radio</strong>Log, c/o RADIO -<strong>TV</strong> EXPERIMENTER, 505Park Avenue, New York, N. Y. <strong>10</strong>022,U.S.A.Time To Listen. All times shown inWhite's <strong>Radio</strong> Log are in the 24 hour ESTclock system. For example, 0800 is 8:00AM EST, 1200 is noon EST, 1800 is 6 PMEST, and so on. For conversion to othertime zones, subtract 1 hour for CST (0800EST is 7 AM CST), 2 hours for MST, 3hours for PST.The following abbreviations are used inour listings: BC- Broadcasting Company,Corporation, or System; E- Emissora; R-<strong>Radio</strong> or <strong>Radio</strong>diffusion; V -Voice or Voz.TNX. We are indebted to the followingDX'ers who added their loggings to those ofDX CENTRAL, the official RADIo-<strong>TV</strong> Ex-PERIMENTER monitoring station in NewYork City, to bring you this month's listings:Doug McKirahan, Oak Park, Ill.Chris Thompson, Rexdale, Ont.Carl Dyrnavich, Riverdale, Ill.Steven & Larry Levine, West Hartford, Conn.Phyllis J. Kline, Coventry, R.I.Terry Silvernail, Lake Worth. Fla.Ronald Tlachac, Marshfield, Wisc.Jess Dyer, Dearborn, Mich.Steve Wilkes, Dallas, Tex.Frank Priore, College Pt., N.Y.Julian Sienkiewicz, Brooklyn, N.Y.Robert D. Fontaine, Natick, Mass.Doris Lautrisi, West Warwick, R.I.Bruce Zuckerman, Clark, N.J.H. Handrei, Burnaby, B.C.James Palmer, Deer Park, N.Y.Noel M. Moss, New York, N.Y.Tom Kneitel, New York, N.Y.David Wynn, Elysburg, Pa.Philip A. Jones, Whittier, Calif.John T. Casey, Charlestown, Mass.Alan Statman, Caldwell, N.J.Wade M. Smith, Wayne, Pa.S. Leo Bance, Norwalk, Calif.Ira Schultz, White Plains, N.Y.Edward T. Zebrowski, Holyoke, Mass.Darrel Bender, Camp Hill, Pa.Lud Elliman, Damariscotta, Me.Alfred H. Howe, Candor, N.Y.Karl Simmons, Jacksonville, Fla.Allan Cunningham, Willowick, OhioL. Bruce Meyer, Portland, Ore.Jon B. Elso, Manchester, Mass.Rick Slattery, Miami, Fla.Frank J. Miller, Hampstead, Md.Dale Koby, Van Nuys, Calif.John J. Herro, Glenview, Ill.Dave Schmidt, Green Ridge, Pa.Andrew G. Rekay, Chicago, Ill.Steve Congdon, East Homer, N.Y.Roger Camire, Manchester. N.H.F. R. Lane, Wellesley, Mass.Richard G. Abrams, Norwalk, Conn.Marian K. Ely, Delray Beach, Fla.Townsend F. Groce, Coatesville, Pa.Bruce Robertson, West Hill, Ont.124Kc /s Call Name2355 Zambia3240 BCR. Brazzaville3250 ELWA R. Village3270 - Zambia BCShort -Wave ListingsLocationESTLusaka, Zambia 0005Brazzaville, Congo 0000Monrovia, Liberia 1645Lusaka, Zambia 0005Kc /s Call Name Location3315 - R-Tv Francaise Ft. de France,Marnue3356 - R. Bechuanaland G beronéBechuanalandEST0530<strong>10</strong>00RADIO -<strong>TV</strong> EXPERIMENTER


Kc /s Call Name Location3620 HC2KH R. el Sagrario Guayaquil, Ecu.3704 CR6RD R. Club do Huambo Huambo, Angola39<strong>10</strong> - Far East Network Tokyo, Japan3980 - R. Commercial Sa da Bandeira,Angola60 Meter Band -4750 to 5060 Kc /s4750 HCBK2 R. El MundoEST23000<strong>10</strong>004000030Gaya uil, 22004765 - R. Brazzaville Brazzaville, Congo 000047<strong>10</strong> ELWA R. Village Monrovia, Liberia 1720HCMX4 R. Cenit Portoviejo, Ecuador 2320- R. Comercial Sa da Bandeira,Angola 00304780 YVLA V. de Carabobo Valencia, Venezuela 2120HCLCI R. Atahualpa Quito, Ecuador 23204795 CP73 R. Nueva America La Paz, Bolivia 205048<strong>10</strong> HCFA4 V. de Manabi Portoviejo, Ecuador 0<strong>10</strong>04850 - Mauritius BC Forest Side,Mauritius 08004861 OAZ4T R. Chanchamayo La Merced, Peru 19004867 HJFV R. Neiva Neiva, Colombia 23304870 - R. Cotonou Cotonou, Dahomey 1630YVKP R. Tropical Caracas, Venezuela 19004890 YVKB R. Venezuela Caracas, Venezuela 222849<strong>11</strong> - Zambia BC Lusaka, Zambia 02454913 HCMJI R. Gran Colombia Quito, Ecuador 0030VTW2 R. Tarawa Tarawa, Gilbert &Ellice Is. 02304916 - R. Trebol Zaruma, Ecuador 22304921 OBX7H Ondas del Titicaca Puno, Peru 21304923 HCQRI R. Quito Quito, Ecuador 00304926 EAJ206 R. Ecuatorial Bata, Sp. Guinea 16404940 YVMO R. Lara Barquisimeto,Venezuela 19304943 HCXZI R. Nacional Quito, Ecuador 20304970 - R. Mogadiscio Mogadiscio,Somalia 1415YVLK R. Rumbos Caracas, Venezuela 22005020 - R. Cronos Barquisimeto,19305035 - R. Bangui Bangui,i, Centr. 17<strong>10</strong>5042 CR6RF R. Clube Benguela Benguela, Angola 00505065 CR6RD R. Clube Huambo Huambo, Angola 0<strong>10</strong>05075 HJGC R. Sutatenza Sutatenza,Colombia 20225095 HJGC R. Sutatenza Sutatenza,Colombia 20255805 - R. Sanaa Sanaa, Yemen 223049 Meter Band -5950 to 6200 Kc /s5950 - R. Warsaw5960 - Trans World R.5970 R. BrazzavilleCKNA R. Canada5980 Lebanese BC5990 Malawi BC5995 R. Warsaw6000 - R. Americas60<strong>10</strong> ETLF R. V. of Gospel6035 - V. of America6050 - R. UnionR. Moscow6060 - R. Havana6065 ZYR3 R. Nacional6070 - R. el Condor6075 DMQ6 Deutsche Welle6080 V. of AmericaR. Stanleyville6090 - R. Koduna6<strong>10</strong>0 DMQ6 Deutsche Welle- R. Belgrade6<strong>10</strong>9 YVPN R. Escuelas R.6<strong>11</strong>5 - R. Reloj6120 HERS Swiss BC6125 CP15 R. el Condor6130 LKJ R. Norway6140 TISRHB2 R. PopularOCTOBER-NOVEMBER, <strong>1965</strong>Warsaw, Poland 1630Monte Carlo,Monago 1430Brazzaville, Congo 0000Montreal, Que. 0230Beirut, Lebanon 0915Zomba, Malawi 1<strong>10</strong>0Warsaw, Poland 0600Swan Island 2227Addis Ababa,Ethiopia <strong>10</strong>45Monrovia, Liberia 1715Pt. au Prince. Haiti 2<strong>10</strong>0Moscow USSR 1440Havana, Cuba 2<strong>10</strong>0Brazilia, Brasil 1800La Paz, Bolivia 1800Cologne,W. Germany 1445Tangiers, Morocco 1740Stanleyville, Congo 0015Koduna, Nigeria 0030Cologne,W. Germany 2130Belgrade,Yugoslavia 1330San Fernando,Venezuela 1930Lima(?), Peru 2<strong>10</strong>0Berne. SSwitz. 2015La Paz Bolivia 1800Oslo, Norway 0700San Jose.Costa Rica 2230Kc /s Call Name Location EST6145 DMQ6 Deutsche Welle Cologne,W. Germany 20006150 HCEM4 R. Costa Azul Portoviejo, Ecuador 2320- R. Bucharest Bucharest, Rumania 1730- R. South Africa Capetown,S. Africa 22006160 - R. Algiers Algiers, Algeria 1530CKZU CKZU Vancouver, B.C. 16226165 - Zambia BC Lusaka, Zambia 03456175 - R. Guarani Belo Horizonte,Brazil00456180 VUD All India R. Delhi, India 13456185 LLI R. Norway Oslo, Norway 00006190 - R. Bucharest Bucharest, Rumania 17306195 - R. Burundi Usumbura, Burundi 00006202 TIJCV R. Atenas Atenas, Costa Rica 180062<strong>10</strong> - R. Tabriz Tabriz, Iran 13206540 - R. Pyongyang Pyongyang,03<strong>10</strong>66<strong>10</strong> R.7090 - R.Atlantico Las Palmas,Canary Is. 1400Tirana Tirana, Albania 013541 Meter Band -7<strong>10</strong>0 to 7300 Kc /s7<strong>10</strong>5 7<strong>11</strong>3 7125 7130 BED77135 7145 7150 7160CR6RD7170 7185 -R. BrazzavilleGorovit VilnusR. WarsawV. Free ChinaR. TehranR. WarsawR. ComercialR. MoscowR. Clube HuamboNat'l BC Service- R. Thailand7195 - R. Bucharest7200 - R. BelgradeGorovit Vilnus7220 - R. Australia722572407260DM- Q7R. BucharestR. MoscowR. MoscowDeutsche Welle7265 - R. Lome7267 - R. Addis Ababa7270 R. Warsaw- R. South Africa7275 - V. Nigeria7285 - R. WarsawVUD All India R.N.H.K.73<strong>10</strong> - Gorovit Vilnus7340 - R. Moscow7580 - R. Pyongyang7670 - Sawt Al Islam9009 4XB31 Kol Zion9360 R. Nacional9390 -R. Tirana94<strong>10</strong> GRI BBC9450 OAX4W R. Americas9480 -R. Moscow9485 4VC R. ComerteBrazzaville, Congo 0000Vilnus,Lithuanian SSR 1800Warsaw, Poland 0130Taipei, Formosa <strong>10</strong>30Tehran, Iran 1830Warsaw, Poland 1630Sa da Bandeira,Angola 0030Moscow, USSR 1500Huambo, Angola 0<strong>10</strong>0Leopoldville,CongoVilnus,2300Lithuanian SSR 1800Bangkok, Thailand 2315Bucharest, Rumania 1730Belgrade,Yugoslavia 1330Melbourne,Australia <strong>10</strong>30Bucharest, Rumania 1430Moscow, USSR 0200Moscow, USSR 1600Cologne,W. Germany 1445Lome, Togo 0700Addis Ababa,Ethiopia IIISWarsaw, Poland 0600Capetown,South Africa <strong>11</strong>50Lagos, Nigeria 0800Warsaw, Poland 0600Delhi, India 1345Tokyo, Japan 0215Vilnus,Lithuania SSR 1800Moscow, USSR 1440Pyongyang,N. Korea 0500Jedda,Saudi Arabia 1200Jerusalem, Israel 1545Madrid, Spain 1520Tirana, Albania 1640London, England 1330Lima, Peru 2200Moscow, USSR 0200Pt. au Prince, Haiti 2<strong>10</strong>031 Meter Band -9500 to 9775 Kc /s9505 - R. Belgrade95<strong>10</strong> GSB BBCR. Bucharest9515 - R. Kuwait9525 - R. South Africa9530 DMQ9 Deutsche Welle9540 - AnkhararaiUlanbatrasBelgrade,Yugoslavia <strong>10</strong>30London, England 1735Bucharest, Rumania 1430Kuwait 1615Ca petown,South Africa 0945Cologne,W. Germany 1445Ulan Bator,Mongolia 1630125


WHITE'S Kc /s Call Name Location ESTn <strong>11</strong>730 R. Brazzaville Brazzaville, Congo 1200<strong>11</strong>730 R. Tehran Tehran Iran1830<strong>11</strong>735 - R. Belgrade Belgrade,j Yugoslavia <strong>10</strong>30I <strong>11</strong>738 XEMP La Charifa dgl Mexico. D.F.Cuad. Mexico 1600<strong>11</strong>740 - For East BC Manila,u` L /rat \3Kc /s Cal/ Name Loca /tonPhilippines 2<strong>10</strong>0ESTCE<strong>11</strong>74 R. Nuevo Mundo Santiago, Chile 9009545 DMQ9 Deutsche Welle Cologne, <strong>11</strong>755 ETLF R. V. of Gospel Addis Ababa,W. Germany 2130 Ethiopia 330- Lebanese BC Beirut, Lebanon 0430 - BBC London, England 7359550 LLD R. Norway Oslo, Norway 0000<strong>11</strong>760 - R. V. of Vietnam Hanoi, N. Vietnam 9009555 YSS R. Nacional San Salvador, <strong>11</strong>765 - R. Sofia Sofia, Bulgaria 400El Salvador 2035 R -<strong>TV</strong> Francaise Paris, France 3309560 - Gorovit Yerevan Yerevan, <strong>11</strong>785 DM- QI I Deutsche Welle Cologne,Armenian SSR 1515W. Germany 445<strong>11</strong>790 -- V. of Holy Land Amman, Jordan 2000 AFRTS Los Angeles,9560 Calif. 2120PCJ R. Nederland Hilversum, Neth. 1300<strong>11</strong>795 DMQ<strong>11</strong> Deutsche Welle Cologne,- R. Australia Melbourne, - Nat'l BC Svce. Leopoldville,Australia 0230 Congo 2300W. Germany 2000<strong>11</strong>800- - R. Nac. de Espana Tenerife,RAI Rome, Italy 14<strong>10</strong> Canary Is. 19009562 OAX4R R. Nacional Lima, Peru 2318 W. Germany 04159570 - R. Bucharest Bucharest, Rumania 1430 - R. Berlin Intl Berlin, E. Germany 1<strong>10</strong>09575 DMQ9 Deutsche Welle Cologne, YDF3 R. Repub. Indonesia Djakarta, Indonesia 12009580 BBC Nicosia, Cyprus 1315 - R. Ceylon Colombo, Ceylon95902030R. Bucharest Bucharest, Rumania 1730<strong>11</strong>805 ZYZ36 R. Globo Rio de Janeiro,9600 - R. Australia Melbourne, Australia Brazil 18501430 <strong>11</strong>8<strong>10</strong> - Lebanese BC Beirut, Lebanon 1500- R. Moscow Moscow, USSR 0200 - R. Bucharest Bucharest, Rumania 17309605 DMQ9 Deutsche Welle Cologne, <strong>11</strong>815 ZYW24 R. Brazil Cent. Rio de Janeiro,W. Germany 1808 Brazil96<strong>10</strong>0400LLG R. Norway Oslo, Norway 1900 <strong>11</strong>820 - R -<strong>TV</strong> Ivorienne Abidjan,OAX8C R. Nacional Iquitos, Peru 0600 Ivory Coast 07459625 CKLO R. Canada Montreal, Que. 0230 <strong>11</strong>825 BED69 V. of Free China Taipei, Formosa <strong>10</strong>30PCJ R. Nederland Hilversum, Neth. 0900 <strong>11</strong>830 - R. Moscow Moscow, USSR 0200Kol Zion9635 Jerusalem, Israel 1545 <strong>11</strong>835 R. Algiers Algiers, Algeria 1530V. of West Lisbon, Portugal 1700 4VEH V. Evangelique Cap Haitian, Haiti 17009640 - R. Conakry Conakry, <strong>11</strong>840 - R. V. of Vietnam Hanoi, N. Vietnam 2300Guinea Rep. 1700 R. Australia Melbourne,9640 DMQ9 Deutsche Welle Cologne, Australia 1930W. Germany 1330 V. of West Lisbon, Portugal 1700Trans<strong>11</strong>845 World - R R. Bonaire,-<strong>TV</strong> Francaise Paris, France 1330<strong>11</strong>850 LLKNeth.R.Ant. 1600Norway Oslo, Norway 07009645 TIFC r Faro del Caribe San Jose, - Ankhararai Ulan Bator,Costa Ulanbatrasica 0800Mongolia 16309651 R. Maldive Isl. Matadi ZPA3 R.e Is. 0230Teleco Asuncion, Paraguay 19009660 - <strong>11</strong>855Lebanese BC-Beirut, Lebanon 2330Sawt Al Islam Jedda,R. Nacional Tenerife, Saudi Arabia 1200de Espana Canary Isl. 0900 R. Paranaense Paranaense, Brazil 04009675 R. Warsaw <strong>11</strong>860Warsaw BED45Poland V.0600of Free China Taipei, Formosa <strong>10</strong>309690 V. Nigeria Lagos, Nigeria 0800<strong>11</strong>865 R. Havana Havana, Cuba 22009700 R. Sofia<strong>11</strong>870Sofia Bulgaria-1400Nat'l BC Service Leopoldville,97<strong>10</strong> - Far East BC Manila,Congo 2300<strong>11</strong>875 ETLF R.Philippines V.2<strong>10</strong>0of Gospel Addis Ababa,R. Moscow Moscow, USSR 0200Ethiopia 1200LR- X2 R. El Mundo ZYN32 R Buenos Aires, Arg. 2350Soc. de Bahia Bahia, Brazil 0400OAX9D R. Tropical <strong>11</strong>880 XEHH R.Tarapoto, Peru 0600Comerciales Mexico D.F.,9725 N.H.K. Tokyo, Japan 0455Mexico 17<strong>10</strong>4X851 Kol Zion <strong>11</strong>885 ORU RJerusalem, Israel 1545-<strong>TV</strong> Belge Brussels, Belgium 16159730 - R. Brazzaville<strong>11</strong>900Brazzaville, - V.Congo 0000of Nigeria Lagos, Nigeria 08009735 DMQ9 Deutsche Welle R.Cologne,S. Africa Capetown,W. Germany 0415 S. Africa 05009740 R. Pakistan <strong>11</strong>920Karachi,DZF2PakistanFar1445East BC Manila,9752 - R. Pyongyang Pyongyang, Philippines 0330N. Korea 05009755 ETLF R. V. of Gospel Addis Ababa, Windward I. BC St. Georges,Ethiopia <strong>10</strong>00 Grenada 17<strong>10</strong>9760 TGWB V. <strong>11</strong>935de Guatemala Guatemala City,Lebanese BC Beirut, Lebanon 1830Guat. 1740 R. Brazzaville Brazzaville, Congo 1330R. V. of Vietnam <strong>11</strong>940Hanoi, N. Vietnam- R.1900Japan Tokyo, Japan 0<strong>11</strong>5<strong>11</strong>930 - R. Moscow Moscow, USSR 0700 e9780 - R. Moscow Moscow, USSR 0700 -R. Bucharest Bucharest, Rumania 1730Windward <strong>11</strong>945I. BC St. Georges,MCO BBC London, England 0955<strong>11</strong>950 PCJ R. Grenada Nederland 1615Hilversum,9840 - R. V. of Vietnam Hanoi, N. Vietnam 2330 Netherlands <strong>10</strong>309915 VUD All India 1<strong>1965</strong>R. Delhi, IndiaDMQII Deutsche1345Welle Cologne,<strong>11</strong>672 - R.Pakistan Karachi, Pakistan 1445 W. Germany <strong>10</strong>20<strong>11</strong>970 PCJ R. Nederland Hilversum,Netherlands 1300<strong>11</strong>975 - R. Brazzaville Brazzaville, Congo 0600R. Peking Peking, China 070025 Meter Band-I1700 to <strong>11</strong>975 Kc /s12095 GRF BBC London, England 130014530 - R. Pyongyang Pyongyang,N. Korea 200015050 - R. Peking Peking, China 2000<strong>11</strong>700 R. Moscow Moscow, USSR 0700<strong>11</strong>7<strong>10</strong> - R. Australia Melbourne,15060 - R. Peking Peking, China 070015070 GWC BBC London, England 173515095 - R. Peking Peking, China 0700Australia 0015R. Brazzaville Brazzaville, Congo 0000<strong>11</strong>715 - R. Australia Melbourne.Australia 1700 19 Meter Band -15<strong>10</strong>0 to 15450 Kc /s<strong>11</strong>720 - V. of Nigeria Lagos, Nigeria 0800CHOL R. Canada Montreal, Que. 1330126RADIO -<strong>TV</strong> EXPERIMENTER


Kc /s Call Name Location EST15<strong>10</strong>0 - R. V. of Vietnam Hanoi, N. Vietnam 1900151<strong>10</strong> - R<strong>TV</strong> Francaise Paris, France 0505ZL4 R. New Zealand Wellington, N.Z. 234515<strong>11</strong>5 - R. Peking Peking, China 0700HCJB V. of the Andes Quito, Ecuador 153015125 - V. of Free China Taipei, Formosa <strong>10</strong>30V. of West Lisbon, Portugal 170015135 - V. of Free Korea Seoul, Korea 0130- R. Havana Havana, Cuba 1550R. Tehran Tehran, Iran 030015140 ETLF R. V. of Gospel Addis Ababa,Ethiopia 081515150 - V. of America Okinawa 193015155 - R. Havana Havana, Cuba 15<strong>10</strong>- R. South Africa Capetown,S. Africa 0500Vatican <strong>Radio</strong> Vatican City 063015160 TA- U R. Ankara Ankara, Turkey 170015165 OZF7 V. of Denmark Copenhagen,Denmark 070015175 LIM R. Norway Oslo, Norway 070015180 - R. Australia Melbourne,Australia 001515185 01X4 Finnish BC Pori, Finland 094515190 - R. Brazzaville Brazzaville, Congo 060015205 DMQ15 Deutsche Welle Cologne,W. Germany 041515220 - R. Australia Melbourne,Australia 0015PCJ R. Nederland Hilversum,Netherlands 130015225 Swiss BC Berne, Switz. 0330R. Afghanistan KabulAfghanistan 130015240 R. Sweden Stockholm,Sweden 0900R. Australia Melbourne.Australia 1700- R. Belgrade Belgrade,Yugoslavia <strong>10</strong>3015250 - R. Bucharest Bucharest, Rumania <strong>10</strong>0015255 - V. of Nigeria Lagos, Nigeria 080015275 DMQ15 Deutsche Welle Cologne,W. Germany <strong>10</strong>2015280 - R. New Zealand Wellington, N.Z. 2345152<strong>10</strong> - Trans World R. Nonaire,Neth. Ant. 1830R. Cfube de Lourenco Marques,Mozambique Mozambique <strong>11</strong>3015300 - R. Havana Havana, Cuba 16<strong>10</strong>GWR BBC London, England <strong>10</strong>15DZH9 Far East BC Manila,Philippines 1815R. Sweden Stockholm, Sweden 090015305 - Swiss BC Berne, Switz. 0330Kc /s Call5315 5320 CKNC5330 5340 5350 -5380 DZF35425 PCJ5430 -15440 W R U L15445 15448 15470 -NameLocationESTR. Bucharest Bucharest, Rumania <strong>10</strong>00R. Canada Montreal, Que. 1330AFRS New York N.Y. 0830R. Havana Havana, Cuba 1800AFRS New York, N.Y. 0830Far East BC Manila,Philippines 1930R. Nederland Hilversum,Netherlands 0900Far East BC Manila.Philippines 0730AFRTS New York, N.Y. 0830R. N.Y. Worldwide New York, N.Y. 0700R. Brazzaville Brazzaville, Congo <strong>10</strong>00R. Prague Prague, Czech. <strong>11</strong>25R. Moscow Moscow, USSR 070016 Meter Band -17700 to 17900 Kc /s77<strong>10</strong> DZ16 Far East BC Manila,Philippines 19307715 - R. Australia Melbourne.Australia 18357720 - R. Brazzaville Brazzaville. Congo 07307730 WRUL R. N.Y. Worldwide New York, N.Y. <strong>10</strong>007840 WRUL R. N.Y Worldwide New York, N.Y. 1<strong>10</strong>07815 WRUL R. N.Y. Worldwide New York. N.Y. 07457750 - Austrian <strong>Radio</strong> Vienna, Austria 020078<strong>10</strong> - Austrian <strong>Radio</strong> Vienna, Austria 04007820 - R. Australia Melbourne,Australia 00157820 CKNC R. Canada Montreal Que. 1330TAV R. Ankara Ankara, `Turkey 09157825 LLN R. Norway Oslo, Norway 07007830 - Swiss BC Berne, Switz. 03307840 - R. Australia Melbourne,Australia 143017855 -17875 -17890 BED40HCJB179<strong>10</strong> -18195 -21470 GSH21500 21540 21590 -21730 LLQR. Sweden Stockholm, Sweden 0900AFRTS New York, N.Y. 0830R. Japan Tokyo, Japan 1600V. of Free China Taipei, Formosa <strong>10</strong>30V. of The Andes Quito, Ecuador 1530R. Ghana Accra, Ghana 0945R. Pyongyang Pyongyang,N. Korea 0<strong>10</strong>0BBC London, England <strong>10</strong>15R. Brazzaville . Brazzaville, Congo 0600R. Ghana Accra, Ghana 0945R. Pakistan Karachi, Pakistan 0345R. Norway Oslo, N Norway 0700DF for CBcontinued Jrum page <strong>10</strong>0it is mounted on. The sensitivity differencecan be handled by rotating the car: First, afix would he taken from a parked vehicle.Then, the car would be turned around 180degrees. The side that produces the higherof the two signal levels is the direction ofthe unknown signal. Note that only thevehicle is moved, not the DF loop. Once theloop has been adjusted for bearing (minimumsignal) it is not touched, only the caris moved.Of course, DF'ing is easier if two stationsuse the well known triangulation method.One DF takes a bearing and plots the pointerbearing on the map. The second DF locatedsome distance from the first takes its bearingand its pointer hearing is entered on theOCTOBER-NOVEMBER. <strong>1965</strong>map. At the intersection of the two linesdrawn through the DF pointers lies the "loststation ".When triangulation cannot be used, andwhen you don't feel like jockeying the cararound, you can use the old S -meter search.Connect the DF, determine the pointerposition, then reconnect the main antennaand drive in the direction indicated bythe pointer. If the signal level increasesyou're headed in the right direction. If thesignal level decreases turn around and headin an opposite direction to the pointer.Whether your CB direction finding purposesbe either public service or fun, theSignal Hunter direction finding CB antennacan put a little of the old zing back intoCB'ing. Priced at $9.95, the Signal- Hunteris available from electronic distributors suchas Lafayette <strong>Radio</strong> or direct from the manufacturer,Gold Line Co., Dept. 756, MullerAvenue, Norwalk, Conn. 06852.127


ELECTRONIC PARTS1. This catalog is so widely used asa reference book, that it's regardedas a standard by people in the electronicsindustry. Don't you have thelatest Allied <strong>Radio</strong> catalog? The surprisingthing is that it's free!2. The new 516 -page <strong>1965</strong> edition ofLafayette <strong>Radio</strong>'s multi -colored catalogis a perfect buyer's guide for hifi'ers,experimenters, kit builders,CB'ers and hams. Get your free copy,today!3. Progressive "Edu- Kits" Inc. nowhas available then new <strong>1965</strong> catalogfeaturing hi-ti, CB, Amateur, testequipment in kit and wired form.Also lists books, parts, tools, etc.4. We'll exert our influence to getyou on the Olson mailing list. Thiscatalog comes out regularly with lotsof new and surplus items. If you findyour name hidden in the pages, youwin $5 in'free merchandise!5. Unusual scientific, optical andmathematical values. That's what LamundScientific has. War surplusequipment as well as many otherhard -to-get items are included in thisnew 148 -page catalog.6. Bargains galore, that's what's instore! Poly -Paks Co. will send youtheir latest eight -page flyer listing thelatest in merchandise available, includinga giant $1 special sale.7. Whether you buy surplus or new,you will be interested in Fair <strong>Radio</strong>Sales Co.'s latest catalog -chuck fullof buys for every experimenter.8. Want a colorful catalog ofgoodies? John Meshna, Jr. has onethat covers everything from assembliesto zener diodes. Listed are governmentsurplus radio, radar, parts, etc.All at unbelievable prices.9. Are you still paying drugstoreprices for tubes? Nationwide TubeCo. will send you their special bargainlist of tubes. This will make you lightup!<strong>10</strong>. Burstein -Applebee offers a newgiant catalog containing <strong>10</strong>0's of bigpages crammed with savings includinghundreds of bargains on hi -fi kits,power tools, tubes, and parts.<strong>11</strong>. Now available from ED! (ElectronicDistributors, Inc.) a catalogcontaining hundreds of electronicitems. EDI will be happy to place youon their mailing list.12. VHF listeners will want thelatest catalog from Kuhn Electronics.All types and forms of complete receiversand converters.LITERATURELIBRARY\a tit hers in heavy type indicatea(I ertisers in this issue. Consulttheir ads for additional information.23. No electronics bargain huniershould be caught without the latestcopy of <strong>Radio</strong> Shack's catalog. Someequipment and kit offers are so low,they look like mis- prints. Buying isbelieving.25. Unusual surplus and new equipment/parts are priced "way down" ina 32 -page flyer from Edlie Electronics.Get one.75. Transistors Unlimited has abrand new catalog listing hundredsof parts at exceptionally low prices.Don't miss these bargains!HI -FI /AUDIO13. Here's a beautifully presentedbrochure from Altec Lansing Corp.Studio -type mikes, two-way speakercomponents and other hi -fi products.15. A name well -known in audiocircles is Acoustic Research. Here'sits booklet on the famous AR speakersand the new AR turntable.16. Garrard has prepared a 32 -pagebooklet on its full line of automaticturntables including the Lab 80, thefirst automatic transcription turntable.Accessories are detailed too.17. Two brand new full -color bookletsare being offered by Electro-Voice, Inc. that every audiophileshould read. They are: "Guide toOutdoor High Fidelity" and "Guideto Compact Loudspeaker Systems."19. A valuable 8 -page brochure fromEmpire Scientific Corp. describes tech -nical features of their record playbackequipment. Also included are sectionson basic facts and stereo recordlibrary.20. Tape recorder heads wear out.After all, the head of a tape deck islike the stylus of a phonograph, andRobins Industries has a booklet showingexact replacements. Lots of goodinfo on how the things are built, too.22. A wide variety of loudspeakersand enclosures from Utah Electronicslists sizes shapes and prices. Alltypes are covered in this heavily illustratedbrochure.24. Here's a complete catalog ofhigh- styled speaker enclosures andloudspeaker components. Universityis one of the pioneers in the field thatkeeps things up to date.26. When a manufacturer of high -quality high fidelity equipment producesa line of kits, you can just betthat they're going to be of the samehigh quality! H. H. Scott, Inc.. hasa catalog showing you the full -color,behind -the -panel story.27. An assortment of high fidelitycomponents and cabinets are describedin the Sherwood brochure. The cabinetscan almost be designed to yourrequirements, as they use modules.28. Very pretty, very efficient, that'sthe word for the new Betacom intercom.It's ideal for stores, offices, orjust for use in the home, where itdoubles as a baby -sitter.30. Tone -arms, cartridges, hi -fi, andstereo preamps and replacement tapeheads and conversions are listed ina complete Shure Bros. catalog.TAPE RECORDERS AND TAPE31. "All the Facts" about ConcordElectronics Corporation tape recordersare yours for the asking in a freebooklet. Portable battery operatedto four -track, fully transistorizedstereos cover every recording need.32. "The Care and Feeding of TapeRecorders" is the title of a bookletthat Sarkes -Tarzian will send you.It's 16 -pages jam -packed with info forthe home recording enthusiast. Includesa valuable table of recordingtimes for various tapes.33. Become the first to learn aboutNorelco's complete Carry -Corder 150portable tape recorder outfit. Four -color booklet describes this new cartridge-tape unit.34. The 1964 line of Sony tape recorders,microphones and accessoriesis illustrated in a new 16 -pagecolorfullbooklet just released by Super -scope, Inc., exclusive U.S. distributor.35. If you are a serious tape audiophile,you will be interested in thenew Viking of Minneapolis line -theycarry both reel and cartridge recordersyou should know about.HI -FI ACCESSORIES76. A new voice- activated tape recorderswitch is now available fromKinentatix. Send for information onthis and other exciting products.39. A 12 -page catalog describing theaudio accessories that make hi -fi livinga bit easier is yours from Switch -craft, Inc. The cables, mike mixers,and junctions are essentials!KITS41. Here's a firm that makes everythingfrom <strong>TV</strong> kits to a complete lineof test equipment. Conar would liketo send you their latest catalog -justask for it.42. Here's a <strong>10</strong>0 -page catalog of awide assortment of kits. They'rehigh -styled, highly- versatile, andHeath Co. will happily add your nameto the mailing list.128RADIO -<strong>TV</strong> EXPERIMENTER


Human Thought in OrbitContinued from page hitheir tests proved a human "sender" couldtransmit pictures of objects, the page of abook, diagrams of pictures, geometrical figures,even letters. Subjects in a state of hypnosis,Vasiliev claimed, could pick up visualimages projected by the hypnologist.The famed Dr. K. D. Kotkov of KharkovUniversity reported experiments he hadrecorded, worked out with an 18- year -oldgirl. With the Doctor in one room, the girlin the laboratory, he had put her to sleepwhile she stood peering at a test tube. Whenthe Doctor awakened her, she continued tolook at the tube, picked up her conversationas though nothing had happened. Anothertime, the Doctor hypnotized her into a sleepingstate when she was waltzing to the tuneof a piano.Meet Me At The Lab. The Kharkov Doctoreven claimed he had reached the girl'smind when he was at his home, and she athers. He would mentally suggest she meethim at the University laboratory and whenhe reached the lab she would be there, or onher way. When he asked why she had comeshe said, "I don't know. I just did. I wantedto."How It's Done. The Doctor then describedhow he put the young girl to sleep:"I used to sit in a comfortable chair in completesilence. I closed my eyes, then wouldmentally murmur to my subject the suggestion,'sleep, sleep.' " I pictured her to myselfas being fast asleep with closed eyes. Butmost important factor. 1 strongly wished thegirl would fall asleep. Finally, when this wishturned into a certain feeling," he would stopthe experiment, for he knew "it had beencompleted."Though the reported tests had been documentedby witnesses in the Soviet laboratories,now the scientists announced an experimentheld before hundreds of people inthe lecture hall at Leningrad University. Thereceiver, M, sat at a table on the stage, halffacing a Professor A. V. Gerver. Behind Mwas a blackboard, and behind the boardstood the sender, Professor K. I. Platonov,visible too, to the audience."I Must Have Slept." Before M mountedthe stage, Platonov had told the audience theexperiment would begin when he coveredhis face with his hands. As there was no wayOCTOBER -NOVEMBER, <strong>1965</strong>the Professor could contact M except mentally,the audience thrilled when it watchedPlatonov, first cover his face to visualize Mfalling asleep, then seconds later saw M fallasleep on the stage. When asked what happened,M said: "I don't know. I think I musthave slept." "Why did you fall asleep ?" "Ijust did. I felt like going to sleep."These early tests led to more complicatedones, "sending" the name of a person, suggestingautomatic writing, mental- suggestiontests with the receiver sitting in a Faradaychamber to prove performance throughmetals: finally sending hypnotic suggestionover distances.Long Distance Mental Operators. Probablymost spectacular, one touted by Pravda,was an experiment held between Sevastopoland Leningrad, a distance of some 1200miles. The first day tests were to be held,nothing happened. The sender was ill. Buttwo days later, on July 15, the receiver,Ivanova, went to the laboratory in Leningradat the appointed time, <strong>10</strong> o'clock, and by<strong>10</strong>:01, was fast asleep. Half an hour later,the sender, alone on a Sevastopol sea front1200 miles from Ivanova, awakened thewoman at exactly <strong>10</strong>:40 P.M. Watches andclocks at both points had been checked withMoscow time.Soviet scientists claimed this test proveddistances, the curvature of the earth, hillsand water surfaces, did not affect brainphenomena. "Brain radio," they insisted,from this experiment, did not differ muchfrom radio telegraphy.Theories. But when they tried to explainthe unusual phenomena, theories varied. Allclaimed mental suggestion, thought transference,had been proved out sc entifically,but just what made it tick was something elseagain. Most compared the process to radio."The nervous system is a collection ofradio installations or sets of microscopicsize," said famed physiologist, A. V. Leon -tovich, "capable of generating and receivingultra -short radio waves." Academician P. P.Lazarev suggested, "We must consider thepossibility of catching in space a thought inthe shape of an electromagnetic wave," andclaimed brain wave lengths were 6,000 to30,000 km. Famed V. M. Bechterev put it:"Mental suggestion is effected by short high -frequency electromagnetic waves."New Form of Energy. An attempt to pindown field theory was worked out with aquadrant electrometer connected to a receiv-(Continued on page 132)131


Human Thought in OrbitContinued from page 131ing plate. When a human being neared theplate, the electrometer reading changed.Additional tests proved muscle constrictionsor tensions caused generation of an electriclow frequency field. Hans Berger believedelectrical charges from the brain changed to"psychic waves" which diffused throughspace and changed again to electric vibrationswhen they reached the receiver.Many thought they could be dealing witha new form of energy, a brain factor "sofar unknown to us, yet belonging to thehighest stage of development of matter." To"discover such energy or factor would betantamount to discovery of nuclear energy,"for "everything that exists in the universe isnot discovered yet."All Agreed. But while theoriei clashed,all agreed solution of thought transfer mustultimately come through fundamental cyberneticalsources and if they could construct athinking machine that could generate artificialbrain waves "designed to influencemental activity of people" the machine wouldshow them how the process worked out inhumans!The West. All of which might have beenshrugged off and dubbed thought- out- of -controlby the Western scientific community butfor the amount of money and calibre of menRussia was pouring into the program. Topflightrocket pioneer K. E. Ciolkovski toldthe Soviet press: "The phenomenon of telepathycan no longer be questioned. In thisera of space flights, telepathic abilities arenecessary."If Only Half. The famed Dr. J. B. Rhineof Duke University, Durham, N. C., warned"Successful demonstrations were given (inRussia), including induction of hypnoticstates. The experiments were successful evenwhen the subjects were inside chambers withan entrance trap door which, when closed,was submerged in a gully filled with mercury."While our Director of Biotechnology andHuman Research in the NASA Office ofAdvanced Research, Dr. Eugene B. Konecci,recognized that if the results of these experimentsare "half as good as claimed," theRussians "may put a human thought in orbit"before we do. Konecci says Soviet Russiagives this program "top priority under itsSoviet manned space program," may achieveman -to-man communication with men on themoon before we do, and even now strives tobuild an "electronic hypnotizer" to sendthought suggestion over distances.From Space. But commenting on Americanefforts, the top Doctor can only say:"Specific U.S. experiments (not NASA) inenergy and information transfer phenomena... are being carried out ..." and mentionsbut one United States scientist active in thisfield -the famed neurologist, Dr. AndrijaPuharich. Puharich, he says, believes wecould attempt "energy transfer" tests as partof our space program from a manned orbitallaboratory where a human receiver wouldbe in the platform, the "sender" on earthsubjected to high gravitational force conditions.This way he thinks we would find the mosteffective "interaction of energy transfers" forthe brilliant young doctor believes gravitationalforces affect thought transfer.Moon Affects Thought. For he says telepathictests performed during a full lunarmonth showed marked improvement duringthe full moon phase when gravitationalforces lowered.That telepathy exists has been repeatedlyshown in the laboratory, but actually rationalexplanation has been handicapped bythe very nature of the phenomenon, theproblem of establishing conditions of repeatabilityin testing. He believes telepathy maywell be based on transmission of electromagneticwaves between humans, that it followsdefinite laws of electronics and physics.In his tests, taped on recorders, he cites experimentsbetween two people, three people"telepathic networks" of four or more,separated sometimes by hundreds of miles.The Rope. In his book, "Beyond Telepathy,"he tells of an experiment staged byDr. Rudolph von Urban and a Dr. AlexanderPilcz who long studied the Indian RopeTrick. The two scientists gathered severalhundred people together with a Fakir, andhis helper, to put on a show.All the people watching the performance,including the scientists, saw the Fakir throwa coil of rope into the air, saw a small boyclimb up the rope and disappear. A fewseconds later, dismembered parts of the boytumbled to the ground. The Fakir gatheredthem into his basket, scrambled up the ropeand then both boy and Fakir came downsmiling.(Concluded on page 135)132RADIO -<strong>TV</strong> EXPERIMENTER


Matrix CircuitsContinued from paae 60When diode DI isn't conducting we havea circuit equivalent to the one shown inFig. 5.It can be seen that when the input switchis open the diode is out of the circuit. If aV<strong>TV</strong>M is connected across the output itmeasures the battery's negative 1.5 volts;through R I . Resistor R I drops almost novoltage because its resistance is small comparedwith the V<strong>TV</strong>M's.Again, diodes DI, D2, D5 and D13 canbe eliminated (shorted out) and their inputsconnected directly to the outputs becauseneither the diodes' isolation or resistance isneeded in this circuit.Matrix Demonstrator. While you canalways throw a matrix together on a breadboardjust to get the hang of things. it takesjust a little extra finesse and a sloping panelcabinet to turn out a classy matrix demonstratorsuitable for class discussions, sciencefairs, or just plain fun for the family's juniormembers. The unit assembled in this articleis made from the schematic diagram inFig. 1.The heart of the unit is the matrix whichis built on a 27h6 x 3% inch section of perforatedboard (Lafayette 19G3601). This isa stock size so you won't have any cuttingproblems. The matrix grid is formed bystretching #22 solid hook -up wire betweenflea clips (Lafayette I9G3301 ) at each endof the board. Place a row of nine clips attwo opposite sides and connect matchingclips together. Stretch the wire as tight aspossible laying it flat against the board; wrapthe wire around the base of the flea clip.Then mount four clips at the two remainingsides spacing them two holes apart; the extraspace is needed to avoid jamming the diodestogether. Stretch the connecting wires acrossthe top of the clips so you form a grid withnine leads on the bottom and four leads onthe top. Make certain the top leads do notsag into the bottom leads.Any cheap diode of the I N34 type can heused. The specified type are subminiatureand extra -easy to connect. Connect them asshown in the photographs -on end. Thecathode is indicated by a color band. If thediode has several bands only one will be onthe end -ignore the other bands. Cut theanode lead (the one without a color band)OCTOBER- NOVEMBER, <strong>1965</strong>to 1,4 inch and form a small hook. Snag thehook around one of the nine bottom leadsand solder. Do not use a soldering gun, oran iron in excess of 75 watts -the heat willdestroy the diodes (there isn't room to usea heat sink). Make the connection fast andwith a minimum amount of solder.Fold down the remaining cathode lead andconnect it to the appropriate top lead. Again,solder quickly. If possible, use a differentcolor wire for each input and output connectionto avoid a wiring error during finalassembly.The Panel Sub -Assembly. The panelmust be completed and pre -wired on thecabinet (sloping panel utility box, PremierASPC 1 202) before the matrix is installed.SI through S9 are normally -open miniaturepush button switches; use the least expensivetype. For a professional appearance, suitablefor display, use standard red panel pilot lampassemblies. For reduced costs, the lamps canbe mounted in a 1/2 -inch rubber grommetwith the connecting leads soldered directlyto the lamps. Wire both the switch and lampcommon leads and the battery terminals beforeinstalling the matrix.Insulating the Matrix. The matrix ismounted on the cabinet's bottom plate.Since the flea clips extend through the boardthe assembly must be raised to prevent theclips from shorting to the cabinet. Place a1/4-inch spacer or fiber washers under thehoard at the four mounting corners.Number the appropriate panel lamps -1,2, 4, and 8. Number the switches in theappropriate order I through 9. Connect the9 -volt clip -on battery ( Burgess M6), depressany switch and the total of the illuminatedlamps should equal the switch number. Forexample, if 7 is depressed the 4, 2, and 1lamps (representing 4 + 2 + I 7) shouldlight. Check all switches in a similar manner.If a switch produces an incorrect totaleither a diode is installed with reversedpolarity, a diode is defective, or there is awiring error.You are now armed with some solidtheory and practical knowledge on the subjectof "the matrix." Don't hesitate to putit to full use the next time one of your chumspipes up with big words like EDP -electronicdata processing or computer language. Justpipe in with, "Well let me tell you aboutmatrix circuits. They work this way. .. .You will be solidifying your acquired knowledgeand passing some of it on to yourbuddy at the same time.133


134Discoverer of <strong>Radio</strong>Continued from page 85He points out that almost everything that isknown about the dentist's early electricalwork comes from the inventor's own records.It is not even known who the "eminentscientists" were who Loomis said witnessedthe Bear's Den Mountain test.After further experimentation, Loomisasked Congress for $50,000 to develop hissystem. The Congressional Globe of Jan.13, 1869, reports that Senator Sumner presentedthe petition with this comment: "Icontent myself with remarking that it iscertainly a great case of moo:: thine or itmarks a great epoch in the progress of theinvention." Sen. Wilson: "I do not know ifthere is anything in the invention; probablythere is not; but it is not worth our whileto meet any propositions of this sort with asneer.Patent Granted. Loomis' request forfunds died in committee, but the patent heasked for was granted on July 30, 1872, andthe following year Congress incorporated theLoomis Aerial Telegraph Co. The bill wassigned by President Grant. Loomis' patentis interesting. He presented and was allowedthe broadest possible claim he could make.Anything that would cause electrical signalsto be radiated into space, or control them,or detect them, was within the scope of hisaward.Loomis was now in a position to becomea rich, famous man. He became neither.Instead, his life from 1878 on went abruptlydownhill. His ideas and claims were ridiculed,although in fact he was the first toemploy a vertical antenna and RF ground,the first to employ spark signaling, the firstto employ kites and balloons for support, thefirst to specify an "indicator" (now called adetector) in his receiving system, the first torecognize the value of electrical agreementbetween sending and receiving systems (resonance)and the first to patent a wireless.No Money -No Fame. Financial panicshad been occurring, and these served to crippleLoomis' attempts to raise capital. Alltold, he sold only <strong>10</strong>0 shares of his stock at$ <strong>10</strong>0 a share and was forced to spend hisown money, earned from his dwindling practiceand from his lectures, to keep on withhis experimental work. Loomis took a jobas a geologist in Virginia, sought a consularappointment to New Zealand, practiced dentistryin Chicago for a brief period and atlast disheartened, died on Oct. 13, 1886, atthe age of 60.19 Century DaVinci. That Loomis was agreat visionary is confirmed by his notebooks,which show that he conceived anddescribed in detail the operation of the recentlyperfected fuel cell in which hydrogenand oxygen are combined to produce electricitywithout moving parts, excessive heator explosion; he predicted communicationbetween planets and space vehicles; and heenvisioned mankind some day tapping thecelestial "battery" of electrons and otherenergy particles found in space in order toobtain an unlimited source of power.These were the far reaches of an extraordinarymind says Commander Appleby. "Hewas a man with big ideas who was born toosoon."Loomis, a dreamer of lofty dreams, aman of tremendous persistency and thepossessor of a strong scientific bent and anacute analytical ability, had a premonitorytalk with his brother before his death.The inventor wanted mankind to enjoythe fruits of his discoverings, maintainingthat it would be the means of establishingbrotherhood among the nations and races. InLoomis' own words, "In the distant future,when the possibilities of this discovery, as Isee them, are more fully developed, publicattention will be directed to the originator,and the Congressional records will furnishindisputable evidence that the credit belongsto me."It would be gratifying, I confess," theneglected genius continued, "to live to seethe world acknowledge such a crank as Godemploys to move the world. By confiningmyself to the ordinary routine of affairs, Icould have made, no doubt, a comfortableliving, even more than a competency -thenpassed away and be forgotten, but an impulsehas driven me I could not resist."RADIO -<strong>TV</strong> EXPERIMENTER


Human Thought in OrbitContinued from page 132DX from Upper LimboC,'nli t_, '+uOf the several hundred people whowatched, all saw the same scene. Yet whenmotion pictures were developed, picturesshowed the Fakir walk into the center of thegroup, throw the rope into the air. The ropefell to the ground, and the Fakir and boystood motionless by it. The rope did not stayin the air: the boy did not go up the rope.But everyone present had experienced thesame hallucination, there was not one dissentin the crowd. One sender had hypnotized severalhundred people. Other Fakirs have beenknown to hypnotize thousands.Awesome Weapon. Applied over distances,as the Soviet scientists claim theyhave hypnotized over a distance of 1200miles, this "trick" has awesome, frighteningconnotations. Dr. Rhine points out: "If justa few persons around the world can developand regulate their super -sensory powers toa reliable degree" it would be impossible forany nation to keep a new weapon secret. Letalone the menacing implication of long -distancehypnosis practiced on hundreds, orthousands of people!No Research? Yet when we contactedthe United States space agency to inquirewhat this country was doing in this area, theanswer was cryptic: "There is no research beingconducted by NASA or our contractorsin this field." In a field where Russia reportedlyconcentrates money and top -flightmanpower, in an area that can mean survivalof the free world or submission to tyranny.the U.S. space agency emphasizes "the NationalAeronautics and Space Administrationis not engaged in any ESP research." Perhapsour space agency is adopting a "notalk"policy in this vital area. Perhaps,despite the fact some of our greatest minds,Marconi, Burbank, Edison, believed in mentalphenomenon, it is influenced by recentassociation of telepathy with the esoteric. Butwhatever the reason, whether the U.S.Agency is not active in this field, or will notassure the people it is active, we must notplay ostrich too long.For in time of serious international emergency,we might find the President of theUnited States, his Secretaries of State andDefense, the SAC Command, our missile,plane and submarine crews all fast asleep,happily dozing in the Land of Nod!OCTOBER -NOVEMBER, <strong>1965</strong>busses and taxis) plus industrial communicationsstations. The latter includes a multitudeof things but most interesting and mostwidely heard are the off -shore oil rigs in theGulf of Mexico which constitute anotherDX puzzler. For scoring purposes, do theycount as international waters or the UnitedStates? In any event, here is one way to putrealism into your listening, realism rangingfrom the crisp dispatcher to the oil rig"roughneck."For the time being, most DX from theseutility stations will be via the Sporadic Elayer. A minor technical problem is providedby their modulation which is FM.But it's the narrow band variety so if yourreceiver is not intended for frequencymodulation, simply tune to one side of thecarrier frequency. With a little practice,you'll have no trouble identifying the stationand understanding its transmissions.All these stations announce their call lettersoften and those operating from a fixedposition (and licenses to communicate onlywith certain other stations) will have callsconsisting of three letters and three digits.To find the general location of any fixedstation, consult the "Upper Limbo Call LetterChart." If you want to report for thepurpose of QSL'ing, you can purchase utilitylists of industrial and communications stationspublished by Communications EngineeringBook Co., Monterrey, Mass. Writethem for prices of the latest editions... Built my own antenna booster .135


136South Pole DipoleContinued from page 49It proved to be the worst storm of the tripuntil just before time came to break campand return home. At that critical moment,another fierce blizzard struck.About the Men. Much of the time the menworked either in bright sunshine or a calmwhiteout, a condition under which there is nohorizon, no perspective and no shadows.A whiteout is caused by a combination ofthe unbroken white landscape and a high -altitude fog, which completely diffuses sunlightreaching the icecap."Visibility is excellent in a whiteout," saidJohnson. "Often you can see for miles. Thetrouble is, if you notice something you can'trecognize, you simply cannot judge if it is ahuge object several miles away, or a smallobject a few hundred yards away."Snow, cold and constant daylight were notPush -Pull Crystal ReceiverContinued from page 97out, and wood finish for a more professionalappearance. Here, the parts were placed forreasonably short leads, but some were purposelyleft long so the parts could be removedand used for other projects. Placementof parts is not critical so you can useyour own ideas in locating and mounting theparts. Doing so will develop originality andexercise your ingenuity for more advancedhome brew projects.The receiver wiring is simple, but be sureto observe correct polarity on the crystal diodesand electrolytic capacitors. The othermajor precaution is keeping the amplifieroutput leads away from the input leads. Themounting board photographs show how theparts are mounted on a <strong>10</strong> in. x 41 in. panelof V/s in. thick composition board. The two -section variable capacitor (C1 -C2) is mountedwith two or three short machine screws,and the coil form with two 6 -32 one -inchmachine screws covered with stand -offsleeves about 3/4 in. long. If you use a <strong>11</strong>/2-inch diameter wood dowel as a coil form,mount it with wood screws. Be sure that youuse brass hardware only near RF coils LI,L2 and L3. Ferrous metals will tap preciousRF signals from the tuned circuit.the only problems. A husky dog named OldByrd Dog Sastrugus became the group's unofficialmascot. One afternoon Sastrugus ate$400 worth of Guy's travelers checks."Just try to explain something like that tothe American Express Company," said Guy.Two of the men -Guy and Johnson -flewback early in March, leaving Bob Tighe toload the bulkiest equipment aboard theSeattle -based Navy icebreaker STATENISLAND. When the two men reachedMcMurdo Sound airstrip for their returnflight, they found the place in an uproar.Several cracks, one running right throughthe camp, had been discovered in the 40-foot -thick fast -ice runway, heretofore consideredunbreakable. Strong February windshad caused the problem.Guy and Johnson flew out on the next tothe last aircraft to leave the damaged airstrip.A few hours after their departure therunway broke apart and began floatingaway.INWinding the Coils. The three coils, Ll,L2, and L3, are wound on a <strong>11</strong>/2-inch diameterbakelite or plastic tube coil form about3 inches long. If you use a wood dowel orcardboard tubing as a coil form, give it acoat of shellac to moisture -proof it; let itdry thoroughly before winding the coils. Thetwo secondary coils, L1 and L3, are each95 close- spaced turns of No. 32 enameledcopper wire. The primary coil, L2, is 30close -spaced turns of No. 32 enameled copperwire, wound between LI and L3 leavinga space of 1/2 inch on either side. All threecoils are wound in the same direction. Rememberthat neatness counts.The two 2N217 PNP transistors aremounted by their own leads. Use long -nosepliers to function as a heat sink when solderingthe transistors and diodes in the circuit.To prevent shorts, use spaghetti tubing overbare leads where necessary.Finishing Touches. The <strong>10</strong> "x 41 "x 234"cabinet was made of 3 /e" hardwood, and puttogether with small nails and wood glue.Moisture -proof the inside of the cabinet withshellac, and finish the outside according toyour own taste and requirements. Mount thefront panel with six flat -head, 1/2-inch woodscrews. The front panel dial knobs, bindingposts, and phone jacks can be labeled withtypewritten strips or decals. Now, all thatremains is to slip on your headphones andtune in those stations!RADIO -<strong>TV</strong> EXPERIMENTER


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.lincluded.GET READY FOR THE SPACE and SCIENCE ERA! SEE SATELLITES, MOON ROCKETS CLOSE -UPAMAZING SCIENCE BUYSfor FUN, STUDY or PROFITfee the Stars, Moon. Planets Close Up!ár ASTRONOMICAL REFLECTING TELESCOPEIPhotographers! Adapt your cameracellentto this Scope for ex-Telephoto shots and fascinating photos of moon!80 TO 180 POWER! FamousMt. Palomar Type! An U I BuylSee the Rings of Saturn, the fascinating planetMan, huge craters on the Moon, phases of Venus.Equatorial Mount with lock on both axes.inisedAlumandovercoated 3" diameter high -speedf /<strong>10</strong> mirror. Telescope equipped with a IOXeyepiece and a mounted narlow l.en.s. OpticalFinder Telescope ltardwo,, portabletripod. FREE withScope: Valuable STARCHART plus 272.ppawge "HANUROOK OF'ENS" plusHEAV-"HOW TO USE SOUR TELESCOPE ROOK.Stock No. 88,050 -HP$29.95 Postpaid414" Reflecting Telescope -up to 229 PowerStock No. 85,<strong>10</strong>5 -HP$79.50 F.O.B.Superb 6" Reflector Telescope1p to 576 Power. Equatorial mount and Pedestal Base.Stock No. 88,088 -HP$199.50 F.O.B.BRILLIANT ELECTRONIC FLASH TUBESFOR PHOTOGRAPHERS & MECHANICSTime your c ignition. use ,light,for pho tocontrolCash. ,.h. signaldevice or stubes,strobe light. Thesefilledflash {twith Xenon gas,withhave glass envelopessealed electrode at each end. hlfd. by G.aJsInstructions E.Incl.NMILow voltage tube for low nersY petitive flash p-plications. Operates on an anode between 120. and 500 -V., 2.<strong>11</strong>e" 1g. x14" diem. For Ignition timing, uses 130 -V. with :<strong>10</strong> <strong>10</strong>(<strong>11</strong>. dischargecapacitor, 4 -sec. ay. flash rate, 2u -hr. approx. life.STOCK NO. 40,728 -HP$5.20 Ppd.Portable photo equipment applicationsings protecting In covereduser reflector. tirfrom contact with housvolta8ehigh voltage Low operating(400- to ,0-V.) 'ell lilted for with elcetroly0, typeeappaae tore, 2wa high x Ait" diem., mounted un 1 -% diem. e1 ils" U<strong>11</strong>eh wafer base designed W be crimped Into e reflector. Threepins serve sa moldering terminals. Typical photo flash application unes450.V. on the anode with <strong>10</strong>50 mid. capacitance, 4e00 lumen seeoutput, peak lumen output 4 x <strong>10</strong>6, 21min. flash rate.STOCK NO. 40,726 -HP$9.00 Ppd.® PA ASTRONOMICALt 'MAKE YOUR OWN POWERFULTELESCOPEIGrind Your Own or Mirrorbits contain mirror blank. tool.diagonal bui mlrstr and eyepiecevat. l'oca build Inat romance reds,/1 ` t In-.a/' value from $75.00 to hundreds ofStock No.70,003 -HP70,004 -HP70.005 -HP70,006 -HP70,007-HPDiem. Mirror Thickness Price41/4" 3.4" S 7.508" PPd.1" <strong>11</strong>.95 ppd.8" 1%. 19.50 ',pd.<strong>10</strong>" IN" 30.751 f.o.b.121 /2" 21/4" 69.96 1 BarringtonRAND NEW. 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Delivers almost<strong>10</strong>0''9 of output t below freezing tem,eraluren where output is rducted 50/- in lead -acid cells. No corroolve fumes given off under anystage of recharge. Can't Inc damaged by accidental charging In reverse ,hut not recommended). Cell mean. 6" rc 2" x l.2" thick. 6r os.Stud type terminals on top l lie" apart, marked for polarity; 0-32thread, nuts and lock washer..ONE 1.2 VOLT NICKECADMIUM CELLStock No. 40,798 -NP$3.95 PostpaidONE sVOLT NICKEL- CADMIUMcello in stain lens steel.slrap-type casing. Convenient power source for F lun m d's war surplusn,perscv,pe (No. 85.157). 6" x 2 "x 4l', Wt. approx. 2 tbs. aStock No. 70.776 -<strong>11</strong>P$15.00 PostpaidONE 7.2VOLT NICKEL- CADMIUM COMPLETE WITHCHARGER KIT. Assemble your own portable battery Mower supply withbuilt -in charger. Excellent for portable ovie light. Slx-eell battery Instainless steel, strap -type casing: 12 -vol! t transformer: charger circuithoard consisting of rectifier and automatic regulating circuit transistorized)which protects against overcharging of battery. Completewith wire, switch, line curd, hardware and Instructions. 8" x 8" x 2 ".Wt. approx. 2 tbs.Stock No. 70.777 -HP525.00 PostpaidIMAIL COUPON for FREE CATALOG "HP"EDMUND SCIENTIFIC CO.. Barrington. N. JCompletely New <strong>1965</strong> Edition. 148 pagesNearly 4000 Unusual Bargains.Please rush Free Giant Catalog.Iil,NameAddressCltyZone.... StateSOLVE PROBLEMS! TELL FORTUNES! PLAY GAMES'NEW WORKING MODEL DIGITAL COMPUTERACTUAL MINIATURE VERSIONOF GIANT ELECTRONIC BRAINSFascinating new se -through model computerfdually solve. problems, teaches computerdamentals. Adds, subtracts, multiplies,shifts, complements, carries, memorizes, counts,nt.compares, sequences. Attractively colore!, rió' p4l<strong>11</strong> sauc ppnnaacc,a aaeep meemb2yb " ae peraton, dl3nms ,32.p.igecovering.,.teml, 'nstruetinneompote, languagepr. ti r ming, p roblems and 15 experiments.Stock No. 70.683 -HP$5.98 PostpaidASTRONOMICAL HOOTS.. U.S.A.Keep Pace With the Space AgeRe ready for the m i shots. See the incredible wonders ofverse.the Uni-Choose from s the world's largest selection of telescope. andrelated equipment. Complete range of reflectors, refractor.. panoramic,terrestrial. spotting, etc., ranging from advanced precision instrumentsto inexpensive, build- your -own kits. Every accessory imaglnable. Drives. sinm,ts. tinder.. mieroes. eyepieces, lenses. outer+,equipment for astrophotography. charts, maps, motels. !ides. studyadds and chi.-room hclt.s write for F'rer !,'tiro r:,t:i1g ÑP''FISH' WITH A WAR SURPLUS MAGNETGo Treasure Hunting on the BottomGreat Idea! Fascinating fun and sometimes treeoralong the bottom -your 't reasure" haul emendously profitable! Tie a line to our 5.<strong>11</strong>1.dropMagnet-It overboard in ha river. lake ocean. Troll itbe outboardtors. ehors, fishing tackle, all kinds of taÌ aluables. It-. Manet g is war a plus- Alate(, V Type- Gov't.Cost, $50. Lifts over ISO lbs. land -much greaterweights under water. Order now and try this new sport.Stock No, 70.571 -HP 5 Ib, Magnet$12.50 PostpaidStock No. 70.570 -HP 3i, lb. Lifts 40 lbs $8.75 PostpaidStock No. 70,572 -HP 7<strong>11</strong> Ib, Lifts 175 lbs318.75 Ppd.Stock No. 85,152 -HP 151b. size. lifts 350 lbs.333.60 FOBEXPLORE THE®®FASCINATING WORLD OF MAGNETISMNEW 15 MAGNET SAMPLER KIT<strong>11</strong> Shapes! Many CompositionalEver ripen tomatoes by magnetism-paint picturen using magnet asand iron filingsas paint? Surprising new idea. and uses for the\ ` G`wrbewildering forces of magnetism are continuallydiscovered. 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Incl.:Inico w handle, U- shaped alnico, three -2 sided ceramic, flexiblestrip, alnico har, ceramic, alnico disc w /renter hole, 2 1g. lnico cyl,alnico eyl. flex. sheet, 2 baby alnico bar, 3 channel -type polepieces for am ceramic magnets, bar magnet keeper, 2 disc magnetkeepers, comp!. info. and inst.Stock No. 70,780 -HP$5.00 PostpaidRUGGED, LOWPRICEDEXPERIMENTAL ELECTRO- MAGNETHobbyists. lost rer Lors rad ottlus, r,:,i I:d, rwill find this well -bulls Electra -Magnet Inca).uahle. Demonstrate principles of electro-magvellum. Actually lifts <strong>10</strong>0 lbs. when poweredby a single 1LV flashlight battery. Easilydeactivated. Includes Instruction. for 8 experi.Meals- tiftiOg power, magnetic flux nd nagnetomnllse force. air gap. are ofcontact s.retentivity and field configuration. Unit includesmagnet and yoke mbly, battery holder, lend.. , Isr, Wool curl.. IiSteel cur and yoke s precision ground for o, :,s. t1: ,. .\t «.5:tdia. x 41rá" Ill. Nt. 2 Ilia. -Stock No. 60,435 -NP$<strong>10</strong>.00 PostpaidInstantly Copy and Measure ContoursNEW MAGNETIC CONTOUR GAGE1 Contour gage with magnetic rods -to- holder,age. Instantlylinkconformsto Irregular shapes,stantly Inlocks copied information and measuresdirectly.it<strong>11</strong>)0 rod", arranged side byindependentlyside to slidewithin a permanent magnet holder.Rids linked to holder by magnetic attraction,provides optimum sliding and gripping action.Can be lockedflipping lever. Patented precision positively. without fir ru-st repairing (ring,and duplicating trod and lineal; narking modela, spatternsmples,and Ids; quality control: prototype transfer; fluor and wallcovering Installation. Use for checking tire tread wear:cation: makingplastic fabridire-cut inserts for paper boxes, etc. Forms both'ide in,m tch , and outside ,fit profiles with singleingmotion. Dined readscalesfor taking both horizontal and vertical measurements of¡n rtions of million. Can he read faim either end tu accuracy of I ' 32 ".Birds can lie Instantly realigned. Measures contours g. and2a." high. Stainless and ehr,,me-plated steel. tempered 5" Is havetapered ends. Overall nl " lg. x 4" high x 3/4" deep. Insaddle stitched. sue ,le- linrxlacase.r instructions Inc. Wgt. approx. 14.oa.Stock No. 60,507 -HP$13.96 Ppd.01<strong>10</strong>14 ST ltora Neoar. .lisa [arra 0. MOW/ 001 lnDatnGa 4u1aarraEDMUND SCIENTIFIC COO,BARRINGTON, N. J.138RADIO-<strong>TV</strong> EXPE8i.13ENIER


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GET FAST STARTWITH NEWACHIEVEMENT KITDelivered to your door -everything you need tomake a significant startin the Electronics field ofyour choice. An outstanding,logical way to introduceyou to home -studytraining. It includes yourfirst set of lesson texts andall the "classroom tools"you need. No other schoolhas anything like the newNRI Achievement Kit.16-ELECTRONICSCOMES ALIVE WITHNRI TRAINING KITSNothing is as effective aslearning by doing ... andNRI pioneered the "homelab" technique of training.NRI invites comparisonwith training equipmentoffered by any otherschool. Begin NOW thisexciting program of practicallearning. Make theskills of the finest ElectronicTechnicians yourown. Mail card below."BITE SIZE" TEXTSPROGRAM YOURTRAININGCertainly, lesson texts arenecessary. NRI's programmedtexts are assimple, direct and well illustratedas 50 years ofteaching experience canmake them. They arecarefully programmedwith NRI training kits tomake the things you readabout come alive. You experienceall the excite.ment of original discovery.HOBBY? CAREER?MAIL CARD NOWTO NRIwhatever your need . . .whatever your education. there's an NRI train.ing plan to fit your re.quirements. Choose fromthree major courses orselect one of seven specialcourses in particularElectronics subjects.check the postage -freecard below, fill in andmail. National <strong>Radio</strong> Institute,Washington, D.C.DISCOVER THE EASE AND EXCITEMENT OFLEARNING ELECTRONICS THE NRI WAY4 SEE OTHER SIDENational <strong>Radio</strong> Institute, Electronics Div.Washington, D.C. 20016 5-<strong>10</strong>5Please send me your catalog. I have checked the field(s) of most interest tome. (No salesman will call.)<strong>TV</strong> -<strong>Radio</strong> ServicingIndustrial ElectronicsComplete CommunicationsFCC LicenseMath for ElectronicsBasic ElectronicsElectronics for AutomationAviation CommunicationsMarine CommunicationsMobile CommunicationsPICK THETRAININGPLAN OFYOUR CHOICEAND MAILCARD FORFREE CATALOGNameAgeAddress_City State Zip CodeAccredited Member National Home Study CouncilOUR 50TH YEAR OFLEADERSHIP INELECTRONICS TRAINING

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