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1'::1" ~~4 ""ATTENTION MOBILE HAMS IS METER MOB ILE TRANSCEIVER CW a USB N CG ISSB THE QRP RIG WITH THE BIG RIG SOUND ACTIVE NO ISE BLANKER- RF GAIN- CW SW ITCH SQUELCH- M IC GAIN -DIGITAL FRE QUEN CY DISPLAY- HI/LO POWER SW ITCH-13.8 VDC 5A POSITIVE OR NEGATIVE GROUND See your deal er for a demonstration. DEALER INQUIRY INVITED. NEW 438\0 450 MHz PLL mobile Memory-Scan III I.~ 1275 N. GROVE ST. ANAHEIM. CALI F. 92806 (714) 630·4541 STOP RF SPILLOVEI You may be losing up to half the available output from your vertical gain antenna because of RF spillover. The amazing AEA Isopole with unique decoupling design, virtually eliminates RF spillover and can help you multiply your power in all directions on the horizon relative to an ideal half-wave dipole, or end-fed non-decoupled "gain" antennas. CALL TODAY KENNEDY ASSOCIATES 2618 RIGSBY AVE. SAN ANTONIO, TX 78222 (512) 333-6110 AEABr ings you the Breakthrough! I ::It The antenna with a big difference... the five band trap vertical Hustler 5-BT V The 5-BTV is made heavier for better performance and Quality. H eavier traps assure accurate and permanent trap resonance . Sol id one-i nch fib erglass trap forms give optimum elec trical and mechanical stability . One setti ng provides total band coverage from 40 through 10 meters. SWR is 1.6 or better at the band edg es. The 5-BTV is top loaded at 80 met ers (tuneable to 7 5 meters). Thi s means grea ter bandwidth and lower ang le of radi ation . Easy to assemble and install, the 5-BTV features 1W' high streng th aluminum construction. And an extra-heavy bracket with low loss-high strength insulators. Feed with any length 50 ohm coax . For the big difference in pe rformance, it's the Hustl er 5-BTV ante nna. Clearly the choice o f those w ho know qu ality. ,/305 32 75 Nort h e. Ave. , Kissimmee , Florida 32 741 ] D I ~ DEALERS Amateur Radio Center 1117-19 West 36th 8t. Baltimore, MD 21211 301-889-5214 Coles Communication Center 3907 Fredricksburg Rd. San Antonio, TX 7820 1 512-734-4613 Hamtronics 4003 Brownsville Rd. Trevose , PA 19047 215-34 7· 1400 Power Communications Corp. 60 12 North 27th Ave. Phoenix, AZ. 85017 602-242-8990 RSE Ham Shack 1207 W. 14 Mile Rd. Clawson, MI 48017 313-435-5660 Tedco , Inc. 437 South Babcock St. Melbourne , FL 3290 1 305-727-2311 102 73 Magazine' October, 1980
YOU ARE LOOKING AT EVERYTHING THAT IS NOT ON SALE THIS MONTH AT HAM RADIO CENTER FOR BEST PRICE - FAST DELIVERY CALL TOLL-FREE • • • 8340·42 Olive Blvd. • P.O. Box 28271 • St . Louis, MO 63132 "" Reader Serwce-c-see page 2 74 73 Magazine . October, 1980 103
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Ii Gift to , enty Years of 73 o 174
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Rack Attack from DenTron Components
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Escape from Mt. St. Hel e ns! .....
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Small wonder. TRIO-KENWOOD COMMUNIC
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Afresh idea! Our new cro p of to ne
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All new, all nine hf bands and only
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1. SENSITIVITY: Superb amp lif ier
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Touch-Tone Decoders . SJ.' ·_ M·
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WHEN OUR CUSTOMERSTALK•.• WE LI
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STOP RF SPILLOVEI You may be losing
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( LEAKY LINES Dave Mann K2AGZ 3 Dan
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73's ICOM IC·720 DEAR OM: There ar
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MEMORY KEYER BREAK THROUGHI New l
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INTIMIDATED BY MORSECODE? THE NEWAE
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Solid-State H.F. Kilowatt Amplifier
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Escape from Mt. St. Helens! M arian
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dwarfed everything by its magnitu d
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Edward t. M ulvin WBQI FF 34()()54t
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Phot o E. The AB C " That's Incredi
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W erner M . Ma urer W1QMS Kefl y Dr
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MEMORY KEYER BREAKTHROUGHI The rema
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-WILSON SYSTEMS, INC.---.... the SY
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WILSON SYSTEMS TOWERS !i ~ ' ''0.0
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Joseph D. Novak K40VK 2420 Luckett
Page 52 and 53: Antenna azimuth for ATS·3 from Was
Page 54 and 55: ---SCR1000VHF-SCR4000UHF---- 7i?
Page 56 and 57: Joe wesrennaver W4FE:. C 155 Wood f
Page 58 and 59: f MEMORY KEYER BREAKTHROUGHl The re
Page 60 and 61: The Arcane Art of ATV the transvert
Page 62 and 63: Th e 2N2219 t ra nsistor specif ied
Page 64 and 65: Photo E. l eff WB8 RIY, about 5 mil
Page 66 and 67: Pho to G. Rack-mount installat io n
Page 68 and 69: Robert B. Grove WA 4 PYQ Grove Ente
Page 70 and 71: proveme nt over the origina l To uc
Page 72 and 73: channe l l ; ente r 139.1 MHz into
Page 74 and 75: detector. Be sure receiver is sw it
Page 76 and 77: Joseph H. Cowen WA 5TUM P.O. Box 76
Page 78 and 79: an advance piece and aft erthe-fac
Page 80 and 81: School and ret ired surgeon Dr. N i
Page 82 and 83: 73 Magazine Staff Field Strength fo
Page 84 and 85: Photo B. Front of th e con verted Y
Page 86 and 87: TE1: ANTENNA SYSTEMS l-BoO-654 -}2}
Page 88 and 89: Robe rt M . Brown W9HBF 561 1 M idd
Page 90 and 91: c o u ra g i n g a n d wo r th repo
Page 92 and 93: elay (I used a 3PDT type) . When th
Page 94 and 95: '" '" 117 VAC NEON DIAL LITE .l 117
Page 96 and 97: Fig. 9. This view sho ws how the ra
Page 98 and 99: ~ ''' ' '' '' '' -- sli de the cap
Page 100 and 101: "' 0." -t ee' I CONNECTOR~ TO IlR M
Page 104 and 105: Patrick M cGuire W BSHGR 102 Dunca
Page 106 and 107: SECURE THIS END TO BOT TO M PL ATE
Page 108 and 109: Then buy a small can of red spray e
Page 110 and 111: Description a) Print frame (same as
Page 112 and 113: MEMORY KEYER BREAKTHROUGHI The rema
Page 114 and 115: INTIMIDATED BY MORSE CODE? THE NEW
Page 116: RTTY Demodulators ~~;~~ e $449. 00
Page 119 and 120: BUU Directlromthe Tri·EK@ Factoru
Page 121 and 122: • CALL 1 N8AD 2 KB8/>J'1 l WAlDCS
Page 123 and 124: • •• Computerize your log boo
Page 125 and 126: is sim p lif ied and refined t o al
Page 127 and 128: upts but often gets in the last wor
Page 129 and 130: signals. It decides tra nsm itter o
Page 131 and 132: .... Reader SelVice- see page 274 7
Page 133 and 134: IIEW IIIFFEIEIiT FROM BARKER & WILL
Page 135 and 136: Have you ever wondered why the best
Page 137 and 138: P ~ESCA l£ I NPUT C2 C1 I~ ;;-----
Page 139 and 140: A 40-pin socket must be used for th
Page 141 and 142: un til it changed tone and wo und d
Page 143 and 144: MF.J 941C Versa Tuner II , i i 11f!
Page 145 and 146: Two fuses are incl uded fo r safe t
Page 147 and 148: pu shed for th e switch to SSB and
Page 149 and 150: October 1960 .. .....de W2NSD PI ,a
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A M ATEUR RADIO 73 6' YIO carRad¥
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73 1964 January INCENTIVE LICENSING
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John W . CampbeJl W2ZCU How To Be A
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would simply melt the m selves in
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73 1966 Oc tober de W2NSD/l de W 2N
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162 73 Magazine . Oct ober, 1980 19
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1969 October ...de W2NSD/l rr ay ne
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1971 Decem ber Mean ingf ul Conu cu
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Jean Shepherd K20 RS Some Guys Make
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1973 July .......····n~ 73's HA
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1975 August 1: ~ '3~fr EOi TORJI'\.
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~ ~ >. :; ....., co t" O) , f "i'
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1978 August : :~~. Ir EOITOM'U8USHE
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1979 March ( UJoTOM'V 8USHEII W. ..
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manage o n 4o-mete r phone for the
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Fig. 3. Basic patte rn developed fr
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of-contac t are three: New England,
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32 ' I " 3 2 '" 3 2 ' . " 3 2 ' I "
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Gilding the Lily - FT-101 mod for c
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Mike Mods for the KDK-2016A - impro
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Clock Blocks a compendium of TTL an
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ea BOOK CIIlOS I"lV ERT ER "0001 "
Page 196 and 197:
73 Magazine Staff Build a Better Ba
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TUfTS Electronic Department Store,.
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TUfTS Electronic Department Stor~"T
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Page 204 and 205:
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TUfTS Electronic Department Stor~.T
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t.a IO,. H r "001 ,j- ± " ~ cs r u
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and 5. The purpose of the divide-by
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3500. To do this division by 3500,
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l i mi t er o utput on p i n twe lv
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Radio Amateurs! Tempo Handh
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79. Late in 1975, as the JARL looke
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QRP ARCI ANNUAL OCTOB ER QSO PARTY
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("----~) FUNl from page 28 5) The "
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you need a friend w ho works fo r M
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held, and the Georgia State CW Asso
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FREE! RADIO AMATEURS WORLD ATLAS wi
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DireCiional RF Wallmeler Dielectric
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control of an amateur radio station
Page 237 and 238:
SatelliteT~ FORTHE HOME Sick of Net
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schematics, formulas, construction
Page 241 and 242:
Th e Comm issio n s tated , " Lo ok
Page 243 and 244:
MFJ RECEIVER ANTENNA TUNER/PREAMPLI
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c lasses are proving that it is pos
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74l SIllITTL IUSooN l4lS0 2N " l50'
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NO BULL SHi", • Over the past thi
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7294 N .W. 54 STREET MIAMi. FLORIDA
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• linear Converters for SS B, CW,
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L.. ....J ...... 28 22 North 32nd S
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ATTENTION IC·2AOWNERS: IC-2ATONE D
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smsat !!!ill. CP'O -.4,,...a_ " N '
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BLAK-RAY Ultraviolet Intensity Mete
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PROUDLY PRESENTS the GLOBAL SPECIAL
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TOLL FREE # (800) 528·0180 (for or
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MICROWAVE COMPONENTS COMPUTER I.C.
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• NOV ICE STUDY GUIDE-SG7357-Here
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= = === = TEST E QUIPMENT =====:::;
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EALER PROPAGATION San Jose CA Bay a
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