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LisT of AdvERrisERS •PlNse c Ol'ltect Ihu e e~ 1Hn. dirwclly. To receive full in formation from our advertisers please complete the following postaqe-paid card. R.S. No. Page R.S. No. Page R.S. No. Pege R.S. N o. Pege AEAlAdvanclld Elect. Applies., Inc. .... , , , . . ... 73 406 Alaska Mlcro ave Labs 93 479 Alume Tower , .. ," .. , .. 123 A,A.P.. . 89 Amateur Electronic SupplylTen-Tec ......................... ... . 47 5 Amateur·Wholesale Electronics , , 35 7 American Cryslal Supply. _95 Ap p ll , &. Equipment Co.. Inc . .• 113 Associated Radio. _. . . . 72 to Avanti Comm 72 402 BNF Enterprises, , .. 128 11 Barker &. Williamson 28, 29 476 Badman 126 420 Benjamin Michael Industries. . 63 13 Clegg . . 59 89 Cluttarhee Modu lar ConSOles 55 332 Commerce Tou.s , , 95 382 Comm, Concepts. Inc 95 377 Communications Electronics .,........... . 144 15 Comm. SpeClaHstS 10, 11 Conley Radio Su pply 77 Crown Micro Productll 50 70 CubiC Comm 40 330 Debeo Electronics 59 41 1 DGM Electronics. Inc ,. . . . 100 482 Desco Industries. . . . .. 122 346 Dala Service. .. . . . . . . . . .. . 126 Dayton Ham.ention '61 . . .. 49,102 416 Digi·KeyCorp. . . . . . . . .135 DIgi tal Research Parts 142 80 Microcomputlng 110 419 Electronic Speclailles lOll 466 Electronic Specialists 122 400 Engineering Consultinl/ Service ....... .. . . . .. . 1n 413 Equtpment E.chanl/e 113 • Erickson Comm 93 323 Fo.·Tanl/oCorp 13 27 G.I.S.M.O 97 410 GaTSer.lceCo 128 405 General Peripherals. . . . . 11 1 Global Electronics 126 393 H.M. Goodwin. . . In 417 Gotham Antenna 113 352 Grove Enterprises 109 345 Ha l Comm.. .. 21 31 Hai·Troni 77 32 Ham Radio Genter , 37 415 H am Radio CenlerlYaesu Electronics 69 • H am Radio Oullet 3 33 Hamlronies. Ny 137 303 Heath Co 15 34 Henry Radio Co. II 461 Henry Radio. ... . . . . .. 122 Hustler, Inc 83 463 Hy-Galn 01•. at Tele. Comm" Inc. .... .... .... ... . . . ........ . 123 ICO M , . . 9, 19 35 Info-Tech, Inc. .. .. 35 41 4 Inotek Engineering. . . . .. 126 36 International Crystal Mfg. Co. .. ............... 101 409 JDR Mlcrode. lces 103 38 Jameeo Electronics 145 39 Ja n Crystals 63 KLM Electronics 13. 38, 43, 47 423 KW comrcr Systems. Inc 76 Ka nt ron ies 30. 101 KB Mierocompullng. . . .. 1to Kenwood Co• . IV, 7, 26 424 LCC Engineering. .... . 114 43 Lunar etececnres.. 105 47 MFJ Enterprises. . " . . 51, 55. 59, 63 460 MFJ Enterprises 38 464 MFJ En!erprlses 122 46 MHz Electronics 130-133 56 Macaw Electronics. . .. . , 67 44 MacrOlronics. ... . 109 45 Madison Electronics. . 111 46 Maggiore Eiectronie l ab 47 49 Micro Control Specialties 100 313 Micro Ma nage ment Systams 42 50 Mierocralt Corp. .. . .. , 113 395 MiclOverter,lnc. . . ..1 15 363 Micro-80, Inc.. . .. ... . .. . .. 95 51 Mlcrolog Corp. . 32, 33 52 MldCom Electronics, Inc 65 30e JW. Mi ller Di.islon eentoeuerrtee .. . .. .. . .. . .... . 39 316 National Comm. GroupCo..... 102 412 Nemal Electronics. . .. . 126 Orbit Magazine. , . . . 100 4-04 p.B. Redia se-vrce.. . 103 P.C. eteetrcnree.. . 58 • Pelomar Engineers. , . . 4 380 Panasonlc. .. . 41 421 Phillips Tech. Eleclronlcs 128 Pecos Va lley Amateur Rad io Supply 110 60 Quesl Elsctronics , 134 61 Redlo Amateur Call1)ook, Inc 36 477 Radio Shack... . 124 381 Radio Syslems TeCh., Inc 95 397 Radio World. .. 36 62 Ramsey Electronics 136, 143 ROChester Hamlest . .. .. 129 401 RogoComputer Products 128 416 Rolin Oistrlbutors 5O 374 SK Electronics t28 376SMP 95 sectrcorcs International, Inc 3\ 333 Senlry Mfg. Co 105 65 S-F Amateur Rad io Services. . , . 50 408 Securltron 129 64 Semiconductors Surplus. , 136-140 • 73 Magazine 78-82, 94, 129. 146 66 Signalcrallers , .. " 50 367 Slep Electronics. , . .. . 112 360Soundpower" 129 309 Spacecoast Research 129 Spectronlcs. . . .. . . . . . . . 14t 68 Spectrum Comm. . . . . . .22.23 399 Spencer Products. . . . .. 111 403 Stewart Quads. . . .. 111 Tan·Tec, Inc. . 16. 17 76 Trac Elactronics 93 37 UPI Comm. Systems, Inc 99 Unl.ersal Communications .......................... . 30.102 422 Va lo r Enterprises 115 311 Vanguard Labs 111 373 Van Gorden Eng ln811rl ng. . . 108 90 VoCom Prod ucts Corp. .47 79 Wacom Products. .... 103 eo Western Electronics. .. .,113 82 Xite. Co rp. . . .... 95 63 Yaesu Electronics Corp. ........ . COv. III . 25 465 Yaesu Electronics Corp 122 336 Z Associates.. . . 111 1SMAGAZINE , ETC. To order, complete the following postaqe-paid card, or itemize your order including detailed credi t card information or check and mail to: 73 Magazine/Mail Order Dept.lPeterborough NH 03458. sroooc ST2500 ST0500 srrooc ST2501 BK7307 BK7309 CT7305 crreoe CT7313 CT132Q CT1325 CT1394 BK730B BK7381 BK7304 BK7321 BK7322 BK7325 BK1028 lIem Price 73 DIPOLE & LONG WIRE A NTE NNAS ...............................................................$ 5.50 73 BACK ISSUE $ 3.00 73 BACK ISSUES-25 OUR CHOICE..$12.00 73 BACK ISSUES-5 YOU R CHOICE.$ 8.75 73 BACK ISSUES-l0 YOUR CHOICE ...............................................................$14.00 73 BACK ISSUES-25 YOUR CHOICE ........................ .......................... ...........$25.00 BEHI NO THE DIAL.. $ 4.95 CHALLENGE OF 160 $ 4.95 COOE TAPE-5WPM $ 4.95 COOE TAPE-8+ WPM.......... ....$ 4.95 COOETAPE-13 + WPM.... .....$ 4.95 COOE TA PE_20 + WP M........ ...$ 4.95 CODE TAPE_25 + WPM $ 4.95 COOE TAPES (A NY FOUR A BOVE) $15.95 THECONTESTCOOKBOOK $ 5.95 40 CO MPUTER GA MES $ 7.95 GIANT BOOK OF AMATEUR RADIO ANTENNAS $12.95 A GUIOE TO HA M RAOIO $ 4.95 HOBBY CO MPUTERS ARE HERE $ 4.95 HOW TO BUILO A MICROCOMPUTER & REALLY UNDERSTAND IT $ 9.95 IC OP AMPCOOKBOOK $12.95 Cetelog , BK731 2 BK1033 BK1340 CT1300 BK7310 BK1305 BK1015 BK1185 8 K7302 QW02!iO QW0500 QX0250 QX0500 0'1'0250 QY0500 BK 1()44 BK7347 BK 1059 BX1000 BX1001 BX1002 Uem MAGIC OF HAM RAOIO $ 4.95 MASTER HANDBOOK OF HAM RADIO CIR· CUITS " $ 8.95 THE NEW HOBBY CO MpUTERS $ 4.95 N OVICE THEORY TApES $15.95 OWNER REPAIR OF RADIO EQUIP MENT ............................................................ $ 7.95 POW ER SUPPLY HAND600K $ 9.95 PRACTICAL ANTE NNAS FOR THE RADIO AMATEUR $ 9.95 THE PRACTICAL HA NDBOOK OF FM REPEATERS $ 9.95 PROPAGAT ION WIZARO'S HANDBOOK ...............................................................$ 6.95 QSL CARDS-STYLE W-25O... . ..$ 8.95 QSL CAROS-STYlE W-500.." $13 .9~ QSL CAROS-STYLE X-25O $ 8.95 QSL CARDS_STYLE X_5OO $13.95 OSl CARDS_STYLE Y_250 $ 6.95 QSL CARDS_STYLE Y ~5OO $13.95 RF a DIGITAL TEST EQUIPMENT $ 5.95 RTTY HANDBOOK $ 5.95 RTL COOKBOOK $ 6.50 SHELF BOX - l $ 2.00 SHELF BOXES-2-7 SHELF BOXES-8 ANO UP Price $1.5O each $1.25 each BK735t CT7350 SGt081 SG1080 SG7357 l67359 LB7360 L67361 LB7362 BK7348 BK1063 6Kl064 6K7382 BK1069 BK7368 BK7370 BK1184 BK7315 " em Prln SOME OF THE BEST FROM KILOBAUD ..... ... . . .. $10.95 SSB THE MISU NDERSTOOD MODE..s 5.50 SSTV TAPE $ 5.95 STUDYGUIDE-ADV.CLASS $ 6.95 STUDY GUIDE-EXTRA CLASS $ 5.95 STUDY GUIDE~NOVICE CLASS $ 4.95 TEST EQUIP LIB V I _ COMPONENT TESTERS.... ....$ 4 95 TEST EQUIP LIB V2-AUOIO TESTERS ............................ ...................................$ 4.95 TEST EOUIP LIB V3-RAOI0 EQUIP..$ 4.95 TEST EQUIP LI B V4_IC TEST EQ ..$ 4.95 TOOLS & TECHNIQUES.. ..$ 4.95 TIL COOKBOOK". ..$ 9.50 TVT COOKBOOK".".,............. ..$ 9.95 UNDERSTANDING a PROGRAMMING MiCROCO MPUTERS $10.95 VERflCAL BEAM & TRIA NGLE A NTNS .............. .................................................$ 5.50 VHF ANTENNA HANDBOOK $ 5.95 WEATHER SATELLITE HANDBOOK.$ 2.50 WORLO RAOIO TV HAN0600K $16.5O WORLO REPEATER ATLAS $ 4.95 82 73 Magazine. April, 1981
Tribander The Rugged, Reliable 10, 15, and 20-M tel1 Yagi You've Been Waiting for Is Now Available. This exciting new tribarder sets the poce for depenc:lable perforrnqJ~e with its two in m e trap design - and the solid constructicn you've c expect from Hustler. In fact. its durabie design is partially based dH corcepts used in the time-tested and world-renowned ftJstler 4-BOhdTra Vertical. The 3-TBA is the smallest full-Ieatured tribander availableloday. il offers excellent front to back ratio and SWR at resonance. Plus, it is engineered toprovide the widest possible bandwidths with superior power handling copocnv, A special heavy-duty saddle prevents rrechanical distorlion. Although light enough to ship UPS. a nd enable use of srroller, less expensive rotors . the 3-TBA can morage windloads up to 100 MPHllts turning radius is onlv 14 feet. All in all. you can't surpass the Hustler 3-TBA for top !riband qoolity: Hus~er ~". - still the standard of performance. .. 73 Magazine· April, 1981 83
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• April 1981 $2.95 DID TEURS
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The History of Ham Radio -partXIII.
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CONVENIENT TOP CONTROLS • UP/DOWN
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