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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
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Antenna azimuth for ATS·3 from Was
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---SCR1000VHF-SCR4000UHF---- 7i?
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Joe wesrennaver W4FE:. C 155 Wood f
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f MEMORY KEYER BREAKTHROUGHl The re
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The Arcane Art of ATV the transvert
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Th e 2N2219 t ra nsistor specif ied
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Photo E. l eff WB8 RIY, about 5 mil
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Pho to G. Rack-mount installat io n
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Robert B. Grove WA 4 PYQ Grove Ente
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proveme nt over the origina l To uc
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channe l l ; ente r 139.1 MHz into
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detector. Be sure receiver is sw it
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Joseph H. Cowen WA 5TUM P.O. Box 76
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an advance piece and aft erthe-fac
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School and ret ired surgeon Dr. N i
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73 Magazine Staff Field Strength fo
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Photo B. Front of th e con verted Y
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TE1: ANTENNA SYSTEMS l-BoO-654 -}2}
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Robe rt M . Brown W9HBF 561 1 M idd
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c o u ra g i n g a n d wo r th repo
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elay (I used a 3PDT type) . When th
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'" '" 117 VAC NEON DIAL LITE .l 117
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Fig. 9. This view sho ws how the ra
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~ ''' ' '' '' '' -- sli de the cap
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"' 0." -t ee' I CONNECTOR~ TO IlR M
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1'::1" ~~4 ""ATTENTION MOBILE HAMS
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Patrick M cGuire W BSHGR 102 Dunca
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SECURE THIS END TO BOT TO M PL ATE
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Then buy a small can of red spray e
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Description a) Print frame (same as
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MEMORY KEYER BREAKTHROUGHI The rema
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INTIMIDATED BY MORSE CODE? THE NEW
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RTTY Demodulators ~~;~~ e $449. 00
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BUU Directlromthe Tri·EK@ Factoru
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• CALL 1 N8AD 2 KB8/>J'1 l WAlDCS
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• •• Computerize your log boo
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is sim p lif ied and refined t o al
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upts but often gets in the last wor
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signals. It decides tra nsm itter o
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.... Reader SelVice- see page 274 7
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IIEW IIIFFEIEIiT FROM BARKER & WILL
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Have you ever wondered why the best
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P ~ESCA l£ I NPUT C2 C1 I~ ;;-----
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A 40-pin socket must be used for th
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un til it changed tone and wo und d
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MF.J 941C Versa Tuner II , i i 11f!
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Two fuses are incl uded fo r safe t
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pu shed for th e switch to SSB and
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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
- Page 158 and 159: would simply melt the m selves in
- Page 160 and 161: 73 1966 Oc tober de W2NSD/l de W 2N
- Page 162 and 163: 162 73 Magazine . Oct ober, 1980 19
- Page 164 and 165: 1969 October ...de W2NSD/l rr ay ne
- Page 166 and 167: 1971 Decem ber Mean ingf ul Conu cu
- Page 168 and 169: Jean Shepherd K20 RS Some Guys Make
- Page 170 and 171: 1973 July .......····n~ 73's HA
- Page 172 and 173: 1975 August 1: ~ '3~fr EOi TORJI'\.
- Page 174 and 175: ~ ~ >. :; ....., co t" O) , f "i'
- Page 176 and 177: 1978 August : :~~. Ir EOITOM'U8USHE
- Page 178 and 179: 1979 March ( UJoTOM'V 8USHEII W. ..
- Page 180 and 181: manage o n 4o-mete r phone for the
- Page 182 and 183: Fig. 3. Basic patte rn developed fr
- Page 184 and 185: of-contac t are three: New England,
- Page 186 and 187: 32 ' I " 3 2 '" 3 2 ' . " 3 2 ' I "
- Page 188 and 189: Gilding the Lily - FT-101 mod for c
- Page 190 and 191: Mike Mods for the KDK-2016A - impro
- Page 192 and 193: Clock Blocks a compendium of TTL an
- Page 194 and 195: ea BOOK CIIlOS I"lV ERT ER "0001 "
- Page 196 and 197: 73 Magazine Staff Build a Better Ba
- Page 198 and 199: TUfTS Electronic Department Store,.
- Page 200 and 201: TUfTS Electronic Department Stor~"T
- Page 202 and 203: TUfTS Electronic Department Store,.
- Page 204 and 205: TUfTS Electronic Department Store,.
- Page 206 and 207: TUfTS Electronic Department Stor~.T
- Page 210 and 211: Ro y Cawthon N4CEY 2402 Pl ymouth L
- Page 212 and 213: o e 1 0 1 e - t-- oiS> - - - 0'"' .
- Page 214 and 215: [ IMH, SECT ION 5 SECTION BCD T HUM
- Page 216 and 217: ca (.OOtil "rc + 12 '1 CIO .0 01 f
- Page 218 and 219: circ ui ts; ho we ver, large preci
- Page 220 and 221: t ries o ut of a possibl e 319 are
- Page 222 and 223: G. C. Bragg ini, Via Rama 1, Ispra
- Page 224 and 225: Post Office will become t he off i
- Page 226 and 227: Element 1: See diag ram. Element 2
- Page 228 and 229: ( SOCIAL EVENTS LisNngs in this col
- Page 230 and 231: (no o ne-day tab les). Double booth
- Page 232 and 233: SLEP mail-order specials "","'PO s-
- Page 234 and 235: ( 47 em Part 97 IDodIet No. 19852;
- Page 236 and 237: BA SIC AUTO PATCH • Access, ' Dis
- Page 238 and 239: KAYLA'S KIPLING (--"'" I have been
- Page 240 and 241: fro m p age 12 LOOKING WEST o swer,
- Page 242 and 243: ( NEW PRODUCTS J from page 32 In ad
- Page 244 and 245: W2NSD/i NEVER SA.Y DIE edito r ia l
- Page 246 and 247: There was also a demon stration of
- Page 248 and 249: NEW! I~: :'~:~ :·ffl Tunable 420 M
- Page 250 and 251: W2AU Balu n World fam o us W2AU Bal
- Page 252 and 253: PERF ECT f OR USE WIT H A TlME8ASE.
- Page 254 and 255: ;~: ,,- w " IZI 2822 North 32nd Str
- Page 256 and 257: FM MINI MIKE MINI KITS YO U HAVE SE
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• FREQUENC Y RA NGE : Receive and
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7403-5 741G-S 7413-S 7438-S 7444-5
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ASSOCIATED RADIO 913-381-5900 8012
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~~ TOLL FREE # (800) 528·0180 C!J
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@ MOTOROLA SelTJiconductor MRF454 $
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P.O. Box 401244-E Garlan d , TX. 75
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==== 79 TEchNicAL LibRARY =~~~ •
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e 73 DIPOLE AND LONG ·WIRE ANTENNA
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· of AdvE..R11S LIST R.5. No. Pilg