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A M ATEUR RADIO 73 6' YIO carRad¥ ~ 500 Wlinear f/VIl.MI Mixtr M~tioo 1962 August New He adqu arters Building 73 MAGAZINE 152 73 Magazine . October, 1980
May 1963 de W2NSD lo"• • " ..y dl . No ti ce to ARR L Mem bers It is now obvious th at QST i~ going to keep heating the drum s for their buHding fund until you all pay up. If you 'd send in the money th en QST could get back to their detailed opera ting news rep orts. Afte r all, Egypt h as its pyra mids and China ha s its wall, so why should n't we hav e OUf ARRL Skyscraper? Get with it fellows; you joined the AR RL , now suppo rt it in its time of crisis. or course th is won', stop you from needling them a bi t by marking your check ou t 10 the ARRL BUI LD I ~ C: F U:'\D (73 W IXG ) . Send it to ARRL, W f>st H artford I . Conn. Save just a litt le in ca se we ge t too jealous of the new budding and ha ve to have a sha nrv fun d for i3 (we'd nev er be ab le to get enou gh for a hnil:lillg:) . 73 Pa rts Kits :',Iy introduction of parts kits for ou r simpler construction pr ojects back in March brought on mixed reacti ons. The readers wr ote in cc mplimentmg us on th e move . Some even wen t so far as to order kits, though not many. Rememberi ng how long it took the Bookshop to build up steady ord ers I was en couraged th at even tw enty kits should be ordered the first mont h . CQ. in an attempt to hu rt us w ith the parts d istri butors, wher e my latest figu res show we are outselling CQ by better than two to one , sent out a letter viewin g th e 73 kits wit h gr eat alarm and wo rrying that we might shortly put parts di stributors out of bu siness. Thou gh their intent was unfriendly , th e resu lt was very helpful for CQ 's hysteria made m any parts distributors awa re of our kits and the y were thus more disposed to go a long with l IS on handling th e pa rts kits through th eir com pan ies. It was ob vious fr om the first we would not be abl e to finan ce more than a short test of th e kit idea . You see, kee ping our subscrip tion rate s an d adv ertising rates ve ry low keep us from makin g any money, so if somethi ng costs m ore than a few hundred dollars we have to forget it . The kit program won't make any money for anyone for a long time and I doub t if I could have convinced many parts distribut ors (or an y) to pa rticipate without CQ's attac k. Now that we are ge tt ing better organized \...-ith the kits we will be looking in to our b ack issues for good kit pro jects and will try to work up a good comp rehensive kit list for you to sel ect from. A pr il Cover Old timers probably got a kick ou t of our April F ool cover last mont h. I am happy to repo rt that th e HQ gang seemed to enjoy it . . . see, they're not as stuffy as you thought . I did con sider do ing a p arody of CQ , but cou ldn 't thi nk of an ything fun nier than the)' have now so tu rned my at ten tion to QST. Smal l Issue \ Ve had plan ned upon running 128 pages agai n this mon th . bu t several factors interfered. f or one thing the cost of ru nni ng the 128 pages last mon th was considerably higher than had bee n est ima ted . Then 1 was laid low by a cold at advertiser harassment tim e and d idn't get qui te as many ads this month as I could have . And finally, Virgin ia. who does most of the work around here, had to tak e a cou ple of d ays o ff to h ave a baby . Next mont h we 're goi ng to ha ve a really b ig issue, so wait it out. (It's a gtrl.) ( m oro n 4 ) 13 MACAZINE 73 Magazine · Octo ber, 1980 153
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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
Page 100 and 101: "' 0." -t ee' I CONNECTOR~ TO IlR M
Page 102 and 103: 1'::1" ~~4 ""ATTENTION MOBILE HAMS
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
Page 154 and 155: 73 1964 January INCENTIVE LICENSING
Page 156 and 157: 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
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TUfTS Electronic Department Store,.
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
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SatelliteT~ FORTHE HOME Sick of Net
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schematics, formulas, construction
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Th e Comm issio n s tated , " Lo ok
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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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