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TUfTS Electronic Department Store,.TUfTS Weller" Industrial & Service Equipment, Soldering Equipmenf, Accessories &OtherTools forthe Professional orHobbyist Model WTCPN, Contro lled-Output Sol deri ng Stat ion $70.80 h CIuStvl! Welle, c losed loop , lOW-VOltag e eirc", l autonatrCally eON r
TUfTS Electronic Department Store,.TUfTS Tools, Parts, Accessories .;: $8.87 Diagonal Pliers -~ ~ 'S4CG $ 6.60 ..... - Mdg ends 56 1-5675-420 7S" leng th w ,'h UHF CB plugs $9.29 on bo th ends 1-58100·.:10 l Oll' ieflg lll ....,tll 510.99 UHF ca plu gs on bolh enos A PPUCATI ON S Used ;'IS Piltct> ee-es lor mob"'" " base $l ahOfl SWR " ~er mel ee' e losS 'S c"I,eal ttles .. cables w ,1l 0tJ1 pe . fo. m RG S8/U c aure s 0 1 t h e $li me leng th No.6S1 No. 652 No. 653 No . 651 No . 658 No. 65 6 No. 668 No . 662 No. 666 $10.08 3 feel 5 feel 10 feel 1 foot 3 fee, 5 lee l 3 f e. I 5 l ee' 10 f eel 104CG Wi re Stri pp er an d Cu ller CullC' ' tripp er ao'l
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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
Page 147 and 148: pu shed for th e switch to SSB and
Page 149 and 150: October 1960 .. .....de W2NSD PI ,a
Page 152 and 153: A M ATEUR RADIO 73 6' YIO carRad¥
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 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 208: TUfTS Electronic Department Store,.
Page 211 and 212: t.a IO,. H r "001 ,j- ± " ~ cs r u
Page 213 and 214: and 5. The purpose of the divide-by
Page 215 and 216: 3500. To do this division by 3500,
Page 217 and 218: l i mi t er o utput on p i n twe lv
Page 219 and 220: Radio Amateurs! Tempo Handh
Page 221 and 222: 79. Late in 1975, as the JARL looke
Page 223 and 224: QRP ARCI ANNUAL OCTOB ER QSO PARTY
Page 225 and 226: ("----~) FUNl from page 28 5) The "
Page 227 and 228: you need a friend w ho works fo r M
Page 229 and 230: held, and the Georgia State CW Asso
Page 231 and 232: FREE! RADIO AMATEURS WORLD ATLAS wi
Page 233 and 234: DireCiional RF Wallmeler Dielectric
Page 235 and 236: control of an amateur radio station
Page 237 and 238: SatelliteT~ FORTHE HOME Sick of Net
Page 239 and 240: 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
Page 245 and 246: c lasses are proving that it is pos
Page 247 and 248: 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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