. QST . usedfor high efficiency. Takes any freq. from to 30 mc. Idealfor General Class, Novice. CAP, CD, Industrial. Sold directfrom our factory, ready to operate. 40 to 50 watts input,Phone-CW. Complete with 8x14x8 cabinet, 40 meter coils,xtal, tubes: 6\6 osc, 807 final, 5U4G rect., 6SJ7 xtal mikeamp., 6N7 phase inv., 2-6L6s PP mod. Wt. 30 lbs. $, 20, 10 meter coils per band. 160 meter coils $ 130 FOR 120 TO 130 WATTS — $ 242 FOR 2 METERS—45 WATTS INPUT —5145 FINAL. Complete with mobile connections, powersupply, tubes, xtal. Xtal mike input. Uses 8


. QST . usedfor high efficiency. Takes any freq. from to 30 mc. Idealfor General Class, Novice. CAP, CD, Industrial. Sold directfrom our factory, ready to operate. 40 to 50 watts input,Phone-CW. Complete with 8x14x8 cabinet, 40 meter coils,xtal, tubes: 6\6 osc, 807 final, 5U4G rect., 6SJ7 xtal mikeamp., 6N7 phase inv., 2-6L6s PP mod. Wt. 30 lbs. $, 20, 10 meter coils per band. 160 meter coils $ 130 FOR 120 TO 130 WATTS — $ 242 FOR 2 METERS—45 WATTS INPUT —5145 FINAL. Complete with mobile connections, powersupply, tubes, xtal. Xtal mike input. Uses 8 mc. xtals. Swing-ing link matches 52 — 300 ohm antennas. Same cab. as 240.$ Also 6 meter model. 150 WATT ANT. TUNER matches any antenna, 8x10x8cab. $ Coils extra: 160 — $, 80 — $, 40 — $,20 —$, 10 —$ VFO FOR ANY OF ABOVE TRANSMITTERS — $ full amount or $25 with order— balance LETTINE RADIO MFG. CO. 62 Berkeley St. Valley Stream, N. Towers and Masts Amateur radio types • Guyed towers torFMTV antennas • Vertical Radiators •Microwave towers * Commercial Communica-tion towers * Transmission line supports, etc. K feM 1 K K \m\ M SERIES 650 Height to 80 Width-— 10 section—22 lbs. Use—Mast for TVAmateur, Port-able, and Wiretype antennas * Between CG of Tower Legs SERIES 2400 Height to 280 10 section—112 lbs. Use—Tower forTrylon RotaryBeam. AMBroadcast, andMicrowaveantennas SERIES 6000 Height to 600 Width-60 10 section—653 lbs. Use—TV Broad-casting andcurtain antennasfor InternationalBroadcasting Try/on Towers ore made only by WIND TURBINE CO., westchesterpa Bridge (Continued from page 31) Ci is also tuned for minimum or a null. It mayhe necessary to readjust both Ci and C2 to getthe best possible null. The taps on L2 may haveto be moved toward the center of the coil if agood null isnt obtained with the tap near theoutside. However, though there may be morethan one set o


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915