. QST . Write Dept. T for Catalog When writing, please specifytype of lower in which you areinterested, height and expectedantenna load, (make and modelnumber if possible). This infor-mation is necessary to give youaccurate advice. E-Z WAV TOWERS inc 5901 E. BROADWAYP. O. BOX 5491 « [ PHONE 4-3916TAMPA, FLORIDA 103 Eliminafe those unwantedaudio frequencies .••. AMATEUR NET The new R. L. Drake Audio Filter is an effec-tive, easily attached accessory that connectsbetween crystal mike and transmitter. Care-fully designed for correct low and highfrequency cut-off, this new Audio Filter willnot cha
. QST . Write Dept. T for Catalog When writing, please specifytype of lower in which you areinterested, height and expectedantenna load, (make and modelnumber if possible). This infor-mation is necessary to give youaccurate advice. E-Z WAV TOWERS inc 5901 E. BROADWAYP. O. BOX 5491 « [ PHONE 4-3916TAMPA, FLORIDA 103 Eliminafe those unwantedaudio frequencies .••. AMATEUR NET The new R. L. Drake Audio Filter is an effec-tive, easily attached accessory that connectsbetween crystal mike and transmitter. Care-fully designed for correct low and highfrequency cut-off, this new Audio Filter willnot change natural voice quality. iiiiat 187 toi700 no insertion loss no controls no power required Effedively limifs audio range fo keep your signal confined fo ihe proper channel. Better side band suppression on SSB. On SSB phasing transmitters, it enables the use of smaller capacitors in the power supply. Only 4 long x 1 % diameter. No wiring. Fitted with mike connectors and 5 Vi cable. Reduces acoustic feedback in PA systems. Hn^H^ See page 64 - July 55 QST ■^■^■na improves the selectivityoff your present receiver: Improved Q-Multiplier Provides either a sharp peaked IF curve or deeprejection notch. Easily attached. For 455 kc. IF. Model 583 $ Amateur Net Also available for 915, 500 and 262 kc. IF. Available from your distributor who handles Dra
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
