VHF_engineering_TX-144B_TX-220B_使用说明书手册_I3OPV

TX 144B and TX 220B5010602REV.01SEPT 1977TRANSMITTER KITMEASURES ONLY2”X6”X1”A one watt exciter using four RF transistors,two diodes,and one integrated circuit.The RF transistors areoperating well below their ratings allowing long keying periods without damage.The exciter may be used aloneas a transmitter or with our PA Series amplifiers for a 15 or 25 watt station.Some of the features are:.Nominal output 1%wattsDeviation adjusted to 10KHz.IC audio with clipping and active filter●·All spurious outputs down30 db or more.Temperature compensation crystal trimmerZener regulated oscillator.Uses readily available 12 or 18 MHz crystals(18MHz for 220).All tuning coils prewoundPredrilled and tinned G-10 Circuit board.Easily built and tuned in one evening.Multi-channel option available with addition of CD-2 crystal deck.Will easily drive our 15 and 25 watt amplifiers to full outputhfengineeringDIVISION OF BROWNIAN ELECTRONKS CORP.320 WATER ST./BINGHAMTON.N.Y.13901/Phone 607-723-9574