2_W_FOR_20_METER_CW

Published:2009/7/14 2:29:00 Author:May | From:SeekIC

Motorola 2N4124 driver operates as class B amplifier. With no signal, collector current is near zero, minimizing current drain when key is up. Tank circuit of RCA 2N5189 final is similar to that of driver. Double-pi network in output assures good harmonic attenuation. RMS values of BF voltages are marked with asterisks. Protective diode CR1 is any silicon rectifier. For portable use, supply can be lantern battery.-C. E. Galbreath, Low Power Solid-State VFO Transmitter for 20 Meters, Ham Radio, Nov. 1973, p 6-11.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/2_W_FOR_20_METER_CW.html

Print this Page | Comments | Reading(3)