TRANSMIT_MIXER

Published:2009/7/13 22:28:00 Author:May | From:SeekIC

Used in low-power transceiver for 20-meter amateur band. VFO input, tunable from 5 to 5.55 MHz, is combined with 9-MHz output of crystal oscillator in Motorola MC1496G double-balanced modulator to give 14-MHz output for transmitter power chain. Supply voltage (+12 V) is applied only when transmitting. Transformers are wound on Amidon T-50-6 toroids or equivalent. Balance is Balance is maintained in mixer with center-tapped tuned circuit in output, made by putting 15-turn bifilar winding on toroid core and tuning series combination. Article gives all other circuits of transceiver.-W. Hayward, Low-Power Single-Band CW Transceiver, Ham Radio, Nov. 1974, p 8- 1 7.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Audio_Circuit/Mixer/TRANSMIT_MIXER.html

Print this Page | Comments | Reading(3)