Homebrew 20m CW Transceiver

Freq. range14.000 - 14.090 MHz
RX partSuperheterodyne with RIT and side tone
RF amp.2SK192A
MIXSN16913
LO-OSC2SC2458, super VXO with two 11.059 MHz X'tals
Frequency doubled
IF filter4-element 8MHz HB ladder X'tal filter, BW=500Hz
IF amp.Two 2SK210's
DetectorSN16913
BFO2SC2458
AF amp.LM358 (dual OP-amp.) and LM386
TX part
MIXSN16913
Carrier-OSC2SC2458 with offset freq.
Buffer amp.2SK168
Driver amp.2SC2053
Final amp.2SC1969
Output power3 Watts with 7.5 Volts
T/R switch
Full break-inTwo PIN diodes Back-to-back in RX antenna and audio mute with 2SK168


MINOWA, Makoto
7N3WVM
Last revised 1997-09-01.