Note
QST, Jan 1956, p. 126.
QST, Mar 1956, p. 111. (Photo)
Walter Ashe catalog 1957 (probably issued in 1956), p. 12.
QST, Jan 1959, p. 169. (Good information)
CQ, Oct 1964, p. 104.
QST, Apr 1965 p. 136.
The 2 meter transmitter in the TR-20 series added a buffer/multiplier stage to the TR-20/50’s lineup. Its final ran 20 watts input. It had the same speech amplifier and modulators as other TR-20 transmitters.