Note
QST, Dec 1953, p. 141.
Allied Radio catalog 1955 (copyright 1954)
Allied Radio catalog 1956 (copyright 1955), p. 201.
CQ, Apr 1962, p. 117. (Limited quantities)
QST, Apr 1955, p. 81. (information on conversion kits)
Walter Ashe catalog 1957 (probably issued in 1956), p. 5.
Allied Radio catalog 1957 (issued 1956), p. 249.
Allied Radio catalog 1959 (issued 1958), p. 378.
Allied Radio catalog 1961 (copyright 1960), p. 394.
Kit form or fully assembled.
The 20A had band-switching coverage of 160-10 meters. Peak output on SSB, AM, CW, and PM was 20 watts. Its "magic eye" tube served as a carrier null and modulation peak indicator. A calibrate circuit allowed the operator to "talk" his VFO signal on frequency using the station receiver.
References:
Brief technical description. Radio News, Oct 1955, p. 69,
Improving Speech. CQ, Apr 1960, p. 49.
