Note
QST, Nov 1964, p. 103.
Allied Radio catalog 1966 (copyright 1965), p. 356.
QST, Jan 1966, p. 125.
QST, Jun 1966, p. 111. (specs and chart)
QST, Nov 1977, p. 117.
350B - intro date unknown, sold until 1979:
QST, Nov 1978, p. 193. (The 350D is the same as the 350B, but with digital display)
QST, Feb 1968, p. 115. (350C)
QST, Jun 1968, p. 109. (Discontinued in 1977)
QST, Nov 1977, p. 117. (350D, digital display) (A and D sold concurrently)
350B and 350D close out: QST, Aug 1979, p.126.
This ad references "16 years of continuous production totaling 55,000 radios." Doesn't say whether this number includes just the 350 series, or all of the tube type rigs.
The Swan 350 made its debut in late 1964 and continued to evolve for another 15 years. The original 350 covered 80 through 10 meters, operating on the sideband customary for a particular band. A kit was available to enable sideband selection. SSB power input was 400 watts, with 320 watts on CW, and 125 watts on AM. The Swan 350's VFO was transistorized and the transceiver also used 16 tubes, including a pair of 6HF5 finals.
