Note
QST, Feb 1971, p. 106. ("coming soon")
QST, Apr 1971, p. 115.
QST, Jun 1971, p. 111. (Detailed specs)
QST, Jan 1973, p. 109. (The 600RC is advertised as a "custom receiver." )
QST, Jul 1973, p. 147.
QST, Feb 1975, p. 109.
Matches the Swan 600T.
The "Swan Twins."
Swan’s 600-R was the matching receiver for the 600-T transmitter.
Its hybrid design used 7 tubes, 8 transistors, and 12 diodes. The 600-R and 600-T could be cabled together for transceiver operation, using either VFO.