Note
QST, Mar 1967, p. 125.
500C
QST, Feb 1968, p. 115
500CX
QST, Apr 1970, p. 137.
QST, Feb 1971, pp. 102–103. (Specifications)
QST, Oct 1972, p. 144.
QST, Jul 1973, p. 146.
The 500 transceiver was the top of the Swan line when it was introduced in 1967. It offered selectable sidebands, a crystal calibrator, an automatic noise limiter, provision for an internal speaker, and a factory-installed socket for the 410 remote VFO. Power input was 480 watts PEP on SS8, 360 watts CW, and 125 watts AM. It also featured complete coverage of the 80-10 rneter bands.
Using a pair of 6L06 tubes in its final, the Swan 500C transceiver was conservatively rated at 520 watts PEP. The transceiver used 17 tubes, 3 transistors, and 10 diodes. With the addition of Swan's VX-2 accessory, it had VOX operation on phone and semi-break-in on CW; $520.00.
The Swan 500CX was a 550 watt, five-band transceiver. Its receiver was single conversion, but the 5.5 MHz IF prevented image problems. Changes from the 500C model included improved AGC and product-detector circuits, and a crystal calibrator with both 25 and 100 kHz markers. The optional SS-168 IF crystal filter was also available. $549.00.
