Note
Ham Radio, Apr 1977, pp. 68–69.
Advertised only once. There is no evidence of the SS-747 ever being sold, though at least one prototype is known to exist.
The Swan SS747 provides separate transmit and receive operation on individual bands through dual VFOs all in a single unit.
A 125 watt minimum output unit with selectable sideband, fully solid state construction, digital frequency readout, and 3.5- to-30 MHz capability.
A digital display reads either of the dual VFOs with a resolution of ±100Hz on six digits of seven segment LED'S.
Broadband tuning eliminates adjustments. The SS747will operate on any frequency throughout its range In 500 KHz steps (except IF guard band) with the addition of a frequency synthesizer or with additional crystals.
Select lower sideband, upper sideband, or CW with sidetone on all frequencies from 3.5 to 30 MHz (optional AM available).
Better than 0.5 mV at 10 db S + N/N ratio sensitivity and 300-3000 Hz audio response.
Other features include receiver incremental tuning; panel meter indicating relative power out and receiver signal strength; and infinite VSWR protection.
AII circuits are on plug-in printed circuit boards and an accessory like the noise blanker is added internally just by plugging into a board. For instance, a plug-inboard lets you use the counter as a piece of test equipment for checking external frequency sources up to 150 MHz with 100 Hz resolution.
Other features include: ALC mic gain, VOX, automatic self adjusting AGC, and CW drive control.
2.7 KHz IF bandwidth.
ACCESSORIES
AM (6 KHz bandwidth)
CW audio filter (selectable 80 or 110 HZ bandwidth plug-in board)
Noise blanker
External frequency synthesizer
10-position crystal oscillator
Frequency counter board
Power: 13.8 (nominal) VDC
Average 8 amp SSB transmit power drain, 750 ma receive.
PSU-I AC power supply