Note
QST, Apr 1962, p. 121. (6m only)
QST, Jun 1962, p. 108. (6m and 2 m)
QST, Jun 1965, p. 171.
73, May 1966, p. 41. (6-CD, but available before this date)
CQ, Jul 1966, p. 60.
QST, Apr 1963, back cover. (inside photo and some details)
Allied Radio catalog 1964 (copyright 1963), p. 225.
Allied Radio catalog 1965 (copyright 1964), p. 324.
The Poly-Comm PC6 and PC2 are single-band 50-MHz and 144 MHz transceivers manufactured by Polytronics Lab, Inc. of Clifton, New Jersey.
The units measure 5 by 11 by 10 inches, weighs 15 pounds, and features a built-in carrying handle that swings up into the top of the chassis. The front panel houses side-by-side tuning dials for the receiver and the transmitter VFO, a combined S-meter/tuning meter, a built-in speaker, a crystal socket, and controls for volume, squelch, noise limiter, receiver antenna trimmer, and transmitter tuning. Send-receive switching is controlled via a push-to-talk microphone.
The power supply uses silicon diode rectifiers and operates from either 115-volt AC or 12.6-volt DC sources. Voltage regulation for both the transmitter oscillator and receiver tunable oscillator is provided by separate pairs of series-connected NE86 neon bulbs. Power consumption on AC is 90 watts during reception and 140 watts during transmission; on 12.6-volt DC, current draw is 10 amperes on receive and 16 amperes on transmit.
Receiver Design
The receiver utilizes a double-conversion superheterodyne configuration:
Poly-Comm 6-CD
A slightly different version of the Poly-Comm 6 that at first glance, appears identical. Release date not certain but probably on the heals of the Poly-Comm 6 in 1962. The 6-CD is somehow complaint with the Office of Civil Defense order CD-1-100. See ad in CQ, July 1966, p. 60.
Tube Lineup (PC6) (15 total)
V1 6DS4 RF amp
V2 6CW4 RF amp
V3 6CW4 1st mixer
V4 12AT7 2nd mixer / crystal osc
V5 6BJ6 IF amp
V6 455 kHz IF amp / speech amp
V7 12AXY Audio amp / squelch
V8 6BQ5 Modulator / audio amp
V9 6BQ5 Modulator / audio amp
V10 6BJ6 Mic preamp
V11 6CB6 Tunable ocs 44.495–48.496 kHz
V12 6CB6 VFO
V13 12BY7 Tripler
V14 12BY7 Doubler
V15 7551 Final amp
References
Review (PC-6): QST, Apr 1963, p. 44.
