Note
QST, Jan 1972, p. 133.
Pearce-Simpson's Gladding 25 two meter FM transceiver had 6 crystal-controlled channels and ran 25 watts in the high-power position. It was solid-state except for a vacuum tube driver and final. The receiver used a slope-detector rather than the more conventional discriminator.
Crystals are factory-installed for: 146.34/94 and 94/94.
The solid-state receiver uses a FET front end and integrated-circuit IF strip and an 8-pole crystal filter. The transmitter is all solid state except for the driver and power output stages. Power output is 25 watts in the high position, 1 watt in the low position. Output is ±5 kHz phase modulation with automatic deviation limiting.
Harmonic and spurious emission is more than 60-dB down.
Receiver sensitivity is 0.5 uV.
Squelch is adjustable, 0.4 uV or less for 80% rated audio output.
Audio power output is 2 watts (10% distortion).
Receiver spurious rejection is 60 dB or greater.
Selectivity is ±7.5 kHz at 6 dB down; ±15 kHz maximum at 60 dB down.
Nominal supply voltage is 13.6 volts DC, negative ground.
Current drain on receive is 400 mA; standby, 1.2 amps; transmit, 10 amps.
An optional matching AC power supply is available.
References
Brief description. Ham Radio, Jun 1971, p. 71.