Note
QST, Jul 1977, p. 6.
QST, Sep 1977, back cover.
PLL synthesized.
100 channels (88 pre-programmed).
12 extra diode programmable channels.
Single knob channel selection.
LED digital frequency display.
Powered tone pad connection.
Receiver uses helical resonators.
TRANSMIT SECTION
RF Output Power: High: 10 watts, Low: 1 watt (approximately)
Modulation: Variable reactance frequency shift
Frequency Deviation: ±5 KHz
Spurious Radiation: Better than –60dB
Antenna Impedance: 50 Ohms
Tone pad input impedance: 600 Ohms
Microphone: Dynamic microphone with PTT switch, 500 ohms
RECEIVE SECTION
Receive System: double conversion superheterodyne
IF: 1st IF, 10.7 MHz; 2nd IF, 455 kHz
Sensitivity: better than 0.4 uV for 20dB quieting Better than 1 uV for 30dB S/N
Squelch sensitivity: better than 0.25 uV
Selectivity: 12kHz @ –6dB down; 40 kHz @ –70dB down
Image rejection: better than –70dB
Spurious interference: better than –60d8
Audio output: more than 1.5 watts across 8 ohms load, 10% distortion
Intermodulation: Better than 66dB
SEMICONDUCTORS:
Transistors, 41
FETS, 8
ICs, 7
Diodes, 35
Frequency Range: 146.01 to 147.99 MHz
Mode: FM
No. of Channels: 100
Operating Temperature: —20 to + 50 degrees C
POWER
Current drain: Less than 0.5A in receive with no input signal
Less than 3A in transmit
(HI) Less than 1.5A in transmit (LOW)
(at 13.8V DC)
Input voltage: 11.5 to 16.0V DC (13.8V DC nominal)
Grounding polarity: negative ground
Power supply is PS-6.