AN~PRC-77
Purpose and Use
Radio Set AN/PRC-77 is a man-pack, portable, frequency-modulated (fm) receiver-transmitter used to provide short-range, two-way, radio-telephone voice communication. Receiver-Transmitter, Radio RT-841/PRC-77 is also used as part of Radio Sets, AN/VRC-64 and AN/GRC-160 (TM 11-5820-498-12).
Technical Characteristics
- Frequency range
- Low band
- 30.00 to 52.95 MHz ±3.5 kHz.
- High band
- 53.00 to 75.95 MHz ±3.5 kHz.
- Number of channels
- 920
- Channel spacing
- 50 kHz
- Types of transmission and reception
- Transmission . . . .
- Voice (300 to 3,500 Hz) and 150 Hz squelch tone
- Reception . . . . . .
- Voice (no squelch) or voice and 150 Hz squelch tone
- Security or digital data equipment
- Wideband (10 to 20,000 Hz) without 150 Hz squelch tone
- Transmission and reception
- power requirements:
- Transmission
- 12.5 to 15 vdc,780 ma average
- Reception
- 12.5 to 115vdc, 60MA average
- Transmission
- Type of modulation
- Frequency.
- Transmitter output power
- 1.0 to 4.0 W
- Type of squelch
- Tone operated by 150 Hz signal
- Distance range
- 5 mi (8 km) (varies with conditions)
Additional Files
- OPERATOR’S AND ORGANIZATIONAL MAINTENANCE MANUAL
- RADIO SET
- AN/PRC-77 (NSN 5820-00-930-3724)
- (Including Receiver-Transmitter, Radio RT-841 /PRC-77) (NSN 5820-00-930-3725)
- 1 January 1987
PRC-77 Interconnection Diagram
PRC-77 Mechanism Exploded Views
EMP Hardening Investigation of the PRC-77 Radio Set
- J.S. Seregelyi, C. Gardener, J.A. Walsh and R. Apps
- Defence Research Establishment Ottowa
- February 1993