AN~PRC-77

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AN-PRC-77 Manpack.png

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
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)


Images

AN-PRC-77 Components.png

File:AN-PRC-77 Fron Panel.png

Additional Files

Adobe PDF icon.png TM 11-5820-667-12

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


Adobe PDF icon.png PRC-77 Interconnection Diagram

Adobe PDF icon.png PRC-77 Mechanism Exploded Views

Adobe PDF icon.png 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