GRC-171

GRC-171 Transceiver Radio Set - A Medium Range UHF AM Transceiver Radio set built by Collins Radio Group/ Rockwell International, Cedar Rapids, Iowa. Used in ground radar stations for ground-air communications. Part of USAF Rivet Switch program in the 1970s to replace the aging vacuum tube technology radios with solid-state equipment. GRC-171 Transceiver Radio GRC-171 Transceiver Radio GRC-171 Transceiver Radio Element Value Notes Nomenclature GRC-171 Variants GRC-171(V)1. UHF AM transceiver. GRC-171(V)2 UHF AM/FM transceiver. GRC-171A(V)1 UHF AM transceiver. GRC-171A(V)2 UHF AM/FM transceiver. GRC-171A(V)4 UHF AM/FM transceiver. (compatible with Have Quick I). GRC-171B(V)4 UHF AM/FM transceiver. (Have Quick I/II). GRC-171C(V)4 UHF AM/FM transceiver. (Have Quick I only). GRC-171D(V)4 UHF AM/FM transceiver. Configured for non-ECCM operation only Manufacturer Collins Radio Group/ Rockwell International, Cedar Rapids, Iowa Type UHF AM Radio Transceiver IEEE Band UHF Frequency 225-399.975 MHz Channels 7,000 @ 25 kHz spacing Channel Spacing 25 kHz Technology All solid state Power Output 20-watt AM carrier Input Power 95 to 132 V ac; 189 to 264 V ac; 47 to 63 Hz; 380 to 420 Hz; single-phase. Introduced 1973 Production 10,752 est Final Cost $100,000 est each with all support equip Rivet Switch Radio Racks at Mill Valley AFS 1978. GRC-171 Transceiver in the upper left. GRC-171 Components (edit list) Component Model Quantity Height Width Deep Weight Notes Radio Set Control C-7999/GRC- 171 1 2.62 in 3.25 in 4.5 in 0.69 lb Radio Receiver-Transmitter RT980/GRC-171 1 8.72 in 19.00 in 19.20 in 74.5 lb See Also: US Radio Sets Sources: Winkler, David F., Searching the Skies: the Legacy of the United States Cold War Defense Radar Program, USAF Hq Air Combat Command, 1997, 192 pages, Pdf T.O. 31R2-2GRC171-2 Service And Circuit Diagrams Radio Set AN/GRC-171 pdf Links: Forecast International GRC-171(V) - Archived 7/2006