NATO Stock Number
5820-01-269-8009
Sold in multiples of
1 EA
DEMIL
DEMIL/MLI
End Application
An/grc-221 protection
Criticality Code Justification
Nhcf
Functional Description
Controls selection of either uhf-1 or uhf-2 located inside of shielded room
Nuclear Hardness Critical Feature
Hardened
Reference Data And Literature
T.O.31r2-2grc22
Supplementary Features
Ground radio communication, warning an/grc-221, hereinafter referred toas the grc system, enables control of aircraft alert forces effective in a high altitude electromagnetic pulse (hemp) environment. The grc system provides hemp protection of communication terminals, uninterruptible power, environmental control, and klaxons at each base alert facility. The system consists of shielding enclosure s-687/grc-22 (shield room) ; the control, radio set is a line replacement unit.
