RT-841

RT-841 is the base component VHF radio transceiver used by the United States Military in manpack and vehicular radio configurations, including the PRC-77 (manpack) and the GRC-160[?] (vehicular). These radio systems were employed in the US Army and US Marine Corps from the Vietnam Era[?] to present.
A follow-on radio system and ultimate replacement for this transceiver is the SINCGARS.