Automatic or manual radio relay control box, used with VHF and UHF tactical Radios.
Deployed in airborne radio relays.
Used by the IDF during the War of Attrition (1967-1970), the Yom Kippur War (1973), the Peace for Galilee War (1982) and the Security Zone Conflict (1982-2000).
Manufactured by the Signal Corps Maintenance Depot.