Part of armored vehicles intercommunications system.
During secure transmission in transceiver 1, disconnects audio from ‘All’ channel and injects noise, generated in TH-175, to transceiver 2 microphone input.
Used by the IDF during the Peace for Galilee War (1982), the Security Zone Conflict (1982-2000) and the Second Lebanon War (2006).
Manufactured by Signal Corps Maintenance Depot.
