Vehicular mounting, part of MQ-106 radio set.
Used by the US military from early 1960s until mid 1980s, designated MT-3140/GRC-106.
Used by the IDF during the War of Attrition (1967-1970), the Yom Kippur War (1973) and the Peace for Galilee War (1982).
Manufactured by Tadiran, Israel, under license of General Dynamics, USA.