Headset for tactical manual telephone switchboard MRK-22.
Used by the US military from the early 1960s until late 1980s; designated H-182/PT.
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).
