24 Volts power supply for transmitter-receiver MH-67 or MH-68, component of GRC-3 to 8 series – family of vehicular VHF radio communication equipment, used by all tactical echelons.
Used by the US military from early 1950s until late 1960s, designated PP-112/GR.
Used by the IDF during the Six Day War (1967).
Technology: vibrators and vacuum tubes rectifiers and voltage regulators.
