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Duplex Filter 85

Passive RF Diplexer for radio-telephone links, connecting MH-2 transmitter and MH-3 receiver to a single AN-200 three elements Yagi antenna.
Used by the IDF during the Sinai Campaign (1956), the Six Day War (1967) and the Yom Kippur War (1973).
Used for Radio-Telephone communications links to a distance of up to 40 Km (Line of Sight), carrying multiple voice channels.
Frequency ranges 76.0 to 92.5 and 87.5 to 95.0 MHz.