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Aviation History
1954
1954 - 1652.PDF
4 JUNE 1954 FLIGHT 19 Aircraft Intercommunication Marconi Equipment Type AD 401 provides... # intercommunication between up to ten positions in the aircraft and connection of mic/tel handsets for ground servicing crews. Connection for nine services: four transmitter/receivers and five receivers or navigational aids. Simultaneous mixing of four channels each having its own volume control: intercommunication plus three selected services. Features... Self-contained power unit housed in amplifier unit. Detachable chassis arrangement and robust construction for ease in servicing. Lamp signalling between all station boxes. Emergency override facilities. MARCONI Airport and Airborne Radio Systems MARCONI'S WIRELESS TELEGRAPH CO. LTD. CHELMSFORD ESSEX LA3
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