![]() ![]() Each jack box had the capability to select the liason radio, command radio, compass radio or call other crew members.įrom our MAPS Airwaves Radio Corner member, Richard Willaman. A typical set-up consisted of a BC-347 amplifier unit and ten BC-366 Jack Boxes (one at each crew member’s station located throughout the plane). Interphone system was a complex intercom system on the plane which linked up all crew members (each with a headset and throat microphone).A typical unit used on the B-24 was the BC-357-B which operated at 75 mhz. Beacon radio was a very simple receiver used for instrument landing during adverse conditions such as fog.A typical compass receiver (used on the B24) was the BC-434A, part of the SCR-269-C installation. The compass receiver had a directional loop antenna and received long waves 100-550 kc as well medium waves 550-1500 kc. Compass radio was a receiver used by the navigator to fix the plane’s position via triangulation of two or more known ground based stations.Early in the war, similar looking equipment known as the ARC-5 command series was used. A typical setup would include two command transmitters and three command receivers. ![]()
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