MIL-B-85130, MILITARY SPECIFICATION: BEACON, UNDERWATER ACOUSTIC AIRCRAFT, GENERAL SPECIFICATION FOR (27 NOV 1979) [NO S/S DOCUMENT]

MIL-B-85130, MILITARY SPECIFICATION: BEACON, UNDERWATER ACOUSTIC AIRCRAFT, GENERAL SPECIFICATION FOR (27 NOV 1979) [NO S/S DOCUMENT]., This specification covers the performance and interface requirements of underwater acoustic beacons used to locate aircraft or other items underwater. The beacon is mounted on the item to be located. Acoustic beacons emit pulses of sound which are detected with underwater receiving equipment.