Downloaded from https://www.everyspec.com MIL-STD-1808B SYSTEM SUB-SYSTEM TITLE DEFINITION 43 COMMUNICATION: STAFF Those subsystem components that furnish the staff a means of communicating within the aircraft, between the aircraft and other aircraft, and between the aircraft and ground stations. Includes voice and Continuous Wave (CW) communicating components, passenger address system, intercom, and tape recorder-record player. 00 GENERAL 10 ULTRA/SUPER/ EXTREMELY HIGH FREQUENCY (UHF/SHF/EHF) The portion of the system using UHF/SHF/EHF carriers. Includes transmitters, receivers, control panels, encryption devices, selcal decoder, antennas, etc.
20 VERY HIGH FREQUENCY (VHF) The portion of the system using VHF carriers. Includes transmitters, receivers, control panels, encryption devices, selcal decoder, antennas, etc. 30 HIGH FREQUENCY (HF) The portion of the system using HF carriers. Includes transmitters, receivers, power supply, encryption devices, control panels, antennas, antenna couplers, etc. 40 LOW/VERY LOW FREQUENCY (LF/VLF) The portion of the system using LF/VLF carriers. Includes transmitters, receivers, power supply, control panels, encryption devices, antennas, antenna coupler, etc.
50 AUDIO INTEGRATING The portion of the system that controls the output of the communications and navigation receivers to the staff’s headphones and speakers, and the output of the staff’s microphones to the communications transmitters. Includes audio selector control panel, microphones, headphones, loudspeakers, etc. 60 DIGITAL The portion of the system using CW for aircraft to aircraft or aircraft to ground station communication. Includes teletypewriters, modems, keyers, encryption devices, etc. 70 MULTIPLEX AND AUDIO SWITCHING The portion of the system using telephone communications between aircraft or ground stations. Includes telephones and multiplexing equipment.
80 PASSENGER AD- DRESS/INTERPHONE The portion of the system used to communicate between areas of the aircraft. Includes amplifiers, speakers, handsets, control panels, audio, video, and film equipment. Does not include the interphone system within the flight compartment (see 43-50, AUDIO INTEGRATING) 90 SATELLITE COMMUNICATIONS The portion of the system used for aircraft to satellite communications. Includes receivers, transmitters, encryption devices, modems, amplifiers, etc. 49