Downloaded from https://www.everyspec.com MIL-STD-1808C w/CHANGE 1 SYSTEM SUB-SYSTEM TITLE DEFINITION 48 COMMUNICATION NAVIGATION/IDEN- TIFICATION (CNI) Those subsystem components that furnish a means of communication within the aircraft, and between the aircraft, other aircraft, ground stations, and ground crew, for navigation, and emergency location signals. Includes voice, data continuous wave communicating components, intercom, tape recorder-record player, and emergency signal transmitters. This system includes integrated CNI systems. 00 GENERAL 10 ANTENNAS/APER- TURES/ARRAYS The portion of the system used for transmission and reception of signals.
Includes antennas, apertures, arrays, antenna couplers, transmission lines, etc. 20 PROCESSING AND INTEGRATION The portion of the system used for navigation and emergency transmission, communication with ground crew, between aircraft, between flight crew personnel, and with ground stations. Includes encryption devices, decoders, processors, transmitters, receivers, amplifiers, power supplies, recorders, etc. 30 CONTROLS/DIS- PLAYS The portion of the system that provides control and display of CNI functions. Includes function selection devices, node selection, signal power levels, control panels, frequency control and display, signal volume, etc. 57