Complete Space Shuttle Crew Remote Communication Kit, featuring three headsets, three communications modules, and one audio interface unit. This type of kit had an encryption feature so that communication among Shuttle astronauts would remain private, in addition to different frequency knobs; these units now have jumper circuit cards where the voice encryption circuit cards would have been installed for classified missions. Two of the communications modules have labels on the side, "Crew Remote Unit, P/N 02-1388200," with no serial numbers specified; the third unit lacks a label. The audio interface unit is labeled: "Audio Interface Unit, S/N SED16102305." Each of the headsets is labeled with part numbers on the cables. In overall very good to fine condition.
