Apollo Command Module Unified S-Band Omni Directional Antenna element manufactured by Amecom Div. Litton Systems, Inc., measuring approximately 4″ tall and 3″ in diameter, labeled “Antenna, S-Band Omni, NAA/S8ID Control Number, ME481-0048-0001, Contract No. NAS9-150, Mfg. Ser. No. 10037PRO1016, Mfg. Part No. 4422S Date 7-20-66.” In fine condition, with some soiling and tarnishing to the metal. One of four omni directional antennas integrated into the exterior of the Apollo Command module. The right-hand polarized helical low gain omni-directional antennas supplemented the single Service Module high gain S-Band antenna array as part of the spacecraft’s telecommunications system. Each was flush mounted at 90-degree increments around the lower perimeter of the Command Module and transmitted and received uplink/downlink voice, telemetry and data from the Command Module to the Manned Space Flight Center as well as between the Command Module and the Lunar Module.
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