Rectangular aluminum box with electronics mounted inside. Blue front plate with eight switches and six connection ports, each labelled as to function. "Echo Canceller" and "COMSAT Laboratories" lettered on front plate. Ventilation openings on each side. Power connection port and wiring on rear. Created by Rebecca Hager Date Created 07/23/2021 Source Smithsonian National Air and Spa Keywords Commercial; Equipment; Satellites; Space Rights and Restrictions Not determined
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