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August 1954. Eight-panel patching bay at CBS Television City in Los Angeles, for assignment of any of eight telecine film chains (slide or movie projector and TV camera) to any of several control rooms, for insertion of film content into video feed. One television camera is used with each of three Eastman 16 mm projectors, three RCA 35 mm projectors and two Gray "Telop" projectors. Multipin cable plugs contain two audio and video outputs, start-stop circuits and intercom and monitoring circuits. View full size. Ektachrome by Peter Samerjan.