Flown Gemini 5 schematic for the Communications Digital Command System and Instrumentation Telemetry Control System, one page both sides, 17 x 10.5, signed and flight-certified in black felt tip, “This system page was flown aboard Gemini V, Charles Conrad, Jr.” The signed side of the schematic diagrams the communications flow through the DCS, which received digital commands transmitted from ground stations, decoded them, and transferred them to the appropriate spacecraft systems, including the computer and time reference system as shown in the lower left. The reverse is unsigned and diagrams the Instrumentation Telemetry Control System, mostly consisting of transmitters, power converters, multiplexers, and adapters. In fine condition. Accompanied by a photo of Conrad taken at the time of signing. The computer referenced in the diagram is especially significant, as the Gemini module was the very first astronaut-carrying spacecraft to include an onboard computer. It served as the heart of the spacecraft's guidance and control system and was essential to success, involved in ascent, orbital flight, rendezvous, and reentry. Pre-certified Zarelli Space Authentication.
Terms and abbreviations used in our descriptions.