Manned Space Flight Network: Unified S-Band Ground Station Equipment Photograph Lot

Seven official NASA photographs, sequentially numbered G-67-1757 through G-67-1807, documenting the equipment and technical-support areas of a Unified S-Band (USB) ground tracking station of the Manned Space Flight Network (MSFN) — the worldwide chain of stations, managed by Goddard, that tracked and communicated with the Gemini and Apollo spacecraft.

The photographs show technicians at the Klystron Power Monitor and Exciter Control panels, the Primary Power Control and Emergency Power Supply racks, oscilloscopes and frequency counters, reel-to-reel recorders, and a comms desk, with several men wearing headsets and one photographed mid-call on a corded handset. A shelf of reference binders visible in one frame is labeled “TDP” (Tracking Data Processor) and “APP” (Antenna Position Programmer), the two computer subsystems that positioned the station’s antenna and processed spacecraft tracking data.

No station name or signage appears in any of the seven photographs, so the specific MSFN site is not identified; the short sleeves, shorts, and open collars worn by the men photographed are consistent with (though not proof of) one of the network’s warmer-climate overseas stations.