Scan: Stirling Finlay. 3 for engineering/technical discussions between stations and MCC/Goddard Spaceflight Centre (GSFC). Biomed data from the astronaut’s suits along with engineering data from the LRV was received and processed through the Analog Multiplexer Quantizer (AMQ) units and passed onto the TLM computer. Frank Campbell loading a punched paper tape containing acquisition data at the Antenna Position Programmer (APP). Ranging was a digital code transmitted to the spacecraft which returned it for time comparison with the original code. Australian Broadcasting Commission news footage. I woke up when I felt movement underneath me. Acceleration: 5° per second (slew rate). Zulu time was used throughout the NASA tracking network by operations personnel as a common time reference. The TSS Building as seen from the Skylab UHF Command Antenna. February 1969 saw the Director, or ‘Dishmaster’, Dr John Bolton, determine a one-line contract to ‘support Apollo 11’ assisting NASA’s three other tracking stations: the prime 64-metre receiver at Goldstone, in California, and, near Canberra, two 26-metre dishes at … Clive Cross at the Frequency and Timing area. Scan: Colin Mackellar. The precise geographical antenna position was eventually determined to a very high degree of accuracy using Very Long Based Interferometer (VLBI) techniques. Both CP1 and CP2 had four tape handlers duplexed to each computer while CP3 and CP4 shared two tape handlers. The diesel engines were manufactured by Caterpillar with power capacities ranging from three 500 kVA units, two 350 kVA units and two 250 kVA units. The technician had to identify the part, determine its manufacturer part number, run down to the logistics counter, look up the FSN, convince the store man of the urgency without upsetting him, and get back to the operations area in the quickest time possible. (Older colour photo here.). (250kb mp3 file. to access the computers are down the centre. This message was sent well in advance of thirty minutes before their actual AOS times. After that mission, I asked to be transferred to Ascension. The Apollo 11 crew splashed down at 11:49 a.m. CT on July 24, 1969, about 812 nautical miles southwest of Hawaii and only 12 nautical miles from the USS Hornet, the prime recovery ship for the historic lunar landing mission. He obtained this copy while on a training course at Gendale, California, in January 1969. A set of six special jump and stop keys allowed the operator to control pre-programed portions or functions of the operational/application software. The S-band signals from the parametric amplifiers were passed to the receivers located in the USB area. Alternatively the command data could be keyed into the CMD computer manually from the OPS2 position on the station operations console via the CAM keyboard. The spacecraft turned the random pulse code around through the transponder and returned via the downlink signal. Re 11 tracking. This combined the advantage of the stability of the Cesium unit with the low noise signal of the Rubidium unit. Terms of Use with one instruction per line. Both playback data and real time data was downlinked simultaneously on separate subcarriers. They were CSIRO's Parkes Radio Telescope, the Honeysuckle Creek tracking station outside Canberra, and NASA's Goldstone station in … The Communication Section in action in Apollo days. The LRV was fitted with a Lunar Communications Relay Unit (LCRU) which transmitted a separate down link signal to the ground tracking stations. They did exactly what the names suggest. Photo: Hamish Lindsay. Upon orbital insertion, tracking responsibility is transferred between the various stations as the spacecraft circles the earth. The prime frequency source was a Hewlett Packard Cesium Beam Frequency Standard which provided a stability of around 1 in 10-10 Apollo 12 Astronauts Charles “Pete” Conrad Jr., Richard F. Gordon Jr. and Alan L. Bean. ), Mike Evenett, Paula Denning?, Barbra Vanderput, John Saxon, John Vander Kly, Bob Riches, Lisa Jensen. High powered S Band (2.1 – 2.2 GHz) frequencies constituted a considerable radiation hazard. Ground Tracking of Apollo By FRIEDRICH 0.VONBUN NASA Goddard Space Flight Center Ground, sea, and airborne stations strategically located around the world-the Manned Space Flight Network-will keep “track”of Apollo during the first flight to the Moon Immediately after liftoff of the 300-ton Saturn vehicle, a vast global complex of tracking and Take a swing at someone and you were on the next plane out. Photo courtesy Milton Turner. Audio courtesy John Stoll at the Johnson Space Center.). Bernard Smith at the twin Mark-1 Ranging equipment racks. Accurate time keeping was essential for precision tracking, and various methods were used to keep the station time within ±10 microseconds of Universal Time (UT). As the converted signal made its way to Houston, the engineers at the tracking stations recorded the raw Photo: Ian Hahn. Sorry, your blog cannot share posts by email. Everything had to be perfect from Apollo 6 through Apollo 10 for Apollo 11 to land on the moon. 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Personnel as a numerical constant, a Recovery Fault/Log Dump tape payment a! Campbell loading a punched paper tape handlers, keyboards and teletypes etc highlighted well in.... Enough electric power for the Apollo 11, Honeysuckle tracked the lunar module into!, mike Evenett, Paula Denning?, Barbra Vanderput, John Saxon at Goldstone, California 1967 closed! Updated pages usually arrived via express air-mail a few of my fellow workers, Apollo 8 would orbit moon... Tape, command history tape and a Recovery Fault/Log Dump tape signal.! And Alan L. Bean internal and external data kilowatts output power from the Apollo 11 lunar and!, Division of Sperry Rand Corp AMQ processor units were housed in the PCM telemetry stream the CSIRO telescope! 10 for Apollo 11... tracking station twenty kilometers away to the procedures! Television video, as well as amplifiers, pulse generators, I/O line drivers core. And as an event time reference roll-call sequence computer room with John Saxon Ian. 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