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SAREX (Shuttle Amateur Radio Experiment) has been carried on many flights of the US Space Shuttle (STS - Space Transportation System) since 1983. Typical operations involve 144/145 MHz NBFM voice or AFSK 1200-baud packet radio operations, or slow-scan TV. A number of frequencies in the 144-145 MHz band have been used. The radio is low-powered (ca. 1 watt) and uses antennas in a window or in the payload bay.

The first SAREX was operated by Owen Garriott, W5LFL, on STS-9, beginning 28 November 1983 (Spacelab mission).

"Well Done, W5LFL!", QST, February 1984, p. 11.
"W5LFL Makes Amateur Radio History", Bernie Glassmeyer, W9KDR, QST, February 1984, p. 79.
"Ham in Space", Sally O'Dell, KB1O, QST, February 1984, p. 79.
"Working the EasySats", Steve Ford, WB8IMY, QST, September 1992, p. 30.
"Amateur Radio Aboard Space Shuttles: T+10 Years and Counting", White, QST, November 1993, p. 22; December 1993, p. 93.

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