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STS057-40-028 (21 June-1 July 1993) --- Astronaut Brian Duffy, pilot, talks to amateur radio operators on Earth from the flight deck of the Earth-orbiting Space Shuttle Endeavour. The space to Earth communications was part of the Shuttle amateur radio experiment (SAREX), which has been included on a number of Space Shuttle missions. Duffy, a licensed amateur radio operator using call letters N5WQW, was among crewmembers talking to students at various points on the ground.
