TheSpartan Packet Radio Experiment (SPRE) was anamateur radio communications experiment that flew on theSpace ShuttleEndeavour'sSTS-72 mission as part ofNASA's Spartan/OAST-Flyer spacecraft in January 1996.[1] The experiment was intended to test the tracking of satellites via amateur packet radio (Automatic Packet Reporting System), and was designed and built by theAmateur Radio Association at theUniversity of Maryland (W3EAX).[2][3] RequiredGPS data for the experiment was provided by another portion of the Spartan payload.[2] The operating mode wasFM,AFSK 1200baud packet radio, transmitted at 145.550 MHz.[4]
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