OSCAR 8 (also called AO-08, Phase 2D or Amsat P2D) is an American amateur radio satellite. It was developed and built by radio amateurs of the AMSAT and launched on March 5, 1978 as a secondary payload together with the Earth observation satellite Landsat 3 from Vandenberg Air Force Base, California, United States.
The satellite had two linear transponders, from the 2-meter band (uplink) to the 10-meter band and the 70-centimeter band (downlink).
Frequencies Transponder 1 Uplink (MHz): 145.850 - 145.900 Downlink (MHz): 29.400 - 29.500 Beacon (MHz): 29.402 Mode: SSB CW
Transponder 2 Uplink (MHz): 145.900 - 146.000 Downlink (MHz): 435.200 - 435.100 Beacon (MHz): 435.095 Mode: SSB CW
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