Fox Telemetry Decoder Software Version 1.0

Version 1.0 of the Fox Telemetry Decoder software has been released, enabling setup, testing, and debugging of your Fox-1A ground station prior to the launch of the satellite. FoxTelem is used to demodulate, store and analyze telemetry data from AMSAT's Fox series of CubeSats.

Fox-1 satellites include two telemetry formats:

  • Slow Speed, also called Data Under Voice (DUV) is 200 bps FSK data  sent at the same time as the transponder audio. Whenever the transmitter is on, data is being sent. This happens during beacons and  during live QSOs.
  • High Speed is 9600 bps FSK sent instead of the transponder. This is  used for data intensive experiments such as the Virginia Tech Camera. This is only active when commanded from the ground. You can recognize  High Speed because it sounds like an old school computer modem.

FoxTelem will receive and store both formats assuming you can feed it audio that does not have the frequencies below 200 Hz filtered. For High Speed, the audio must also extend to include the full 9600bps bandwidth of the FM signal. For both modes this is best achieved from a Software Defined Radio or from the 9600 bps packet port of some radios. The FoxTelem User Guide provides more details.

FoxTelem is supplied as an archive file (.zip on windows, .dmg file on MacOs, .gzip on Linux).

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