Telemetry

Final data downlink details are yet to be hammered out. The following information may change slightly as we get closer to launch.

  • Downlink Frequency - 433.920MHz
  • Power - 10 mW radiated through a 300-ohm twinlead J-pole tuned to VSWR <1.6 at downlink frequency
  • AX.25 packet transmission every 10 seconds
  • Telemetry string format
    • <GPS NMEA GPGGA string>:<T1>,<T2>,<T3>,<T4>,<P>
    • Temperatures will be pure ADC values between 0-1023 (conversion details will be posted)
    • pressure value will be presented as pressure in Pascals directly