[amsat-bb] PSAT Telemetry
bruninga at usna.edu
Wed May 20 19:39:15 UTC 2015
When PSAT is in SAFE mode, the callsign is PSAT-1 and TOCALL is APOFF.
The decode of PSAT-1 telemetry is as follows:
038 Means 38th (1 minute) packet.
886 means 8.86 volts (8.4V is full charge)
079 means 79 mA system current
625 is +Z temp
744 is -Z temp
788 is Battery temp
Decreasing Temperature counts mean warmer temps. Calibration for +Z/-Z are
same, but for Battery is different.
3 minutes later +Z/-Z are still warming and at greater rate than internal
For +/- Z, Count of 600 is about 30C. Count of 800 is about 0C.
For Battery, count 700 is about 30C. Count of 840 is about 0C.
Again, this second count-down to BURN is a second attempt to burn in case
the first one failed. But since we hear it, then the antenna burn was
successful and we need no more burn attempts.
Fm PSAT-1 To APOFF Via ARISS <UI pid=F0 Len=12 >[14:37:04]
Burn in 308
More information about the AMSAT-BB