[amsat-bb] PSAT Telemetry

Robert Bruninga 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

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