[amsat-bb] PSAT Telemetry

[Robert Bruninga]

When PSAT is in SAFE mode, the callsign is PSAT-1 and TOCALL is APOFF.

The decode of PSAT-1 telemetry is as follows:



T#038,886,079,625,744,788,00011100



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.



T#041,875,075,619,718,785,00011100



3 minutes later +Z/-Z are still warming and at greater rate than internal
battery.



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.



Bob, WB4APR



Fm PSAT-1 To APOFF Via ARISS <UI pid=F0 Len=12 >[14:37:04]

Burn in 308