[amsat-bb] Arissat-1 Voice telemetry analysis from G0SFJ

andy thomas andythomasmail at yahoo.co.uk
Wed Sep 21 07:03:54 PDT 2011

I have submitted for a tlm certificate my analysis of the voice telemetry from Arissat-1 on certain orbits in September (when I was present, hi).  
The dates of the receptions in September are in the analysis spreadsheet.

The MET is decreasing, I think this is because the satellite comes out of eclipse and swithches on nearer the observation, as the orbit is precessing

I think the analysis shows that as the MET decreases, the IHU temperature decreases, and the battery current increases (this is a lesser negative number).

Put that another way, as the MET in sunlight increases, the IHU temperature increases and the circuit current decreases (greater negative number).

However I don't know why the circuit reports a negative current, or even if the voice tlm is accurate. I'd be grateful for any comments.

73 de Andy G0SFJ


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