[amsat-bb] Re: AO-7 is not OK

Jari Koivurinne jari.koivurinne at aina.net
Wed Apr 14 10:56:40 PDT 2010

> Hi Piraja,
> Yes, I made similar observations. If the CW is active on 70cm you can hear
> sometimes a very strong deviation in frequency.
> The CW beacon partly not decodable. I agree with you it could be an effect
> by low batteries or due heavy usage.
> See some graphs here: http://www.dk3wn.info/p/?cat=21
> 73, Mike

Hi gang!

There is no battery left in AO-7. All the current is generated by solar
panels and the only "power buffer" is the capacitors in the regulator board.
This may cause the voltage drop that also affects to output power and
shifts oscillators. The solar panels are quite old too...

Jari oh3uw

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