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

ps8rf Piraja ps8rf at hotmail.com
Wed Apr 14 15:43:37 PDT 2010

Hello friends,

Some friends wrote that the batteries of the AO-7 will not work. However when analyzing the data made available by Mike in your web site I saw that the results of telemetry for the voltage of the batteries and its load are different in each decoding ...

I am convinced that the AO-7 is not in Mode C and would make an appeal to all users of the "Grand Old Girl" using only QRP until your ready reestablishment.

Thank you all for answers and guidance.


Piraja, PS8RF 

" Nobody is born knowing "

The Amateur Radio is supportive and helpful in any circumstance.

> From: jari.koivurinne at aina.net
> To: mail at mike-rupprecht.de; ps8rf at hotmail.com; amsat-bb at amsat.org
> Subject: RE: [amsat-bb] Re: AO-7 is not OK
> Date: Wed, 14 Apr 2010 17:56:40 +0000
> >
> >
> > 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
> > DK3WN
> >
> 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...
> 73,
> Jari oh3uw
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