[aprssig] Solar Powered Digi's.

[Andy AB9FX]

John,
our solar powered digi SR3DGT works with 60 Watts solar panel, what is more 
than we need. Even on short, dark winter days not any problem with the 
power. There are KPC3+, Kenwood TH-22, Ultimeter 2000, and cross-band 
repeater.
Some info, picture, telemetry, and wx charts at 
http://www.aprs.pl/gontyniec.htm
73
Andy SP3LYR


----- Original Message ----- 
From: "John Ronan" <jronan at tssg.org>
To: "TAPR APRS Mailing List" <aprssig at lists.tapr.org>
Sent: Tuesday, December 04, 2007 13:17
Subject: Re: [aprssig] Solar Powered Digi's.


>
> On 4 Dec 2007, at 18:53, Phillip B. Pacier wrote:
>
>> I had a solar powered digi up for five years (W7RBV-2).  I have  since 
>> transferred ownership of the digi and it is no longer solar  powered, but 
>> what what information are you looking for?
>>
> Typical "Rules of thumb" I guess for battery/panel sizing.
>
> I was thinking of a OT2 and maybe a FT-1500 or some other dedicated  2m 
> Radio.  The OT2 will also broadcast battery voltage as telemetry  for me.
>
> Its not something we've done before.. so avoiding any 'gotchas' would 
> help.
> Apparently, the 'average' Sun hours per day over here is about 3.75.   So 
> I was going to go for a rough figure of TX'ing 20% of the time,  and try 
> and size the battery so that it never gets discharged below  80% on that 
> figure.  And then I guess, size the panel so that it  could recharge the 
> battery from roughly 80% discharge on a 3.5 hour  day of sun.  Does that 
> sound reasonable?
>
> Regards
>
> John
>
>
>
>> 73
>> Phil - AD6NH
>> www.aprs2.net
>>
>> John Ronan wrote:
>>> Hi,
>>>
>>> I'm looking for 'rules of thumb' for solar powered digi's.  We've  been 
>>> offered a site for a digi, but power on it could be an  issue.  Any 
>>> experience appreciated.
>>>
>>> de John
>>> EI7IG
>>> -- 
>>> John Ronan <jronan at tssg.org>, +353-51-302938
>>> Telecommunications Software &  Systems Group,  http://www.tssg.org
>>>
>>>
>>>
>>>
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>>
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>
> --
> John Ronan <jronan at tssg.org>, +353-51-302938
> Telecommunications Software &  Systems Group,  http://www.tssg.org
>
>
>
>
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