[aprssig] Solar Powered Digi's.
ab9fx at aprs.pl
Tue Dec 4 13:39:47 CST 2007
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
Some info, picture, telemetry, and wx charts at
----- 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
> 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?
>> Phil - AD6NH
>> John Ronan wrote:
>>> 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
>>> John Ronan <jronan at tssg.org>, +353-51-302938
>>> Telecommunications Software & Systems Group, http://www.tssg.org
>>> aprssig mailing list
>>> aprssig at lists.tapr.org
>> aprssig mailing list
>> aprssig at lists.tapr.org
> John Ronan <jronan at tssg.org>, +353-51-302938
> Telecommunications Software & Systems Group, http://www.tssg.org
> aprssig mailing list
> aprssig at lists.tapr.org
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