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[aprssig] Solar Powered Digi's.

Scott Miller scott at opentrac.org
Tue Dec 4 19:53:11 UTC 2007


What's the power consumption of the U2000?  One thing I have to say for 
the AAG 1-wire station is that it draws VERY little power.

Scott
N1VG

Andy AB9FX wrote:
> 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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> 
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