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[aprssig] SSID for RF only Station with backup power

Stephen H. Smith wa8lmf2 at aol.com
Mon Apr 9 21:16:34 UTC 2007


kc5zrq at gmail.com wrote:
> This week I'll be installing a larger battery backup system at my 
> Digipeater/Internet Gateway/Telpac Gateway site.  It's not really 
> designed to power the system for an extended period.  It has two 12V 
> 95Ah batteries, but it will be powering a computer, two radios and the 
> wireless network sytem.  My guess is that it will run for an hour or 
> so before losing power. In that time period, if we decide the station 
> is important enough, then we have a small gasoline generator we can 
> carry to the site.
>
190 Ah can only power this for an hour??   What are you using -- vacuum 
tube radios??    Take a look at my ham server at:

     < http://wa8lmf.net/EPIAserver >   

I am powering a PC, two TNCs, and three transceivers (a TS-50, a VHF 
monobander and a UHF monobander), a Linksys router and a cable modem  on 
a total of 7.5 AMPs at 12.6 VDC.  The computer's monitor is a Samsung 
192MP 19" flat panel with a built-in TV tuner that also runs directly 
from 12VDC. Normally it is off, but when turned on it only adds about 
1.5A to the drain. 

With you battery setup and only 50% discharging the batteries, my setup 
would run for at least half a day or more. 




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