[aprssig] Low power APRS digi that allows additional data

KA7O ka7o at ka7o.net
Sat Dec 11 22:15:25 CST 2010

Sounds to me like a task purpose created for a Kantronics KPC3+ in it's 
'low power' mode.

See the manual at the Kantronics site for details - and decide if it'll 
do what you want.

low power
has the analog and digital inputs you're after
proven reliability for remote sites.

On 12/11/2010 06:15 PM, Dale Mosby wrote:
> I help maintain a solar powered repeater in the Oregon coast range. This
> has 4 decent sized solar panels, 2 meter repeater and link radio to
> another repeater. Power is a concern as it is quite cloudy in the
> winter.
> I would like to put an APRS digipeater at the site. I have a crystal
> controlled 2 meter HT that I can use for the APRS radio. This one was
> chosen due to the low power draw. Intent is to fill in some APRS and
> also get data down from the site.
> I would like recommendations on a low power device to serve as the APRS
> digipeater. In addition to supporting APRS I would like to be able to
> send data out. Plan would be to use something like the Atmel AVR
> microprocessor to monitor some site data (light intensity, xmit on time,
> temp) and send that out periodically. Later I'll add some more weather
> data as time allows.
> I know the APRS spec as provision to send arbitrary data. What is
> somewhat unclear is if there is an off the shelf APRS digi unit that
> will allow a properly formatted input stream to be input from some other
> microprocessor tacked on.
> Any pointers or hardware suggestions appreciated.
> 73, Dale, K7FW
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