[aprssig] APRN (Automatic Picture Relay Network) revival?

Stephen H. Smith wa8lmf2 at aol.com
Sat Aug 8 21:41:53 CDT 2015


On 8/8/2015 3:06 PM, Robert Bruninga via aprssig wrote:
> Stephen,
>
> Thanks.  I think you answered most of what I was after.  That is, there are
> presently no tiny cameras with direct to digital transmission over RF, but you
> did remind me that the existing APRN concepts are probably still valid.
>
> That is, the transmission from the mobile robot camera may be SSTV (Greatest
> availabililty of cameras) , but as soon as it is received, then it is converted
> to a file and networked onward as needed in digital form.
>


I think Scott's analog SSTV cam board would be the perfect fit for this.   Wire 
it's FM-audio out to an FM transmitter and you are good to go. It's been flown 
on numerous balloons already.  The thing is about the size of a naked-board 
security cam.

The real issue would be what band and frequency to listen on.  I have had my 
APRN SSTV + APRS auto-receive operating on 446.0 in central Michigan 
(Lansing-East Lansing area) for the last three years, since I moved from SoCal. 


[The so-called national calling freq is so dead in central MI (or anywhere 
outside the south-eastern Detroit/Ann Arbor area) that I hear an average of one 
call every three or four weeks here.    I intentionally placed my Echolink node 
and the APRN gateway on 446.0 to try to scare up a little activity]

__________________________________________________________________

--

Stephen H. Smith    wa8lmf (at) aol.com
Skype:        WA8LMF
EchoLink:  Node #  14400  [Think bottom of the 2-meter band]
Home Page:          http://wa8lmf.net

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Long-Range APRS on 30 Meters HF
    <http://wa8lmf.net/aprs/HF_APRS_Notes.htm>





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