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[aprssig] Message reject behavior

Jason Winningham jdw at eng.uah.edu
Mon Mar 20 17:36:23 UTC 2006


On Mar 20, 2006, at 11:24 AM, <scott at opentrac.org> wrote:

> Well, as far as I know nothing besides the Tracker2 does commands over 
> APRS
> messages.

The WhereAVR does.  It's not a production item, but I think Gary 
provides all the info you need if you want to build one:

http://www.knology.net/~gdion/whereavr.html

I was along for the flight when a TH-D7 was used to issue the release 
command to a balloon at 80k feet, while we were traveling at 
undisclosed speeds chasing the balloon.

http://www.knology.net/~gdion/Buzz-O-Matic.html

> The whole point being that you can control the device remotely
> via Igates, unlike a KPC-3 where you need a connected mode link.

... and connected mode is easily a disaster on a balloon.  Datagrams 
are _much_ more appropriate.

-Jason
kg4wsv





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