[aprssig] 9600 Baud Packet Network?

Jason KG4WSV kg4wsv at gmail.com
Sun Jun 12 13:15:31 CDT 2016


On Sun, Jun 12, 2016 at 12:49 PM, Andrew Rich via aprssig <aprssig at tapr.org>
wrote:

> 19k2 is there – the modules are $40
>
>

Or an Xbee pro 900HP that can do 200k at 4 miles or 10k at 9 miles with a
dipole.  It'll do 40+ miles with a gain antenna.  $40 plus antenna.  Only
250mW but pretty effective.

They also have mesh network models that could be good for building
temporary networks for events (races, etc) where 144.390 coverage is
inadequate, although I haven't looked at the mesh networking myself.

I'm testing a tracker on the bench right now that speaks APRS over Xbee.  I
expect it to last 3 to 5 days beaconing every 3s on a single CR123A.  The
old version that just transmitted 2 NMEA sentences at 1Hz lasted > 24 hours.

Still have some things to figure out with the xbee addressing to work out
multiple receivers, and to see how many trackers I can timeslot onto a
single channel.

The beagle bone black to digipeat this onto 2m so I can keep using my
Kenwood ARPS rigs is nearly done, too.

-Jason
kg4wsv
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