[aprssig] Whuich GPS for APRS ???

Scott Miller scott at opentrac.org
Tue Oct 20 01:07:48 EDT 2009

> If you want a newer unit, you can use a Garmin GPS with the FMI 
> interface to send GPS data to the radio. See 
> http://wiki.argentdata.com/index.php?title=Garmin_FMI for more 
> information on compatible units.

The rumor from Garmin is that by the end of the year there should be an 
update out for the nuvi 1200, 1300, and 1400 series that'll support 
waypoint display.  But NOT, presumably, using the same (legacy) protocol 
as the nuvi 350.

Beyond that, I know nothing of the new protocol and whether it'll really 
work for APRS, so I'm not making any promises.

I do have a 1300 sitting here ready to go the moment Garmin posts the 
new firmware.  Assuming they don't do anything stupid with it (like the 
FMI v2 protocol's use of undocumented file formats and inability to 
upload individual POIs), you can expect an update to the Tracker2 to 
support it within 48 hours.  (Maybe less.  Starbucks gift card 
contributions will tend to speed the process up.)

I'm holding off on a revised GTRANS cable until I'm sure the protocol 
will be usable.  The current boards should work with the newer units, 
but they need a resistor change and it could really use an extra ground 
connection for the power lead.  I also have to source 5v switching power 
supplies still.


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