[aprssig] Garmin NUVI & messaging?

Scott Miller scott at opentrac.org
Tue Feb 8 17:38:03 EST 2011

Sorry folks, I missed this thread until now.  The current situation is this:

The Tracker2 in all its versions supports the Garmin fleet management 
interface protocol.  Someone already posted the list of supported units. 
  The GTRANS cable will also translate to and from NMEA for the 
D700/D710 and (with the right pinout) the FTM-350 and other radios.

Waypoint creation was NOT originally part of the FMI spec.  It's a quirk 
that it happens to work (thanks to old code they forgot to remove) on 
the 350, and to a limited extent on some other old models - the 
limitation being that moving waypoints leave a trail.

With FMI 2.5 and above, waypoint creation is officially supported, and 
so is waypoint deletion, so the T2 and GTRANS can delete old waypoints. 
  The trouble is that the spec did NOT include anything about the user 
interface behavior, and (at least on the nuvi 1300 and 1490) received 
waypoints show up at inconsistent zoom levels, with a narrow range - 
maybe 2 or 3 zoom levels, it seems to be variable - and they don't show 
labels unless you touch them.

If Garmin gets this fixed, we'll be in good shape.  FMI 2.5 added not 
only deletion capability, but also categories, so everything the T2 or 
GTRANS creates is marked 'APRS' (again, the UI isn't working right on 
the nuvi side and this might not show up) and can be deleted separately.

Hope that clears things up...


On 2/2/2011 11:06 AM, mwbesemer at cox.net wrote:
> I'm 99.9999% sure that the only one that works properly is the Nuvi350.
> All the others have some sort of issues.
> Granted, they're getting long in the tooth, but my -350 works flawlessly
> and it gets me where I need to go to-boot... and they can still be found
> for around $100.
> Mike
> WM4B
> On Wed, Feb 2, 2011 at 2:01 PM, Stephen H. Smith wrote:
>> On 2/2/2011 9:44 AM, Keith VE7GDH wrote:
>>> Earl KD5XB wrote...
>>>> I wonder if this will work with the Garmin 465t -- do you know?
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