Live tracking w/Garmin Nuvi

[LDWhite68]

After all these years of using TF, I finally decided to try using the live tracking feature. I'm running TF v. 5.13. The program is fine with talking to the Nuvi for "GPS transfer". But it gives "Error initializing COM port, check for other programs using port" when I try to start live tracking. Why would the COM port be OK for data transfer (both send and receive) in the one application but not the other? Does it have something to do with automatic data transfer vs. manual? Is the problem most likely with my TF version or COM port configuration or firmware on the GPS? I really need to get this working for some storm chasing applications.

[ScottMorris]

Hi there,

Let's see.  There are so many Nuvi models that it is hard to know exactly, but the mode used for live tracking is important.  Your GPS may or may not support one or both.  The two are NMEA and Garmin's PVT protocol.  TopoFusion supports both, but it won't look for both.  You'll need to try them both.  It's a matter of getting the unit into live tracking mode sometimes, as well, but often that is automatic.

So if you tried Garmin mode, try NMEA, or the other way around, and let me know how it goes.

Thanks!