Scott Miller wrote: > That's right. Works very well. > > Scott > Scott,
I'm confused about how this works. As I read the info in the Garmin blog link given in the original post, you can only use the $PGRMW sentence to update the altitude, symbol and comment of an already existing waypoint. Unless I've missed something, it does not say you can update the latitude and longitude, and the Garmin proprietary NMEA document seems to confirm that. So, how can you "move" an existing waypoints with the $PGRMW sentence without creating duplicates? Also, unless you can use the $PGRMW sentence to create new waypoints as well as update existing ones, that would seem to indicate that to use the $PGRMW sentence in a tracker would require you to maintain a list of already created waypoints in the tracker's memory (so you'd know whether to send an initial $GPWPL or a modifying $PGRMW), and I doubt even recent trackers have that much memory to spare. So, how does that work? Is the lat/long update capability only available with the Oregon and Colorado series? I have a vague recollection that the $PGRMW sentence may have been extended to include lat and long in those units, but I haven't been able to locate any posts on any of the forums I read, or any Garmin documents, to confirm that. Barry N4MSJ > Edward wrote: >> >> >> Is it true that you wont get the duplicate waypoints? >> >> --- In [email protected], >> Scott Miller <sc...@...> wrote: >> > >> > I think the Garmin blog covers most of it. $PGRMW support has been >> > there in the Tracker2 since slightly before Garmin rolled out the >> > firmware update. You'll need to buy one of their serial interface >> > cables, unless you want to build your own with a voltage regulator and >> > level shifter. >> > >> > Scott >> > >> > Edward wrote: >> > > >> > > >> > > I saw this recently on the Garmin website and don't know quite what to >> > > make of it. They seem to say they have APRS compatible units. I >> searched >> > > the forum but didn't see any mention of it. >> > > >> > > http://garmin.blogs.com/softwareupdates/2009/06/index.html >> <http://garmin.blogs.com/softwareupdates/2009/06/index.html> >> > > <http://garmin.blogs.com/softwareupdates/2009/06/index.html >> <http://garmin.blogs.com/softwareupdates/2009/06/index.html>> >> > > >> > > Ed >> > > KE7MWY >> > > >> > > >> >
