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16483Re: [tracker2] GPS units that do not have duplicate waypoint issue?

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  • Scott Miller
    Apr 8, 2014
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      In my experience the 60CS worked fine when used with Garmin protocol,
      but not NMEA.


      On 4/8/2014 4:36 AM, Barry Lankford wrote:
      > On 4/6/2014 5:15 PM, Jason KG4WSV wrote:
      > > I thought when I used my (old) Garmin GPSMAP 60C with the tracker2,
      > > they waypoints behaved correctly.
      > >
      > > I'm hacking out some software of my own that generates waypoints, and
      > > it seems a) multiple GPWPL sentences with the same name results is a
      > > waypoint trail, and b) this old unit doesn't speak PGRMW. I guess the
      > > good behavior I saw with the T2 was a result of Garmin binary mode?
      > > Or maybe I just don't remember correctly? (nah, couldn't be that....)
      > >
      > > Anyway, does anyone have suggestions for handheld (e.g.
      > > trail/hiking/etc style) mapping units that handle multiple waypoints
      > > correctly? Or units that have the problem so I know what to avoid?
      > > Ideally I'd like to use it with a T3, D7, xastir, my own software,
      > > etc.
      > >
      > > thanks,
      > > Jason
      > > kg4wsv
      > >
      > Hey Jason,
      > Your GPSMAP60C probably *did* work correctly -- once upon a time. You
      > probably fell victim to "unnecessary upgrade temptation." My GPSMAP76CS
      > (same firmware) still does work correctly because I didn't apply the
      > updated firmware that Garmin put out that 'broke' it (and I knew what you
      > meant by 'behaving correctly' when I read the first sentence). It was
      > several years ago, and may have even been the very last firmware update
      > that Garmin did for the GPSMAP60/76C(S) series that broke it. Seems like,
      > IIRC, the only thing that 'upgrade' did was fix some foreign language
      > thing, like maybe the handling of text for double-byte languages (I always
      > read the "what's new" part of the revision history, if one is provided).
      > I figured I would probably never need to use double-byte languages, and I
      > definitely preferred my waypoints to move rather than leave a trail, so I
      > let that one pass me by (and I don't think there were any more). I don't
      > recall what the 'last good update' was called (version number), and I don't
      > know if I still have a copy of the file for that version, but if you can
      > find it, you can almost certainly go back to the good one.
      > My GPSMAP76CS doesn't have batteries in it right now, and I'm not exactly
      > sure where the power/data cable is at the moment either, so I can't readily
      > power it up and read the version in the splash screen. But, maybe later
      > today I'll have a chance to try to do that.
      > Also, I think that version came out when I was using different computers
      > than I am now (and those old computers no longer work/exist), so I'm not
      > even sure I still have a copy of the 'good' firmware, but I'll try to look
      > around for that later, too.
      > I think I remember that there was a 3rd party GPS site that had several
      > versions of firmware for that series, but I can't think of the URL or even
      > a good search term to Google for it. Maybe it'll come to me later.
      > Barry
      > N4MSJ
      > PS, I thought the 60C/76C series *did* speak PGRMW. Are you certain it
      > doesn't? Also, Garmin released a specification for their proprietary
      > command/response protocol several years ago that surely provides greater
      > control than NMEA waypoint sentences do. You might even be able to specify
      > the symbol and delete waypoints that way.
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