16479Re: [tracker2] GPS units that do not have duplicate waypoint issue?
- Apr 8, 2014On 4/6/2014 5:15 PM, Jason KG4WSV wrote:
> I thought when I used my (old) Garmin GPSMAP 60C with the tracker2,Hey Jason,
> 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,
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.
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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