Problem with GPS

[Guest]

I have a Garmin GPS III+. Last time I was on Red, I marked the bridge, then we headed west. Suddenly the bridge I marked 300 yards behind us is showing up 1 mile in front of us. This has happened a couple times before as well.

Anyone had this thing happen to them. I had the unit out of the truck or I was walking in unobstructed areas. What is up with that?? CR.

[smallies24]

At times a GPS can become kind of disoriented for a little bit. For example, if you wre facing the bridge when you entered the way point and then turned and walked awy from it, the GPS may read it backwards for a little while. I've had this happen on Mille Lacs. But that still wouldn't explain why it said tyhe bridge was a mile way. The only thing I can think of is prehaps it was giving you the distance to another waypoint (proximity waypoint). Could that be it, just my 2 cents.

[Guest]

GPS's never lie, you must have crossed back over the bridge and got circled around and were heading back at the bridge

What do you think Duck? Could it happen? Sorry Crappie Rage but I had to! Kind of an inside story.HEHE ScottS

[Surface Tension]

Didnt jigglestick get lost in some kind of Red lake Triangle out there too?

[Russ&Judy]

ya just ask Jiggie stick and Bobbers up--sat night--4miles west 6 miles north and no bridge,then it was everyone for them selves to find the bridge and shore, all the time we drove around we were only around 500yards from our fish house to the bridge, we went were no man should go. talk about yaking in our truck from the ladies about ,lost, getting hung up and stuck, we were lucky we didnt run out of gas following then two.

[fish_on_llc]

Hey folks my literature and researchj on the GPSIII+ say they are automatically programmed with a declinational margin of error. Apparently for prevention of ill-use (to use in a weapon as a guidance system). You can punch in a waypoint and then return later show that you're in the right spot and be 3ft to 300 yds away. To jump from 300 yds to a mile seems a little extreme though. Just my .02 worth! I'll be back april 6 for round two, but this time I'm going out of WW as the south side seems awfully slow. Thanks again for all the tips before we went up the first time! Good Luck!

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Jeff Phelan
Fish On LLC
[email protected]

[jigglestick]

I WASN'T LOST!!!by the way, russ did you notice all those fish houses shaped like tipi's before we turned around?

[Big-Al]

CrappieRage-

Don't have much of an explanation for you. Have used a III+ for a couple of years and have not had anything like that happen. Did you have "go to" initiated or a "route"? Did you have it programmed for north up or route up? This can mess you up sometimes. As long as you didn't lose the sat's (which can happen, although usually pretty good coverage on the dash) should show you a relatively accurate position.

fish_on_llc-

Declinational margin of error?? Can't say as I have ever heard of that one. Declination would have nothing to do with position accuracy. Selective availability may be what you are referring to. But that was turned off a couple of years ago. Before that if someone told you they could return to the same rock each and every time they were crazy. Now you can return within 30' feet or so most of the time, even with a cheap unit. You can sometimes get much closer, depending on satellite geometry, and the unit being used.

[This message has been edited by Big-Al (edited 03-27-2002).]

[Russ&Judy]

Ill wish Inspector Gadget would help us out, hes the one to ask, Gadget where art thou?