Parry Sound = Bermuda triangle? - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 6 Old 08-20-2007, 04:29 PM Thread Starter
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Parry Sound = Bermuda triangle?

Thought I'd ask this of my fellow Strommers and cagers who have GPSs. A little anomoly around Parry Sound and can't figure out why.

I go up to PS frequently in summer to get my daughter who works at a Leadership Camp near Nobel. On at least 10 occasions over last few years, and always consistently, on 69/400 in an area approx 30k and extending to about 225/23 k south of PS, my GPS recalculates it's route, denotes as taking me offroad, then, around McDougall Road in PS, re-calculates and put's itself right each time.

Last weekend, I tried it with another GPS, an older Lowrance I have, same thing (without the re-mapping, it just kind of hiccupped).

Both GPS sit on dash, in plain view. Even tried the GARMIN 60Cx with an external antenna - same thing. Same result happened with a borrowed GPS76 CSX, with and without antenna.

Anybody ever run into the same thing? I'm starting to think I should file a flight plan before I go up there again.

Bob

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post #2 of 6 Old 08-20-2007, 05:50 PM
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I have no knowlege of the area, but suspect that the Navteq data base has a road with a very small break in it or some data point(s) missing.

You may be able to zoom in and see a break in the road.

Then again I may be wrong.
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post #3 of 6 Old 08-20-2007, 06:11 PM
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I agree, probably a mapping issue. I have a spot near my in-laws in Quebec where it insists that I take a hard turn up the Gatineau escarpment. Essentially a cliff. I finally figured out there was an old road there years ago. It's still in the mapping database even though it's long grown over.
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post #4 of 6 Old 08-20-2007, 06:21 PM
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Is this while actually on 400? Can you upload the track you took? If you were getting a messed up signal the track should show it.

I am looking around my MapSource for that area and don't see a break on 400 or 69. There is a transition for the two highways.. is it possible the GPS's are set to avoid Highways? (I doubt it if they all did the same thing.)

Another possibility is that the maps have got the highway slightly wrong so they think you have gone offroad. It might help to have the GPS units set to "Lock On Road" if they aren't already.

The government also has the ability to Jam GPS signals. They did it last year or the year before briefly around Ottawa area to test the ability. if they were doing that they would let pilots know on the Nav Canada web site at:

http://www.flightplanning.navcanada....n&TypeDoc=html

..Tom

PS: There is also a break in the roads if you use the City Navigator North America V8 on Garmin City Navigator North America V8 that isn't on Metroguide Canada V4. If you want to go north through Peterson Road the GPS will try and route you around it. (You can see the gap where Elephant Lake Road (CR10) ends and it doesn't quite connect with Peterson Road)

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post #5 of 6 Old 08-20-2007, 09:33 PM
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Quote:
Originally Posted by rhbell View Post
Thought I'd ask this of my fellow Strommers and cagers who have GPSs. A little anomoly around Parry Sound and can't figure out why.

I go up to PS frequently in summer to get my daughter who works at a Leadership Camp near Nobel. On at least 10 occasions over last few years, and always consistently, on 69/400 in an area approx 30k and extending to about 225/23 k south of PS, my GPS recalculates it's route, denotes as taking me offroad, then, around McDougall Road in PS, re-calculates and put's itself right each time.

Last weekend, I tried it with another GPS, an older Lowrance I have, same thing (without the re-mapping, it just kind of hiccupped).

Both GPS sit on dash, in plain view. Even tried the GARMIN 60Cx with an external antenna - same thing. Same result happened with a borrowed GPS76 CSX, with and without antenna.

Anybody ever run into the same thing? I'm starting to think I should file a flight plan before I go up there again.

Bob
The newer 400 section just south of Parry Sound is west of the old section. Do you have an older map? If you do it may think you've gone into the woods.
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post #6 of 6 Old 08-21-2007, 09:20 AM Thread Starter
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Good points - I'm back up this weekend - twice - once to get daughter for last time and then again Monday on way to BC with bike. I'll check these tips out . Unit is locked on follow road but no instructions to retrace or turn are evident when it recalculates. Hadn't checked the map that closely though so will look for a break.

Thanks - if I find out the issue I'll followup with a post.

Safe riding,
Bob

Necessity may be the mother of invention, but desperation is it's father........... (Bell)

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