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Living on borrowed time!
Join Date: Dec 2003
Location: Tacoma, WA, USA
Posts: 7,020
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GPS anomalies
Has anyone noticed any GPS anomalies lately? has the acccuracy of your GPS unit 'drifted' at all? Just curious if I am seeing something or it's the way I'm inputting/reading my waypoints. My magellan mariner has been acting 'wierd' lately; probl'y just me, but since a significant minority of us use GPS, I thought I'd ask....
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Better a has-been than a wanna-be 'I am John Andrew Moffett of the Clan Moffat and by god I live, love, seek, fail, grieve and die as I so choose and I call no man master save me'. |
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05-17-2004, 09:06 AM
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Join Date: Sep 2002
Location: Metuchen, NJ
Posts: 1,553
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I haven't had any problems with mine. Was it cloudy or overcast when you had the problems - sometimes that causes errors.
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05-17-2004, 09:12 AM
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unsafe at any speed
Join Date: Dec 2003
Location: Arkansas
Posts: 12,327
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I also use a Meridian, with the mapsend Topo software. ocasionally I notice that I am 50ft off the road on the map... I figured it was a problem with the mapping software.
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Bill Swartzwelder 2002 R1100S Prep/ 2024 Tenere 700 |
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05-17-2004, 09:26 AM
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Join Date: Mar 2003
Location: Northern VA
Posts: 1,086
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GPS accuracy can vary a lot. Just the same, it would help to know a bit more about the problem you are seeing. As mentioned above, it isn't unsusual to have significant differences between reality and the GPS maps. This can happen for a variety of reasons. This would be a consistent thing though. If you are running into strange unrepeatable behaviors there are a number of possible explanations. I have had days when I couldn't get mine to lock on to a signal well enough to navigate for 30 minutes due to the position of the satellites.
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04 R1100SA (Pacific Blue metalic) 99 R1100SA (black) -- Totalled |
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05-17-2004, 10:04 AM
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Join Date: Oct 2000
Location: Bozeman Montana
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What yr was it manufactured?, Older models had some software problems. I recall in the early 90's Buying a Megellan that was
designed for the open water didn't work to well in the woods. When I did a lot of backpacking, even when I was in a open clearing it would have problems locking on 
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Dyno'd 104Hp 74.3 ft lbs torque at the rear wheel  1150 cylinders 12:1 pistons/ race cams, Lennies induct, Laser Boxercup II Exhaust, Ohlins shocks, Dymag Carbon Fiber Five Spoke wheels, Crossover tube removed,  heads ported and polished Bigger valves installed intake and exhaust! SJ power filter, motoyoyo clamps , HID
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05-17-2004, 11:40 AM
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Living on borrowed time!
Join Date: Dec 2003
Location: Tacoma, WA, USA
Posts: 7,020
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Well, the might be it; I have an older mariner model; waterproof, and it seems to work well; I'm going to see if there's a firmware/software upgrade. The specific issue is that I set waypoints with it a while back on a ride I do regularly, and that particular waypoint set was always accurate; now, the same one seems 'different' and I was wondering if the accuracy algorythm that's used for commercial GPS has been 'modified' by Big Brother for the duration; a couple of pilot friends seemed to notice the same thing with their commercial gear; who knows...
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Better a has-been than a wanna-be 'I am John Andrew Moffett of the Clan Moffat and by god I live, love, seek, fail, grieve and die as I so choose and I call no man master save me'. |
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05-17-2004, 11:56 AM
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Join Date: Oct 2000
Location: Bozeman Montana
Posts: 3,063
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Is it the White one ?
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Dyno'd 104Hp 74.3 ft lbs torque at the rear wheel 1150 cylinders 12:1 pistons/ race cams, Lennies induct, Laser Boxercup II Exhaust, Ohlins shocks, Dymag Carbon Fiber Five Spoke wheels, Crossover tube removed, heads ported and polished Bigger valves installed intake and exhaust! SJ power filter, motoyoyo clamps , HID
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05-17-2004, 11:59 AM
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Living on borrowed time!
Join Date: Dec 2003
Location: Tacoma, WA, USA
Posts: 7,020
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Yes, it is; handheld with a monochrome display. Is there a firmware upgrade for it? thanks...
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Better a has-been than a wanna-be 'I am John Andrew Moffett of the Clan Moffat and by god I live, love, seek, fail, grieve and die as I so choose and I call no man master save me'. |
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05-17-2004, 12:09 PM
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Join Date: Mar 2003
Location: Northern VA
Posts: 1,086
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If anything, Big brother is making GPS more accurate. Clinton signed a bill removing the encryption requirement for the high accuracy GPS stream. All of the new birds going up have enhanced accuracy.
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04 R1100SA (Pacific Blue metalic) 99 R1100SA (black) -- Totalled |
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05-17-2004, 12:13 PM
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Join Date: Oct 2000
Location: Bozeman Montana
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It's your GPS
I had the same one as you in the early 90's sold it and bought a Garmin.They maybe able to upgrade to a newer program?
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Dyno'd 104Hp 74.3 ft lbs torque at the rear wheel 1150 cylinders 12:1 pistons/ race cams, Lennies induct, Laser Boxercup II Exhaust, Ohlins shocks, Dymag Carbon Fiber Five Spoke wheels, Crossover tube removed, heads ported and polished Bigger valves installed intake and exhaust! SJ power filter, motoyoyo clamps , HID
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05-17-2004, 12:17 PM
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Living on borrowed time!
Join Date: Dec 2003
Location: Tacoma, WA, USA
Posts: 7,020
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Supposedly, the latest enhanced mode is supposed to have something like 'dial-an-accuracy' via software; I remember a TRW guy telling me the last 2 birds they launched could be programmed to either do the WAAS enhancement (default) or 'go fuzzy' in specific locales; the exact technical details escape me now as I don't do that EPLRS stuff anymore; I just wanted to get a feel for the general consensus; I agree my handheld is a cheapo, but it USED to have repeatable results with the same dataset and now it doesn't seem to...hmmmm...and it's not batteries as I power it from the scoot...
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Better a has-been than a wanna-be 'I am John Andrew Moffett of the Clan Moffat and by god I live, love, seek, fail, grieve and die as I so choose and I call no man master save me'. |
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05-17-2004, 01:10 PM
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Registered
Join Date: Oct 2000
Location: Bozeman Montana
Posts: 3,063
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Hey;
We will have to hook-up for a ride sometime always riding up to Seattle to see my sister at Ridewest BMW
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Dyno'd 104Hp 74.3 ft lbs torque at the rear wheel 1150 cylinders 12:1 pistons/ race cams, Lennies induct, Laser Boxercup II Exhaust, Ohlins shocks, Dymag Carbon Fiber Five Spoke wheels, Crossover tube removed, heads ported and polished Bigger valves installed intake and exhaust! SJ power filter, motoyoyo clamps , HID
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05-17-2004, 03:04 PM
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Living on borrowed time!
Join Date: Dec 2003
Location: Tacoma, WA, USA
Posts: 7,020
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Sure EZ; let me know; IM me when you're up this way; I know a killer route up the west side of Puget Sound, up all the way to Kingston, then ferry across to Edmonds; right along the waterfront most of the way and not too much cage traffic...
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Better a has-been than a wanna-be 'I am John Andrew Moffett of the Clan Moffat and by god I live, love, seek, fail, grieve and die as I so choose and I call no man master save me'. |
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05-17-2004, 03:09 PM
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Registered
Join Date: Oct 2000
Location: Bozeman Montana
Posts: 3,063
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Will do
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Dyno'd 104Hp 74.3 ft lbs torque at the rear wheel 1150 cylinders 12:1 pistons/ race cams, Lennies induct, Laser Boxercup II Exhaust, Ohlins shocks, Dymag Carbon Fiber Five Spoke wheels, Crossover tube removed, heads ported and polished Bigger valves installed intake and exhaust! SJ power filter, motoyoyo clamps , HID
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05-17-2004, 07:51 PM
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