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Message |
| ps56k... |
 Posted: Wed Oct 21, 2009 12:16 am |
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Guest
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I was driving on the highway
in the western burbs of Chicago
with my Garmin Nuvi 255...
All of a sudden, the screen showed loss of satellite signal.
I was driving on the tollway - out in the open -
Flipped to the main screen, and the sat signal meter showed nothing !
It stayed that way all the way home - about 30mins -
Turned it off, back on and it took a little while,
back gradually came back to life with full bars.
In all my years of using Garmin devices,
I've never seen that happen...
--
----------------------------------
"If everything seems to be going well,
you have obviously overlooked something." - Steven Wright |
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| PeterD... |
| Posted: Wed Oct 21, 2009 7:08 am |
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On Wed, 21 Oct 2009 01:16:05 -0500, "ps56k"
<pschuman_no_spam_me at (no spam) interserv.com> wrote:
[quote]I was driving on the highway
in the western burbs of Chicago
with my Garmin Nuvi 255...
All of a sudden, the screen showed loss of satellite signal.
I was driving on the tollway - out in the open -
Flipped to the main screen, and the sat signal meter showed nothing !
It stayed that way all the way home - about 30mins -
Turned it off, back on and it took a little while,
back gradually came back to life with full bars.
In all my years of using Garmin devices,
I've never seen that happen...
[/quote]
I've seen similar things with other GPS units. When I see something
like that I usually just power down, and restart it. Not sure if it is
a software or hardware glitch.
The most interesting problem is my Magellen reboots itself from time
to time. Always (almost) the same location, southern CT, on trips from
Florida to NH. Get into CT, headed for Hartford, and at some point it
reboots--and has done it several times. There's somethign there,
interfering with it I'm sure. |
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| Mark F... |
| Posted: Wed Oct 21, 2009 7:40 am |
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ps56k wrote:
[quote]I was driving on the highway
in the western burbs of Chicago
with my Garmin Nuvi 255...
All of a sudden, the screen showed loss of satellite signal.
I was driving on the tollway - out in the open -
Flipped to the main screen, and the sat signal meter showed nothing !
It stayed that way all the way home - about 30mins -
Turned it off, back on and it took a little while,
back gradually came back to life with full bars.
In all my years of using Garmin devices,
I've never seen that happen...
Just an incoming missile being jammed by ECM...[/quote]
Or, some idiot following you with a GPS jammer as
from dealextreme.com <grin> /mark |
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| ps56k... |
| Posted: Wed Oct 21, 2009 9:22 am |
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Guest
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"Mark F" <markotime at (no spam) shaw.ca> wrote in message
news:q8EDm.6148$86.2480 at (no spam) newsfe15.iad...
[quote]ps56k wrote:
I was driving on the highway
in the western burbs of Chicago
with my Garmin Nuvi 255...
All of a sudden, the screen showed loss of satellite signal.
I was driving on the tollway - out in the open -
Flipped to the main screen, and the sat signal meter showed nothing !
It stayed that way all the way home - about 30mins -
Turned it off, back on and it took a little while,
back gradually came back to life with full bars.
In all my years of using Garmin devices,
I've never seen that happen...
Just an incoming missile being jammed by ECM...
Or, some idiot following you with a GPS jammer as
from dealextreme.com <grin> /mark
[/quote]
It was an interesting moment thinking.....
- SA was turned back on.
- GPS System was hacked.
- Garmin receiver broke.
- Firmware update screwed device.
- |
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| LightByrd... |
| Posted: Wed Oct 21, 2009 10:24 am |
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"ps56k" <pschuman_no_spam_me at (no spam) interserv.com> wrote in message
news:hbm8vl$p3h$1 at (no spam) news.eternal-september.org...
|I was driving on the highway
| in the western burbs of Chicago
| with my Garmin Nuvi 255...
|
| All of a sudden, the screen showed loss of satellite signal.
| I was driving on the tollway - out in the open -
| Flipped to the main screen, and the sat signal meter showed nothing !
| It stayed that way all the way home - about 30mins -
| Turned it off, back on and it took a little while,
| back gradually came back to life with full bars.
|
| In all my years of using Garmin devices,
| I've never seen that happen...
|
| --
| ----------------------------------
| "If everything seems to be going well,
| you have obviously overlooked something." - Steven Wright
|
|
I had something similar with my 76s. I was driving through Brampton,
Ontario when it totally locked up.
Did it twice. Had to remove the batteries each time.
All I could figure was that I got too near some 115KV power lines.
Soon as I left Brampton area, all was well.
--
Regards,
Richard Harison |
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| John H. Holliday... |
| Posted: Wed Oct 21, 2009 12:13 pm |
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Guest
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"ps56k" <pschuman_no_spam_me at (no spam) interserv.com> wrote in message
news:hbm8vl$p3h$1 at (no spam) news.eternal-september.org...
[quote]I was driving on the highway
in the western burbs of Chicago
with my Garmin Nuvi 255...
All of a sudden, the screen showed loss of satellite signal.
I was driving on the tollway - out in the open -
Flipped to the main screen, and the sat signal meter showed nothing !
It stayed that way all the way home - about 30mins -
Turned it off, back on and it took a little while,
back gradually came back to life with full bars.
In all my years of using Garmin devices,
I've never seen that happen...
[/quote]
Oh, that's the new Obammy GPS tax.....umm, user fee. See you have to put a
quarter in the SD slot in the edge of the device every 75 miles. Once a
month, you swing by the closest IRS office ...or I think Acorn is an
authorized payment station in Chicago.. and they shake the coins out of
there into a big cookie jar.
After all, it's not right that the electronic elite with GPSs not pay their
fare share for the satellite system...... |
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| Roy Lewallen... |
| Posted: Wed Oct 21, 2009 1:03 pm |
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Last summer flying in northern California, the yoke-mounted Garmin in my
airplane couldn't find enough satellites for a fix, and wasn't able to
for the next hour or so before I landed. I was flying south at the time,
then east. It usually gets 10 or so satellites without a problem, and
that's the only time it's been unable to. An old Apollo GPS in the plane
was able to get a fix -- it has an external antenna mounted in the clear
on the top of the fuselage. Unfortunately I didn't take the time to see
where the current satellite positions were, but they must have been
bunched up pretty much overhead and/or high to the north and west.
It was another reminder that you should never depend on GPS as your only
available means of navigation.
Roy Lewallen |
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| Fred McKenzie... |
| Posted: Wed Oct 21, 2009 4:41 pm |
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Guest
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In article <9KWdnULzBLItqELXnZ2dnUVZ_radnZ2d at (no spam) giganews.com>,
"LightByrd" <rh at (no spam) noway.invalid.com> wrote:
[quote]I had something similar with my 76s. I was driving through Brampton,
Ontario when it totally locked up.
Did it twice. Had to remove the batteries each time.
All I could figure was that I got too near some 115KV power lines.
Soon as I left Brampton area, all was well.
[/quote]
This does sound like a case of interference, but I doubt the power lines
are the guilty party. I suspect you had been scanned by a RADAR
transmitter. It might have been military, or perhaps you were near a
major airport. I wonder if a TV station's weather RADAR could do it?
If such a signal overloaded the receiver, it is possible that the lockup
was caused by the circuit having a bi-stable characteristic, so it
retained the overload state after the interfering signal was gone.
Recycling power may be the only way to fix it.
Fred |
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| LightByrd... |
| Posted: Wed Oct 21, 2009 7:51 pm |
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Guest
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"Fred McKenzie" <fmmck at (no spam) aol.com> wrote in message
news:fmmck-05B642.18413021102009 at (no spam) nntp.aioe.org...
| In article <9KWdnULzBLItqELXnZ2dnUVZ_radnZ2d at (no spam) giganews.com>,
| "LightByrd" <rh at (no spam) noway.invalid.com> wrote:
|
| > I had something similar with my 76s. I was driving through Brampton,
| > Ontario when it totally locked up.
| > Did it twice. Had to remove the batteries each time.
| > All I could figure was that I got too near some 115KV power lines.
| > Soon as I left Brampton area, all was well.
|
| This does sound like a case of interference, but I doubt the power lines
| are the guilty party. I suspect you had been scanned by a RADAR
| transmitter. It might have been military, or perhaps you were near a
| major airport. I wonder if a TV station's weather RADAR could do it?
|
| If such a signal overloaded the receiver, it is possible that the lockup
| was caused by the circuit having a bi-stable characteristic, so it
| retained the overload state after the interfering signal was gone.
| Recycling power may be the only way to fix it.
|
| Fred
It was!
--
Regards,
Richard Harison |
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| PeterD... |
| Posted: Thu Oct 22, 2009 7:28 am |
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On Wed, 21 Oct 2009 18:41:30 -0400, Fred McKenzie <fmmck at (no spam) aol.com>
wrote:
[quote]In article <9KWdnULzBLItqELXnZ2dnUVZ_radnZ2d at (no spam) giganews.com>,
"LightByrd" <rh at (no spam) noway.invalid.com> wrote:
I had something similar with my 76s. I was driving through Brampton,
Ontario when it totally locked up.
Did it twice. Had to remove the batteries each time.
All I could figure was that I got too near some 115KV power lines.
Soon as I left Brampton area, all was well.
This does sound like a case of interference, but I doubt the power lines
are the guilty party.
[/quote]
Agreed, we do off-road work very often, and frequently follow power
line ROWs to get to areas that we need to be at. Occasionally we'll
loose signal, but that is rare, and always seems to correct itself in
a few seconds. (I suspect arcing insulators may be a factor.)
[quote]I suspect you had been scanned by a RADAR
transmitter. It might have been military, or perhaps you were near a
major airport. I wonder if a TV station's weather RADAR could do it?
[/quote]
Probably not, IMHO. Near Mt. Clemens MI is (was?) a large national
defense radar installation. Notorious for interference. I've lived and
worked around air-ports for years, but it takes one heck of a radar to
put out enough power at ground level to cause problems.
[quote]
If such a signal overloaded the receiver, it is possible that the lockup
was caused by the circuit having a bi-stable characteristic, so it
retained the overload state after the interfering signal was gone.
Recycling power may be the only way to fix it.
[/quote]
Personally I'll stick with my guess of a hardware or software glitch
causing lockup. (Bad design, or defective component). |
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| You... |
| Posted: Thu Oct 22, 2009 12:53 pm |
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Guest
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In article <fmmck-05B642.18413021102009 at (no spam) nntp.aioe.org>,
Fred McKenzie <fmmck at (no spam) aol.com> wrote:
[quote]In article <9KWdnULzBLItqELXnZ2dnUVZ_radnZ2d at (no spam) giganews.com>,
"LightByrd" <rh at (no spam) noway.invalid.com> wrote:
I had something similar with my 76s. I was driving through Brampton,
Ontario when it totally locked up.
Did it twice. Had to remove the batteries each time.
All I could figure was that I got too near some 115KV power lines.
Soon as I left Brampton area, all was well.
This does sound like a case of interference, but I doubt the power lines
are the guilty party. I suspect you had been scanned by a RADAR
transmitter. It might have been military, or perhaps you were near a
major airport. I wonder if a TV station's weather RADAR could do it?
[/quote]
Not likely a Wx Radar as they are not in the same spectrum as GPS
Downlink Signals. Same is true of most of the Military Radar Systems
deployed on land in the US. Now if you are very near a PCS Cellular
Tower, and your GPS Receiver isn't protected from Local Signal Overload,
those may just swamp the GPS Frontend.
[quote]
If such a signal overloaded the receiver, it is possible that the lockup
was caused by the circuit having a bi-stable characteristic, so it
retained the overload state after the interfering signal was gone.
Recycling power may be the only way to fix it.
Fred
[/quote]
GPS receives at (no spam) 1.6 Ghz, and PCS runs at 1.8 - 1.9 Ghz with significant
ERP, local to the Tower. also consider that a PCS Subscriber unit local
to the GPS may also cause an Frontend Overload when it is in use. |
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| LightByrd... |
| Posted: Thu Oct 22, 2009 3:28 pm |
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Guest
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"You" <you at (no spam) shadow.orgs> wrote in message
news:you-1EB6B0.10531122102009 at (no spam) unknown.usenetserver.com...
| In article <fmmck-05B642.18413021102009 at (no spam) nntp.aioe.org>,
| Fred McKenzie <fmmck at (no spam) aol.com> wrote:
|
| > In article <9KWdnULzBLItqELXnZ2dnUVZ_radnZ2d at (no spam) giganews.com>,
| > "LightByrd" <rh at (no spam) noway.invalid.com> wrote:
| >
| > > I had something similar with my 76s. I was driving through Brampton,
| > > Ontario when it totally locked up.
| > > Did it twice. Had to remove the batteries each time.
| > > All I could figure was that I got too near some 115KV power lines.
| > > Soon as I left Brampton area, all was well.
| >
| > This does sound like a case of interference, but I doubt the power lines
| > are the guilty party. I suspect you had been scanned by a RADAR
| > transmitter. It might have been military, or perhaps you were near a
| > major airport. I wonder if a TV station's weather RADAR could do it?
|
| Not likely a Wx Radar as they are not in the same spectrum as GPS
| Downlink Signals. Same is true of most of the Military Radar Systems
| deployed on land in the US. Now if you are very near a PCS Cellular
| Tower, and your GPS Receiver isn't protected from Local Signal Overload,
| those may just swamp the GPS Frontend.
| >
| > If such a signal overloaded the receiver, it is possible that the lockup
| > was caused by the circuit having a bi-stable characteristic, so it
| > retained the overload state after the interfering signal was gone.
| > Recycling power may be the only way to fix it.
| >
| > Fred
|
| GPS receives at (no spam) 1.6 Ghz, and PCS runs at 1.8 - 1.9 Ghz with significant
| ERP, local to the Tower. also consider that a PCS Subscriber unit local
| to the GPS may also cause an Frontend Overload when it is in use.
So why only in this one spot?
Been using the unit from Ontario to Mexico for 3 yrs?
Hmmm....
--
Regards,
Richard Harison |
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| luvjava... |
| Posted: Thu Oct 22, 2009 6:19 pm |
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2 weeks ago I spent the better part of the day on or near the Blue Ridge
Parkway in Va. and my Nuvi 200 lost signal for a better part of 2 days, It
couldnt get a fix while on driving a mountain top or in a wide valley. it
seemed that if I ran it on battery it was a little more stable, but I
wouldnt have wanted to depend on it for Nav.
at the same time, my Venture HC was ROCK SOLID, and I could get a good fix
with my crappy Blackberry Curve
I was ready to turn my Nuvi in for service, but one I left the Roanoke Area
it was fine and I havent had a burp.
I'm heading back to that area this weekend, lets see how it performs.
Here is a sample from my track log,
My Dodge Chargers Tope speed 1072 MPH at 55000 Feet
249 10/11/2009 8:58:19 AM 1030 ft 0.1 mi 0:00:08 58 mph 49°
true N37.18979 W79.61396
250 10/11/2009 8:58:27 AM 1032 ft 299 ft 0:00:08 25 mph 233°
true N37.19101 W79.61220
251 10/11/2009 8:58:35 AM 1369 ft 0.4 mi 0:00:11 119 mph 65°
true N37.19052 W79.61303
252 10/11/2009 8:58:46 AM 15109 ft 2.4 mi 0:00:08 1072 mph 145° true
N37.19274 W79.60704
253 10/11/2009 8:58:54 AM 55401 ft 0.5 mi 0:00:25 67 mph 61°
true N37.16458 W79.58212
"ps56k" <pschuman_no_spam_me at (no spam) interserv.com> wrote in message
news:hbm8vl$p3h$1 at (no spam) news.eternal-september.org...
[quote]I was driving on the highway
in the western burbs of Chicago
with my Garmin Nuvi 255...
All of a sudden, the screen showed loss of satellite signal.
I was driving on the tollway - out in the open -
Flipped to the main screen, and the sat signal meter showed nothing !
It stayed that way all the way home - about 30mins -
Turned it off, back on and it took a little while,
back gradually came back to life with full bars.
In all my years of using Garmin devices,
I've never seen that happen...
--
----------------------------------
"If everything seems to be going well,
you have obviously overlooked something." - Steven Wright
[/quote] |
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| Gene S. Berkowitz... |
| Posted: Thu Oct 22, 2009 7:51 pm |
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Guest
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In article <9E6Em.33807$cL1.10951 at (no spam) newsfe20.iad>, luvjava_delete-
this_ at (no spam) cox.net says...
[quote]2 weeks ago I spent the better part of the day on or near the Blue Ridge
Parkway in Va. and my Nuvi 200 lost signal for a better part of 2 days, It
couldnt get a fix while on driving a mountain top or in a wide valley. it
seemed that if I ran it on battery it was a little more stable, but I
wouldnt have wanted to depend on it for Nav.
at the same time, my Venture HC was ROCK SOLID, and I could get a good fix
with my crappy Blackberry Curve
I was ready to turn my Nuvi in for service, but one I left the Roanoke Area
it was fine and I havent had a burp.
I'm heading back to that area this weekend, lets see how it performs.
[/quote]
You were driving in or near the United States National Radio Quiet Zone;
weird things are possible there...
http://en.wikipedia.org/wiki/United_States_National_Radio_Quiet_Zone
--Gene
[quote]
Here is a sample from my track log,
My Dodge Chargers Tope speed 1072 MPH at 55000 Feet
249 10/11/2009 8:58:19 AM 1030 ft 0.1 mi 0:00:08 58 mph 49°
true N37.18979 W79.61396
250 10/11/2009 8:58:27 AM 1032 ft 299 ft 0:00:08 25 mph 233°
true N37.19101 W79.61220
251 10/11/2009 8:58:35 AM 1369 ft 0.4 mi 0:00:11 119 mph 65°
true N37.19052 W79.61303
252 10/11/2009 8:58:46 AM 15109 ft 2.4 mi 0:00:08 1072 mph 145° true
N37.19274 W79.60704
253 10/11/2009 8:58:54 AM 55401 ft 0.5 mi 0:00:25 67 mph 61°
true N37.16458 W79.58212
"ps56k" <pschuman_no_spam_me at (no spam) interserv.com> wrote in message
news:hbm8vl$p3h$1 at (no spam) news.eternal-september.org...
I was driving on the highway
in the western burbs of Chicago
with my Garmin Nuvi 255...
All of a sudden, the screen showed loss of satellite signal.
I was driving on the tollway - out in the open -
Flipped to the main screen, and the sat signal meter showed nothing !
It stayed that way all the way home - about 30mins -
Turned it off, back on and it took a little while,
back gradually came back to life with full bars.
In all my years of using Garmin devices,
I've never seen that happen...
--
----------------------------------
"If everything seems to be going well,
you have obviously overlooked something." - Steven Wright
[/quote] |
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| ps56k... |
| Posted: Sat Nov 21, 2009 12:13 pm |
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Guest
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"ps56k" <pschuman_no_spam_me at (no spam) interserv.com> wrote in message
news:hbm8vl$p3h$1 at (no spam) news.eternal-september.org...
[quote]I was driving on the highway
in the western burbs of Chicago
with my Garmin Nuvi 255...
All of a sudden, the screen showed loss of satellite signal.
I was driving on the tollway - out in the open -
Flipped to the main screen, and the sat signal meter showed nothing !
It stayed that way all the way home - about 30mins -
Turned it off, back on and it took a little while,
back gradually came back to life with full bars.
In all my years of using Garmin devices,
I've never seen that happen...
--
[/quote]
happened again last night - different area -
Now I will have to watch for the situation....
Drove to our niece's 16 birthday party.
Had my 255 connected to power cord.
Arrived in wooded area - everything was fine.
Left 255 turned on, and power is constant on, even after car turned off.
Came out 3 or 4 hours later.
The GPS was confused, lost sats, etc
Very weird that this has now happened twice with my Nuvi 255...
Don't know if related to long time sitting stationary and idle,
or even with the car powering it... |
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