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Garmins

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Garmins

Has anyone had any problems with taking garmins further than 250 miles away and it no getting satalite reception? My old 810 wouldn't work when I flew out to bangkok. After I got a soaking a while back I've got the new 1000. Has anyone had any problems with taking them far away and them not working?

While we're on the topic of garmins whats everyones preferred way to get extra maps installed?

Cheers

Paz

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I'm not sure I understand the

I'm not sure I understand the question - more than 250 miles away from what?

As for maps there are plently of options to convert OSM maps into Garmin formats:
-OSM Map On Garmin - OpenStreetMap Wiki
https://wiki.openstreetmap.org/wiki/OSM_Map_On_Garmin

or there are numerous maps already converted available for download:
-OSM Map On Garmin/Download - OpenStreetMap Wiki
https://wiki.openstreetmap.org/wiki/OSM_Map_On_Garmin/Download

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Garmins

I have noticed that it can takle a long time (up to one hour sometimes) for my Garmin Edge 800 to locate satellites in a country outside the UK (where I live). But always I have eventually been able to lock onto some satellite/s or other. I've never understood the delay, so if anyone can explain, I'd be really interested.

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I don't know the age of your

I don't know the age of your device, does it support GLONASS positioning? In what environment (city, open countryside...) and latitude was it taking an hour to get a position?

The best first step would be a firmware upgrade and hard reset, have you tried that?

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Garminry

Yes, I've been all up-to-date (2.70), but Edge 800 doesn't support GLONASS. My Edge 800 is 2011 vintage. Suitable for Flog IT! or Antiques Roadshow? ;-)

thanks anyway

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OK - well assuming this wasn

OK - well assuming this wasn't occurring in a built up urban area with many high rise buildings or at extreme latitudes, there is definitely something wrong there. Probably best to search or post on garmin forums to find your answer.

Suerte

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Garmin & GPS

Hi Paz - GPS receivers, if working correctly, should normally update their position within minutes regardless of distance from previous location. If the receiver has been switched off for a long period of time (say months) and is a long way from its previous location then you may find it takes some minutes to download a new GPS almanac and calculate current position. Old receivers from the late 90s / early 2000s were slower than modern units but even they would calculate position within 5 minutes from switch on. Note that there will ALWAYS be satellite reception anywhere in the world unless the signal is blocked by vegetation or buildings. Maybe your unit was stuffed?

For maps I use http://www.openfietsmap.nl/ or http://garmin.openstreetmap.nl/ which allows downloads of Garmin maps for Europe and the rest of the world but there are other mapping websites - http://tools.geofabrik.de/ is a great app for comparing maps. FYI I still use an Edge 705 and when the rubber buttons on my first unit fell out after 6 years I bought a replacement on eBay. They do the job and seem pretty robust & reliable. They are a slow if you use a map with too much detail but if you load only the area you're riding in they're fine.

Plenty of info on the WWW about the GPS system, receivers, maps etc..................

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This is a common event

This is a common event wherever you travel. Yes, it does take up to an hour to log on the first time in a new country, I assume it is looking for the satellites it already knows, but then searches for others when it can't find them. Once you have switched it on and found the new satellites it should pick them up every time. It has happened on both my 800 and 1000. But. one thing that does affect it is tall buildings. Last time in Saigon we stayed in a small backstreet hotel, I didn't get a satellite lock until I emerged from the alley on to a main road.

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GPS Startup Time

A properly working GPS receiver with a reasonable clear view of the sky and few if any obstructions should always calculate position within minutes, not hours. If the receiver is taking an hour or more to calculate position then there are a couple of possibilities; the unit is stuffed (broken) as suggested in my previous reply or there is significant blocking of satellite signal such that the receiver cannot update the GPS almanac. The almanac which provides orbital information for all satellites, is transmitted every 12.5 minutes. So in an extreme situation where the receiver has been off for months (the almanac is considered to be valid for up to 180 days), the user has moved location by 1000s kms, or it's a new receiver then position calculation may take up to 15 minutes. Manufacturers estimate that time to first fix (ttff) from the factory will normally take up to 15 minutes. If you're not getting a position then move out in to the open away from buildings and trees and if that doesn't work buy a new GPS receiver.

PS GPS satellite signal reception is the same all over the world and is independent of which country you're in.
PPS Even my Google tablet (which probably contains a pretty basic GPS receiver) will get a first fix with 5 minutes or less.
PPPS GPS does not work indoors so it's very difficult to get an accurate fix on your bed in the backpackers dorm.

Hope this helps.