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 Sat Nav with OS facility
412514 Post Posted: Sat Apr 19, 2008 4:31 pm Thank this member for this postReply with quote Add User to Ignore List Back To Top

roblockey  


Joined: Nov 28, 2007

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Hi.Can anyone recommend a Sat Nav that has an Ordnance Survey grid reference search facility.The one i have at present just does Post Codes but not much good for finding farm CL,s with a limited address.Any help would be appreciated.

regards Rob.
 
412529 Post Posted: Sat Apr 19, 2008 4:56 pm Thank this member for this postReply with quote Add User to Ignore List Back To Top

spykal Subscriber 29/12/2021 


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Hi Rob

It depends what you mean by Sat Nav.

I have Microsoft Autoroute set up with GPS on the laptop in the van to use as a Sat Nav and that can search for any Ordnance Survey grid reference.

I also have Memory Map on the laptop and on my PDA. Memory Maps are based on OS maps so I can locate from them too.

If you already own a pda (pocket computer) there is a free converter program for it online
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If you have internet access on the move you could go to
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and use the, easy to use online converter, that you will find there. Or convert the locations on the PC at home before you set off.

Mike


Last edited by spykal on Sat Apr 19, 2008 4:59 pm; edited 1 time in total

______________________________________________________________
When confronted by a problem, you can solve it easily by reducing it to the question, "How would the Lone Ranger have handled this?"
 
412534 Post Posted: Sat Apr 19, 2008 4:59 pm Thank this member for this postReply with quote Add User to Ignore List Back To Top

Mandi  


Joined: Jan 10, 2008

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Hi,

I have a Garmin nuvi 660 which has GPS co-ordinates and a format called British National Grid, but the format is different to an OS grid ref. There are three other GPS formats avialable. Not sure if this will help.

Regards.
 
412559 Post Posted: Sat Apr 19, 2008 5:35 pm Thank this member for this postReply with quote Add User to Ignore List Back To Top

jemshome  


Joined: Nov 10, 2007

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I have also found that the C&CC lat & long co-ords often do not correctly locate the sites in GE.

The advantage of GE is that you can often locate the site by scanning around the satellite image.

I'm fairly certain the problem is that the lat & long provided for some of the C&CC sites is inaccurate. I have recently transferred the campingcar-infos aires sites to GE. They distinguish between sites for which the GPS data has been verified and those that have not. All of the verified sites that I have checked in high resolution areas are spot on.

jem
 
412638 Post Posted: Sat Apr 19, 2008 8:15 pm Thank this member for this postReply with quote Add User to Ignore List Back To Top

pelicanpete  


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The inaccuracies you mention (i.e "half-a-mile out") are probably caused by the different geodetic datums used by the map maker or Google maps and the GPS receiver in use.

The most common datum is WGS-84 but there are hundreds of others in use around the world. I believe for land maps in the UK the datum is OSGB. Possibly, with Google Earth being an American company they use yet another datum, but I speculate. As an ocean navigator, I have to synchronize my chart plotter (or paper chart) with my GPS by telling the GPS what datum the chart was mapped with. Mostly commonly these days it is WGS-84 but on older charts it can be WGS-72. If not synchronized, inaccuracies at way-points or destinations can be of the magnitude or greater than you mention.

I have a Garmin 660 for land use in my car and MH and have used many other makes of satnavs. To the best of my knowledge none of these devices allows the user to nominate a particular geodetic datum, hence the slight inaccuracies.
PP
 
412681 Post Posted: Sat Apr 19, 2008 10:18 pm Thank this member for this postReply with quote Add User to Ignore List Back To Top

spykal Subscriber 29/12/2021 


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pelicanpete wrote:
To the best of my knowledge none of these devices allows the user to nominate a particular geodetic datum, hence the slight inaccuracies.
PP


Hi PP

Memory Map allows a choice, several built in choices and a facility to enter more ...see the screen shot below

Mike


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______________________________________________________________
When confronted by a problem, you can solve it easily by reducing it to the question, "How would the Lone Ranger have handled this?"
 
412686 Post Posted: Sat Apr 19, 2008 10:38 pm Thank this member for this postReply with quote Add User to Ignore List Back To Top

pelicanpete  


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Hi Spykal,

That looks like a PC based system you use. That would certainly overcome the problem at hand. However, unless I'm mistaken, the self contained sat-navs most people in-car use won't have this facility.

For my next foray to the continent, I intend to equip my laptop with a nav. software programme and GPS antenna similar to yours.
PP
 
412688 Post Posted: Sat Apr 19, 2008 10:46 pm Thank this member for this postReply with quote Add User to Ignore List Back To Top

spykal Subscriber 29/12/2021 


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pelicanpete wrote:
Hi Spykal,

That looks like a PC based system you use. That would certainly overcome the problem at hand. However, unless I'm mistaken, the self contained sat-navs most people in-car use won't have this facility.


Hi PP

Yes that screen shot was from my PC but Memory Map runs on my Pocket PC too... a Mio 168 which has a built in GPS reciever. It also runs Tomtom but not simultaneously. I have a windscreen mount for use in the van. The only rider I would add is that using a Pocket PC does require quite some knowledge of the "how to" when it comes to dealing with the software and the hardware. It is more complicated to use and set up than a dedicated unit.



Mike

______________________________________________________________
When confronted by a problem, you can solve it easily by reducing it to the question, "How would the Lone Ranger have handled this?"
 lat long on gps
412690 Post Posted: Sat Apr 19, 2008 10:54 pm Thank this member for this postReply with quote Add User to Ignore List Back To Top

ambegayo Subscriber 23/01/2015 


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I also have Garmin Nuivi 660, but have not found the menu into lat/long. The only thing it responds to is city/postcode, street, number in street, most camp sites don't give this address and found in France and Spain difficulty in nailing exact position of sites. It appears when you buy these GPS's they are 2 or 3 years behind with updates. I appreciate the facility for downloading updates and POI's I have all our stops in Favourites, can I save these somewhere else on the GPS or just keep a written log of the full address and enter them when we need to use them again. A friend has the latest navman and it camp up with file for campsites amongst others. The Garmin does not have this. Admittedly I haven't had the time to read the manual(79pages) I find the Garmin tedious at times sending us a route we don't want to go-like through Paris to get to Amiens. But always use in conjection with a good large scale map.
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