"Whoah! I'm going to to Antigua!"

nick_j007 · Posted: Sun Jan 18, 2004 7:42 pm Post subject: "Whoah! I'm going to to Antigua!"

Hello all,

I use my Etrex Venture a reasonable amount here in the UK, and have it set to the British Grid and Ord Survey GB map datum.

I will be going to Antigua for a couple of weeks in March and to help alleviate my paranoia of getting lost will be taking the Venture with me.

What settings should I have it set to please? Anyone know? I see a NAD27 Bahamas...that maybe? or NAD27 Caribbn?

So, which Position format, and which Map Datum please.

I admit to not really understanding the format of hdd,mm,ss, but I shall need it set so it might correlate properly with a detailed map for walking etc.

Hope someone can point me in the right direction?

All the best to you all.

Nick, Worcs. UK

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DavidW · Posted: Mon Jan 19, 2004 2:03 am Post subject:

The way to handle this is to find out what maps are available to you - then attempt to discover what settings you should use for those maps.

There may not be a generic answer to the question.

David

nick_j007 · Posted: Tue Jan 20, 2004 5:15 pm Post subject:

Ok many thanks David,

I think I shall have to sort it out once I am there with map in hand.

Cheers,

Nick
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DavidW · Posted: Tue Jan 20, 2004 8:17 pm Post subject:

If it's not obvious, it may just be a case of trying settings until you find the one that gives plausible positions. The point is, though, that you can theoretically get maps on any one of a number of different datums. If you're really lucky, the map will be marked with the right datum!

You may find a post in the sci.geo.satellite-nav newsgroup may get you some useful information; there's much more of an international audience there.

David

nick_j007 · Posted: Wed Jan 21, 2004 2:26 pm Post subject:

Ok thanks again David,

I'll look at that newsgroup for a search there.

Hopefully as you say the map will have the right datum!

Nick

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