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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: GPS & Magnetic Bearings
From: Pierre Boucher
Date: 2003 Feb 9, 22:59 -0500
From: Pierre Boucher
Date: 2003 Feb 9, 22:59 -0500
>Just a quick note on the magnetic variation: I was told by an authority on >the subject that after 5 years, the accuracy of the magnetic variation >information contained within your GPS software starts to drop off. I might be wrong but I think GPS get the variation infos from the ephemeris received from the satellites. ************************************************************************** X XX X Pierre Boucher N XXX XX formation en navigation de plaisance XXXX XXX Ste-Therese (Quebec) Canada XXXXX XXX XXXXXX XXX la "VOILE"... le reste n'est que du vent... XXXXXXXXXXXXXX ''Sail, Sail !''... the rest is only wind XXXXXXXXXXXX XXXX EMAIL: pboucher@lavoile.com XXX "http://www.lavoile.com" **************************************************************************