Alex's point is well-taken: If the chart indeed was not accurate enough to check the 15 ft "accuracy" then there is no way to establish the accuracy limit is that size or smaller. I have noticed errors in placement of waypoints (established in the field, not from a chart), on a subsequent revisit of a marker (not a buoy), of about 200 feet in one case and 400 feet in another case ... which I took as an indication of the limits of the system --- and as a piece of knowledge important if/when I need to REALLY trust the dang GPS. -- Dave Kruger Astoria, OR ----- Original Message ----- From: "alex" <al.m_at_3web.net> > I think (have to turn it on, and wait for a while) that my Garmin can show > 15 ft accuracy, which is 4.5m. There are additional (or different) > satellites to achieve such increased accuracy, called WAAS. But not in all > areas. I've seen such accuracy displayed quite often, and didn't notice it > to be incorrect, though such accuracy exceeded that of the built-in map :-). *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Thu Sep 02 2004 - 12:24:16 PDT
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