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<P>[quote user="Datafever"]Well, I personally would not consider +/- 3 meters to be a big margin of error for a $200 unit (unmapped).<BR><BR>The GPS satellite system no longer uses SA to throw a 30 meter margin of error into the signal. The military removed that years ago. It is now possible to purchase consumer products that can pinpoint an accurate location to under one meter, but that kind of accuracy comes as a big price.<BR><BR>Nevertheless, I suspect that railroads will continue to lag current technology by twenty years or so. And there is nothing wrong with that.<BR><BR>Have a good day, gentlemen.<BR><BR>[/quote]</P> <P>20 years is a very long time, technologically speaking. So it should be easy for you to prove that. Go ahead.</P> <P>S. Hadid</P>
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