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06-01-2011, 09:45 PM
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Senior Member
Join Date: Oct 2009
Location: Wildomar, CA.
Posts: 294
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Adjust for Declination
GPS works in geodetic north while your compass is using magnetic north. The declination for San Diego is around 13°+/-. Your's appears to be out by 22°, not sure why.
Here is a link to the USGS http://rockyweb.cr.usgs.gov/outreach...gps_north.html Here is a link to help determine your declination http://www.thecompassstore.com/decvar.html Hope this helps. |
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