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etrex not accurate

Former Member over 11 years ago

My etrex 2nd grid ref is always 500m out. Please help.

0 Former Member over 11 years ago

You probably need to change your datum to match whatever you're using as a reference. GPS units use WGS84 by default which may or may not be correct for your situation.

0 SUSSAMB over 11 years ago

My etrex 2nd grid ref is always 500m out. Please help.

What makes you think this?