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Is the GPS ground track true or magnetic?
Is the ground track (TRK in Garmin) a magnetic or a true course or
does it depend on a specific GPS unit?
In some Garmin non-aviation-specific handheld GPS units (e.g. 76S, and most of the Etrex ...
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Is the GPS ground track true or magnetic?
The Garmin units display their ground track as magnetic heading.
Source: We recently performed a test-flight with in which we compared the Garmin display to our experimental test recording devices (...
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