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What Map Datum is used in the M7 GX?

The M7 GPS transponder report all latitude and longitudes using World Geodetic Survey 1984 (WGS85) datum. Speed is reported in km/hour. Time is UTC as reported by the GPS receiver. Altitude is in meters.

The World Geodetic System is a standard for use in cartography, geodesy, and navigation. It comprises a standard coordinate frame for the Earth, a standard spheroidal reference surface (the datum or reference ellipsoid) for raw altitude data, and a gravitational equipotential surface (the geoid) that defines the nominal sea level.

The latest revision is WGS 84 (dating from 1984 and last revised in 2004). Earlier schemes included WGS 72, WGS 66, and WGS 60. WGS 84 is the reference coordinate system used by the Global Positioning System.

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