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eTrex inside

Service mode. Howto put eTrex into service mode and what features it brings.


User map datum map datum introduction.

eTrex vs. datum howto deal with different datums on map and eTrex.

World datum table Table of world's geographics systems. DXYZ,DA,DF values to set up the eTrex to operate with.

Made by DaTrex 2000, Contact: datrex@atlas.cz