UTM's are marked on USGS topographic charts. This system divides the Earth into 60 zones, each 6 degrees wide in longitude.
British, Irish, Finnish, German, New Zealand, Swedish, Swiss, Taiwan, and Greek grid systems are the national coordinate system used only in their respective countries. In order to use these grid systems, you must be in the respective country. This unit will pick the matching datum for you when you select the grid. See the entry on Map Datum Selection for more information.
The Military Grid Reference System (MGRS) uses two grid lettering schemes, which are referred to as standard and standard + 10 MGRS on this unit. Your position and datum in use determines which one to use. If you use standard, and your position is off significantly, then try the alternate.
NOTE: When the position format is changed, it affects the way all posi- tions are shown on all screens. This includes waypoints.
To change the coordinate system, press ENT while COORDINATE SYSTEM is highlighted. Press the ↑ or ↓ arrow keys to highlight the desired for- mat. Press ENT to select it. Press EXIT to erase the menus.
To setup Loran TD:
NOTE:
If the Loran TD conversion is chosen, you must enter the local Lo- ran chain identification for the master and slaves. Do this by select- ing "Setup Loran TD" at the bottom of the "Coordinate System" menu and select the ID. Press EXIT to erase this menu.
Configure Loran TD menu.
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