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GPSMAP 76 Owner’s Manual 69
APPENDIX > LORAN TD
currently selected in the Setup TD field. If you enter a
different LORAN chain number, change the secondary
stations or offsets in the Setup TD field, the active
waypoint information will reflect those changes. Since
the GPSMAP 76 does not rely on the LORAN signal
for navigation, it can reference a different GRI chain
and/or secondary stations and still navigate to the
location stored in memory.
The Location Format field is accessed in the Main
Menu under the Setup option’s Location tab. The
‘LORAN TD Setup’ window contains the fields to
select the Loran GRI-Chain Number, Primary and
Secondary Stations, and TD Offsets.
If the active GRI Chain, Secondary Stations, or Offsets
are changed, all waypoints stored in the units memory
will update and reference the the new settings when
displayed as a LORAN TD. It is important to note that
the saved coordinates of the waypoint are not being
modified, they are only being displayed in reference to
the different GRI Chain, Secondary Stations or Offsets.
Remember that the GPS is not relying on the LORAN
signal for navigation. The GPSMAP 76 converts the
TD coordinate to a LAT/LON coordinate before storing
a waypoint to memory. The unit can navigate to a
converted TD coordinate anywhere in the world.
To setup Loran TD from the Main Menu:
1. Using the ROCKER, highlight the Location
Format field on the Location tab and press
ENTER.
2. Highlight Loran TD, press ENTER. This
displays the LORAN TD Setup window.
3. To change the settings of any of the five fields,
highlight the field, press ENTER, select/enter
the desired setting then press ENTER.
4. When done, press the PAGE key to return to
the Main Menu.