Loran Td Setup; Loran Td Feature; Using The Loran Td Format - Garmin West Marine 276C Plus Owner's Manual

LORAN TD Setup

LORAN C is a radio navigation aid operated and maintained in the
United States by the United States Coast Guard. The name LORAN
is an acronym for "LOng RAnge Navigation." The LORAN
system covers the entire United States and the United States
Coastal Confluence Zone. From the perspective of a mariner, the
system is used for ocean and coastal navigation. It can be used as a
supplemental system for harbor and harbor approach navigation, and
it is used for inland navigation by recreational vehicles.

LORAN TD Feature

The LORAN TD (Time Delay) feature eases the transition from
using LORAN to using GPS. The unit automatically converts
GPS coordinates to LORAN TDs for those who have a collection
of LORAN fixes for favorite fishing spots and other waypoints
recorded as TDs. You can display your position as a TD or enter
waypoints as TDs. The accuracy to be expected from this conversion
is approximately thirty (30) meters. When the unit is placed in the
LORAN TD format mode, it simulates the operation of a LORAN
receiver. Position coordinates may be displayed as TDs, and
all navigation functions may be used as if the unit was actually
receiving LORAN signals.
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Using the LORAN TD Format

When creating new waypoints using LORAN TD coordinates,
you must set the correct LORAN chain number and secondary
stations in the Setup TD field before storing the waypoint. After
the waypoint is stored in unit memory, it will always reference the
LORAN chain number and secondary stations currently selected in
the Setup TD field. If you enter a different LORAN chain number
or change the secondary stations or offsets in the Setup TD field, the
active waypoint information will reflect those changes. Since the
276C Plus 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.
Enable LORAN TD through the Location Format field in the
Location Setup tab of the Main Menu. The LORAN TD Setup
window contains the fields to select the Loran GRI-Chain Number,
Primary and Secondary Stations, and TD Offsets.
A > L TD S
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