Garmin GPSMAP 2210 User Manual download pdf (Page 94)

86 GPSMAP 2206/2210 Owner’s Manual

APPendIx > lorAn td systeM

Federal Users in the United States

Federal users can obtain MMSI assignments from their agency radio spectrum

management ofce. These procedures are currently under review by the NTIA

(National Telecommunications and Information Administration).

Users Outside the United States

Users can obtain an MMSI assignment from their telecommunications authority

or ship registry, often by obtaining or amending their ship station license.

Users in Canada

Industry Canada is responsible for assigning MMSI numbers to commercial and

recreational vessels. Information is available at the following Web site:

http://apollo.ic.gc.ca/english/mmsi.html.

For more information regarding MMSIs visit: http://www.navcen.uscg.gov/

marcomms/gmdss/mmsi.htm.

How Can Garmin Help You with DSC?

To receive Distress Calls or Position Reports, you must have a DSC-equipped

chartplotter as well as a VHF radio with DSC support. During normal, non-

emergency Position Report communication, Channel 70 (156.525 MHz) has been

set aside as the VHF/DSC digital call channel.

For a Distress Call, a mariner presses the MayDay button on the VHF radio.

The call transmits on an emergency channel with the MMSI number attached to

the call (if you have DSC support). Any DSC-equipped mariner (on sea or land)

within range can receive the call.

LORAN TD System

LORAN-C is a radio navigation aid operated and maintained in the U.S.A by

the United States Coast Guard. The LORAN (LOng RAnge Navigation) system

covers the entire U.S.A. and the U.S. Coastal Conuence 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 GPSMAP unit automatically converts GPS coordinates to

LORAN TD for those who have a collection of LORAN xes for favorite shing

spots and other waypoints recorded as TDs. You can show your position as a

TD or enter waypoints as TDs. The expected accuracy from this conversion is

approximately 30 meters. When the unit is placed in the LORAN TD format

mode, it simulates the operation of a LORAN receiver. Position coordinates can

be displayed as TDs, and you can use all navigation functions as if the unit was

actually receiving LORAN signals.

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 eld

before storing a waypoint. You must have the correct chain number and the

secondary station identiers to use this option correctly. These values vary for

each coordinate set or geographical location. Failure to enter correct information

could result in inaccuracies for the desired destination. After the waypoint is

stored in the unit’s memory, it always references the LORAN chain number

and secondary stations currently selected in the Setup TD eld. If you enter a

different LORAN chain number, change the secondary stations or offsets in the

Setup TD eld, the active waypoint information reects those changes. Because

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Garmin GPSMAP 2210 User Manual Page 94

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