Garmin GPS 72 Owner's Manual

Also see for GPS 72: Safety and product information Declaration of conformity Specification sheet Quick start guide Owner's manual & reference guide

Garmin GPS 72 Owner's Manual Manual pdf 59 page image

Loran TD SystemLORAN C is a radio navigation aid operated and maintained in the United States by theUnited States Coast Guard. The name LORAN is an acronym for “LOng RAnge Navigation”.The LORAN system covers the entire United States and the U.S. Coastal Confluence Zone.From the perspective of a mariner, the system is used for ocean and coastal navigation. Itcan be used as a supplemental system for harbor and harbor approach navigation, and it isused for inland navigation by recreational vehicles.LORAN TD FeatureThe LORAN TD (Time Delay) feature eases the transition from using LORAN to usingGPS. The GPSMAP unit automatically converts GPS coordinates to LORAN TDs for thosewho have a collection of LORAN fixes for favorite fishing spots and other waypointsrecorded as TDs. You can display your position as a TD or enter waypoints as TDs. Theaccuracy to be expected from this conversion is approximately thirty meters. When theunit is placed in the LORAN TD format mode, it simulates the operation of a LORANreceiver. Position coordinates may be displayed as TDs, and all navigation functions may beused as if the unit was actually receiving LORAN signals.Using the LORAN TD FormatWhen creating new waypoints using LORAN TD coordinates, you must set the correctLORAN chain number and secondary stations in the Setup TD field before storing thewaypoint. After the waypoint is stored in unit memory, it will always reference the LORANIntroductionAppendix GLoran TD