Messages numbered the same as others already stored in the memory are not saved in duplicate. You can scroll the message list much like a Windows file list, using Up and Down keys to get to the message you want and pressing Enter to read it. Messages usually contain more information than the screen displays, so you have to manually scroll a line at a time or set the automatic scrolling, which has fast and slow speeds. If you connect the receiver to your GPS and to a computer, you'll be able to download messages to the computer's memory or directly to a serial input printer. Connection information appears in the owner's manual and is available from an on-screen menu.
Navtex transmitters are along the coasts of nearly all countries.
They transmit digital messages containing information about navigational warnings, weather, ice reports, searches and rescues, piracy and armed robbery. To avoid interference among stations, each transmitter in a given sea area is assigned a specific transmit time. Routine messages are usually sent every four hours, emergency messages when necessary. Navtex coverage is reasonably continuous for the Atlantic, Gulf and Pacific coasts. There may be some coverage gaps in the Southeast U.S., Alaska and Guam areas.