The same CRS identifier may be used by more than one CRS as any of 21 NAVAREAs may comprise only 25 different identifiers (from A to Z) that includes International and National NAVTEX. Beside that the NAVTEX message transmission format doesn't include CRS name but only CRS identifier. That means NAVTEX receivers must have an integrated database that comprises all CRS names, their identifiers and NAVAREA to which they belongs for each frequency separately. Each received message is usualy connected with an entry from the database based on manual CRS stations setup. That means each CRS identifier should have set up appropriate CRS name otherwise the CRS name displayed in a message may be wrong or absent. As CRS stations are changing (from time to time some are new and some are closed), mentioned database should be updated manually from time to time.

Setting up CRS names wrong doesn't affect the main functionality of a NAVTEX receiver.

Practice on NAVTEX receiver simulator

The Station Setup Pages (available in Setup Mode -> NAVTEX View -> 490 Names Page and Setup Mode -> NAVTEX View -> 518 Names Page) determine the names of stations displayed on station filter pages and in NAVTEX message headers.
The Station Name Selection setting allows the user to select between GPS and Manual station selection. To change the setting navigate to it and press RIGHT/LEFT navigation key.
  • If GPS is selected the NAVTEX receiver will select the CRS name nearest to the boat's current location, but within the same NAVAREA.
  • If Manual is selected, then the user can manually select the CRS name to be displayed for each CRS identifier. Setting up a wrong CRS name (for example Long Beach (Q) from NAVAREA XII instead of Split (Q) from NAVAREA III) will cause just displaying wrong CRS name in received messages from CRS identifier Q. To change the setting of any CRS identifier navigate to it and press RIGHT/LEFT navigation key.


Switching station Name Selection from GPS to Manual for 518 kHz frequency and setting up CRS identifier Q to Malin Head CG, R to Roma and U to none - after that message headers will change accordingly

The Station Database Setup (available in Setup Mode -> NAVTEX View -> 490 Names Page -> Station Database and Setup Mode -> NAVTEX View -> 518 Names Page -> Station Database) is used to change the database entries of CRSs. The Station Database Page is divided into two halves. The top half shows a scrolling list of all CRSs in the database. The bottom half shows details of the current CRS selected in the station list.

Editing an existing station entry:
Use the navigation pad to select the station you wish to edit (use RIGHT/LEFT navigation key to jump between station letters in the database). Press the EDIT softkey to edit the station details at the bottom of the display. You may navigate to any data item and after that change it using RIGHT/LEFT navigation key. When editing the station name, use the RIGHT/LEFT navigation key to change letters. Use the NEXT softkey to accept the current letter and move the cursor to the right. Use the BACKSPACE softkey to delete the current letter and move the cursor to the left. When editing the latitude and longitude fields, use NEXT softkey to select the Degrees, Minutes or Cardinal part of the position. Use RIGHT/LEFT navigation key to change the selected item. When you have finished entering the data, press the SAVE softkey to save and update the database or CANCEL softkey to abort the change.

Entering a new station:
Press the NEW softkey to create a new database entry. The rules for entering a new station are identical to those described above for editing an existing station. When you have finished entering the data, press SAVE or CANCEL softkey as required.

Deleting a station:
Use the navigation pad to select the station you wish to edit (use RIGHT/LEFT navigation key to jump between station letters in the database). Press the DELETE softkey. Confirm or cancel the deleting by pressing the CONFIRM or CANCEL softkey.


Changing the Miami CRS in 518 kHz station database and deleting Bushehr CRS from the same database


Last modified: Saturday, 25 April 2020, 7:50 PM