Operation Manual

5.2. Selection of Filter for NAVTEX Reception

From version 3. onwards, the FMD55 has a filter with a

centre frequency of 1500 kHz and a band width of

approx. 500 Hz in place of the 800 Hz filter. Since NAVTEX is

broadcast world-wide with a shift of +/- 85 Hz, this filter can

be used for NAVTEX transmission. This is recommendable

when in the NAVTEX frequency is disturbed by other

stations in your sailing area.

Basically for NAVTEX transmissions, the 2.2 kHz has been

selected. The 500 Hz filter can be switched on or off as

follows:

As in 5.1. enter the <FREQUENCY> menu and by pressing:

x the <YES> key you can switch on the filter

x the <NO> key you can switch the filter off.

Which ever filter is selected, it will be shown as a footnote

on the print out of a NAVTEX message or on the print out

of the NAVTEX status.

5.3. Selection of Transmitting Station

In the <NAVTEX> menu

x press No. <2> to enter <STATION> mode

The stations are pre-fixed with the letters A to Z. Station

messages desired are given capitol letters and stations to

be suppressed with small letters. To do this use the

following cursors:

To select the stations required.