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E-19West Marine VHF460 Radio Owner’s Manual
screen lets you add a new MMSI or edit/delete an existing MMSI.
4. To enter a new MMSI, select [NEW] and follow the procedures for entering an
individual MMSI number.
5. To edit an existing MMSI number/name, select the entry and press GPS/ENT H/M/L.
6. Select
Edit
and press GPS/ENT H/M/L. The MMSI number and name display. Edit
accordingly and press GPS/ENT H/M/L when complete. A conrmation screen
displays.
7. Press GPS/ENT H/M/L to accept the edits or CLR/SCAN to cancel. The radio returns
to the
DSC Directory
Edit
screen.
8. To delete the directory entry, select
Delete
.
When you are satised with the directory list, press CLR/SCAN to close the menu
screen.
There are essentially four different types of DSC voice calls:
Call type What it does When to use it
Distress Alerts all stations that you need assistance and
sends them your current position.
In an emergency only.
Individual Calls a single station using the User MMSI. When you want to talk to another station.
Group Calls all the stations that have the same Group
MMSI as yours.
Any time you want to talk with the whole
group you are traveling with at the
same time.
All Ships Calls all stations within range of your radio. Safety warnings (e.g., debris in the
water) or any urgent situation.
Suppose you are coordinating safety for a sailboat race. Before the race starts, you instruct
all the racers to enter your group MMSI number into their radios. During the race:
x Throughout the race, you use group calling to update the racers on the time, race
status, and any course corrections.
x A power boat full of spectators comes too close to the race path. You use individual
calling to contact the power boat and advise them to stay clear of the race.
x You see a rowboat entering the area, but since it doesn’t have a radio, you can’t
communicate with the rowboat. You use all ships calling to alert all the other boats in
the area of the possible danger.