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E-18 Uniden MHS135DSC Radio Owner’s Manual
to the
DSC Directory
Edit
screen.
8. To delete the directory entry, select
Delete
.
9. 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 MMSL. When you want to talk to another
station.
Group Calls all the stations that have the same
Group MMSL as yours.
Any time you want 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.