Uniden UM425 VHF DSC 사용자 설명서

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Capital letters (A through Z)

One blank space

Lower-case letters (a through z)

Numbers (0 through 9)

Punctuation (/ ‘ + -)

Punctuation (/ ‘ + -)

Numbers (0 through 9)

Lower-case letters (a through z)

One blank space

Capital letters (A through Z)

There are essentially four different types of DSC voice calls:

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.

Any time 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 in range of your 

radio.

Safety warnings (e.g., debris 

in the water) or an urgency 

situation.

For examples of how you might use different call types, see the diagram 

below:

(dotted circles)

(dotted circles)

UM425 VHF OM.indd   29

28/9/11   11:55:17 AM