Uniden UM425 Specifications download pdf (Page 29)

Using Digital Selective Calling (DSC) Features

CHANNEL UP button CHANNEL DOWN button

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)

Making DSC Calls

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.

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.

All ships call

Group

call

Individual

call

All ships call

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

below:

(dotted circles)

UM425 VHF OM.indd 29 28/9/11 11:55:17 AM

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 67 68

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Uniden UM425 Specifications Page 29