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Page 37GX3500S
11.2 MARITIME MOBILE SERVICE IDENTITY (MMSI)
11.2.1 What is an MMSI?
An MMSI is a nine digit number used on Marine Transceivers capable of using
Digital Selective Calling (DSC). This number is used like a telephone number to
selectively call other vessels.
THIS NUMBER MUST BE PROGRAMMED INTO THE RADIO TO OPERATE
THE GX3500S DSC FUCTIONS.
How can I obtain an MMSI assignment?
Boat US offers online registration of a MMSI. Visit www.boatus.com/mmsi
11.2.2 Programming the MMSI
WARNING
User MMSI can be input only twice. If the user tries to input an MMSI
more than twice, the radio will show the display on
the right. If the user needs to change the MMSI
more than twice, the transceiver will have to be
sent to Factory Service. Refer to the section “14.2.
FACTORY SERVICE.”
1. Press and hold down the
[
CALL
(
MENU
)]
key until
the “Radio Setup” menu appears.
2. Turn the CHANNEL selector knob to the left to se-
lect “DSC Setup” menu.
3. Press the
[
ENT
]
key, then select “User MMSI” with
the CHANNEL selector knob.
4. Press the
[
ENT
]
key. The “User MMSI” number will
appear, and the first digit will be flashing.
5. Enter the your MMSI (up to nine digits) from the key-
pad.
6. Press and hold the
[
ENT
]
key to store the number in
memory.
7. To exit this menu and return to radio operation mode
press the
[
16/9
]
key.