FCC ID: K6630283X3S
IC ID: 511B-30283X3S
GX5000S / GX5500S Operating Manual
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
GX5000S/GX5500S DSC FUNCTIONS.
How can I obtain an MMSI assignment?
Please contact the Radio Licensing Authority for your country for information on how to
obtain an MMSI number.
11.2.2 Programming the MMSI
WARNING
A user MMSI can be input only once. If the user tries to input an MMSI more than once the
radio will show the display on the right. Therefore please be careful not to input the
incorrect MMSI number. If the user needs to change the MMSI number after it has been
entered, the radio will have to be returned 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 select “DSC Setup” menu.
3. Press the [ENT] key, then select “User MMSI” with the CHANNEL selector knob.
4. Press the [ENT] key. The display will show a series of dashes or the last MMSI
number if programmed.
5. Turn the CHANNEL selector knob or press the [UP(p)] / [DOWN(q)] key on the
microphone to select the first number of your MMSI, then press the [ENT] key to step
to the next number.
6. Repeat step 5 to set your MMSI (up to nine digits).
7. When finished programming the number, press and hold the [ENT] key until the
confirmation message appears.
8. Press the [ENT] key to store the number in memory and return to radio operation
mode.
11.3 DSC DISTRESS ALERT
The GX5000S/GX5500S is capable of transmitting and receiving DSC Distress messages
to all DSC radios. The GX5000S/GX5500S may be connected to a GPS to also transmit
the Latitude and Longitude of the vessel.
Vertex Standard Co., Ltd.
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