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also been designated part of the Global Maritime Distress and Safety System
(GMDSS). It is planed that DSC will eventually replace aural watches on distress
frequencies and will be used to announce routine and urgent maritime safety
information broadcasts. This new service will also allow mariners to initiate or
receive distress, urgency, safety and routine calls to or from another vessel
equipped with a DSC transceiver.
5.1.1 MARITIME MOBILE SERVICE IDENTITY
An MMIS is a nine digit number used on Marine Transceiver capable of
using Digital Selective Calling (DSC). This number is used like a
telephone number to selectively call other vessels. Refer to section 6.12
(USER MMSI ENTRY).
5.1.2 HOW CAN I OBTAIN A MMSI ASSIGNMENT?
Contact your dealer.
WARNING
This radio is designed to generate a digital maritime distress and safety
call to facilitate search and rescue. To be effective as a safety device,
this equipment must be used only within communication range of a
shore–based VHF marine channel70 distress and safety watch system.
The range of signal may very but under normal conditions should be
approximately 20 nautical miles.
5.2 DSC CALL TYPES
Press the DSC/MENU key to pop up the menu for user to select the DSC
call type to send. Note that only four calls can be shown at any one time on
the screen.
Press + /–or rotate the CH knob scroll up and down the call types until the
cursor is positioned at the desired option.
Press the Ch knob the call types are:
Call Type Description
LAST CALL
Recall last call no matter what type of call received at
last.
NEW CALL Make a new call, by inputting the MMSI or pick up
from the list max 20
GROUP Sends transmissions that are only received by radios
that share a common group MMSI number, up to 3
group MMSI numbers can be stored and call.
ALL SHIPS Make an Urgency or Safety call to all ships.
CALL LOG
Allow a review of all stored Calls by number and time
of call. An individual call type can be placed to the
selected MMSI/NAME in the LOG. The call at the end
of the list is automatically erased. The earliest call
stored at the end of the list. There is 20 calls could be
stored
.
DISTRESS Log A
llow a review of all stored Distress calls by number
and time of call. The call at the end of the list is
automatically erased. The earliest call
stored at
the end of the list. There is also 10 calls could be
stored.
POS REQUEST
The option enables you to request GPS position
information from any vessel for which an MMSI
number is known, such request can pick up from
Buddy list or manual entry.
EXIT
quit the menu mode
DISTRESS A specific Distress key is used to make the
distress call.
The call send out the position and time information
from the input NMEA data along with your MMSI
number. This digital information lets other ships and
shore equipped with appropriate DSC equipment
know where you are and that you are in a distress
situation, except immediate help is needed, never use
the distress call.
