Onwa Marine Electronics KV-300 - Manual (Page 20)

8. DIGITAL SELECTIVE CALLING (DSC)
8.1 Introduction
Digital Selective Calling is a semiautomatic method for controlling VHF, MF and
HF radio calls. It was also designed as part of the Global Marine
It is likely that DSC will eventually replace audio calls
on emergency frequencies and will be used to send urgent and routine radio-
transmitted maritime security information. This new service will allow crafts to
send/receive calls of an emergency, urgent, security, or routine nature to/from
vessels equipped with a DSC transceiver.
To avoid accidentally sending a distress call or a call sent incorrectly, contact
your vendor or local authorities for updates on DSC operating and emergency
procedures.
8.2 Mobile Marine Identification Service (MMSI)
Important! To send/receive DSC calls, the user must program his personal MMSI
code into the transceiver. This is a nine-digit number used by marine transceiv-
ers equipped for DSC digital selective calling. This number is used much like a
telephone number for contacting other, specific vessels.
DSC transmissions can be done only if you have been assigned the individ-
ual MMSI code and you entered it in your radio(otherwise the Distress/DSC
controls will be disabled).
Sending a distress call without founded reason is a criminal offence. Never use
this function unless you find yourself in a situation that merits asking for help.
Distress and
Safety system(GMDSS).
8.3 Navigating the DSC menu
KV-300 offers many DSC function .For this reason it was created.
Once inside a sub-menu, you can return at any time to the main menu by pressing
the PTT button.
To return to the radio mode, confirm EXIT in every menu.
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