HX600S
Page 28
7.10 DIGITAL SELECTIVE CALLING
7.10.1 GENERAL
7.10.1.1 Digital Selective Calling (DSC)
Digital Selective Calling is a semi-automated method of establishing a radio
call; it has been designated by the International Maritime Organization (IMO)
as an international standard for establishing VHF, MF and HF radio calls. It
had also been designated as part of the Global Maritime Distress and Safety
System (GMDSS). It is planned that DSC will eventually replace aural watches
on distress frequencies and will be used to announce routine and urgent
maritime safety information broadcasts.
The
HX600S
has a DSC Distress feature that allows mariners to instantly
transmit a VHF Marine distress call with GPS position (when connected to
the transceiver) to the US Coast Guard and other vessels within range of the
transmission.
7.10.1.2 Maritime Mobile Service Identity (MMSI)
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 by the
HX600S
when a Marine DSC Distress call is transmitted. This number is registered
with the USCG. Refer to section
10 “MENU (“SET”) MODE”(MMSI REG)
.
NOTE
: An MMSI must be programmed into the
HX600S
before the DSC
Distress function will operate. If you have a fixed mounted DSC VHF and
already have a MMSI, this MMSI should be programmed into the
HX600S
.
How can I obtain a MMSI assignment?
Currently there are two companies that offer MMSI numbers:
Boat US at (800) 563-1539 or visit the web site http://www.boatus.com/mmsi/.
Seatow at (631) 765-3660 or visit the web site
http://www.seatow.com/
mmsiinfo.htm
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 channel 70 distress and safety watch system.
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