Cobra Electronics Marine Radio COBRA MARINE User Manual

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NothingComes Close to a Cobra
®
MaritimeMobile
ServiceIdentity(MMSI)
9
VHFMarineRadioProtocols
Maritime Mobile Service Identity (MMSI)
•
The MMSI Number Is Available In The U.S.A. From Any Of Two (2) Sources:
■
Sea Tow International: 1-631-765-3660 – www.seatow.com
■
BoatU.S.: 1-800-563-1536 – www.boatus.com/mmsi
An MMSI is a nine (9) digit number used on a marine radio capable of using digital
selective calling (DSC). It is used to selectively call other vessels or shore stations
and is similar t
o a telephone number.
For
your CobraMarine radio to operate in the DSC mode, you must enter your
maritime mobile service identity (MMSI) number. See page 41 for instructions
on how to enter it.
In Canada, Contact:
■
Industry Canada Spectrum Management Office (only available on the Internet):
http://strategis.ic.gc.ca/epic/internet/insmt-gst.nsf/vwGeneratedInterE/sf01742e.html
To Obtain An MMSI Number Out
side The U.S.A.:
Users
can obtain an MMSI from their country’s telecommunications authority
or ship registry. This may involve amending or obtaining a ship station license.
WARNING
This equipment is designed to generate a digital maritime distress and
safety signal to facilitate search and rescue. To be effective as a safety
device, this equipment must be used only within communication range
of a sh
ore-based VHF marine channel to distress and safety watch system.
The range of the signal may vary, but under normal conditions should be
approximately 20 nautical miles.
8
English
DigitalSelectiveCalling(DSC)
The vessel Corsair calling the vessel Vagabond:
Corsair: “Vagabond, this is Corsair (station license number call sign).”
Vagabond: “Corsair, this is Vagabond. Over.”
Corsair: “Vagabond go to working Channel 68. Over.”
Both parties switch over to the agreed upon working channel....
Corsair: “Vagabond I need to talk to you about... Over.”
Vagabond: “Corsair in answer to your question about... Over.”
Corsair: “Vagabond, thanks for the information about... (call sign and out).”
After each transmission, say “OVER” and release the microphone Push to Talk (PTT)
button. This confirms that the transmission has ended. When all communication with
the other vessel is totally completed, end the message by stating your call sign and
the word “OUT.” Remember, it is not necessary to state you
r call sign with each
transmission, only at the beginning and end of the message.
N
OTE
F
or best sound quality at the shore station or other vessel receiving your call,
hold the microphone/speaker at least 2 in. (51 mm) from your mouth and
slightly off to one (1) side. Speak in a normal tone of voice.
Digital Selective Calling (DSC)
•
Digital selective calling is a semi-automated system for establishing a radio
call. It has been designed by the International Maritime Organization (IMO)
as an international standard for VHF, MF, and HF calls and is part of the
Global Maritime Distress and Safety System (GMDSS).
DSC will eventually replace aural (listening) watches on distress frequencies
and will be
used to announce routine and urgent maritime safety information
broadcasts.
Until DSC is fully implemented, it is still necessary to maintain a
listening watch on Channel 16.
The DSC system allows mariners to instantly send a distress call with GPS
position coordinates (requires a GPS receiver to be connected to the radio)
to the Coast Guard and other vessels within range of the transmission.
DSC also
allows mariners to initiate and receive distress, urgent, safety,
routine,
position request, position send, and group calls between vessels
equipped with DSC capable radios.
VHFMarineRadioProtocols
ForExample
F45D_General_Eng:8186-F55_General-Eng 11/23/10 10:46 AM Page 8

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