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Garmin GPSMAP3005C Manual

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100 GPSMAP 3005C Owner’s Manual
APPendIX > dIgItAl selectIve cAllIng (dsc)
Any time a vessel receives a DSC call, the vessel can store that location and
quickly navigate to that position using a Go To. This makes DSC a time-saver,
especially in an emergency situation. To use DSC, users must rst register their
VHF radio with the FCC and receive a Maritime Mobile Service Identity (MMSI)
number.
What is a Maritime Mobile Service Identity (Maritime Mobile Service Identity (MMSI)?
Maritime Mobile Service Identity (MMSI) allows a VHF radio to act like a
phone. To make a “call” on a phone, you rst need a phone number to dial. The
9-digit MMSI number acts like a phone number when used in a position report
and as a unique identier to the Coast Guard when used in an emergency distress
call. To obtain a Maritime Mobile Service Identity (MMSI) number, users must
register their VHF radio with the FCC (Form 605). Garmin does not supply this
number!
How Are MMSI Assignments Obtained?
Non-commercial users (recreational users who remain in domestic waters and
only carry VHF, EPIRB (Emergency Position Indicating Radio Beacons, and
Radar)) are not required to have a FCC ship station license. The FCC and Coast
Guard have authorized some second and third-party vendors to assign MMSI
numbers. This service is limited to registering recreational vessels only. To
receive information on how to obtain a recreational MMSI number, contact:
http://www.navcen.uscg.gov/marcomms/gmdss/mmsi.htm or
http://wireless.fcc.gov/marine/.
Non-Federal Users in the United States
Commercial users, or those who travel outside the U.S.A. or Canada, must apply
for a ship station license, or an amendment to a ship station license. To nd out if
you require a Ship Station license, visit: http://wireless.fcc.gov/marine/fctsht14.
html. If your vessel requires licensing by the FCC, you can obtain a MMSI during
the application/licensing process when you le FCC Forms 159 and 605.
Federal Users in the United States
Federal users can obtain MMSI assignments from their agency radio spectrum
management ofce. These procedures are currently under review by the NTIA
(National Telecommunications and Information Administration).
Users Outside the United States
Users can obtain an MMSI assignment from their telecommunications authority
or ship registry, often by obtaining or amending their ship station license.
Users in Canada
Industry Canada is responsible for assigning MMSI numbers to commercial and
recreational vessels. Information is available at the following Web site:
http://www.ccg-gcc.gc.ca/mcts-sctm/docs/mmsi/MMSI_e.htm..
For more information regarding MMSIs, visit: www.navcen.uscg.gov/marcomms/
gmdss/mmsi.htm.
How Can Garmin Help You with DSC?
To receive Distress Calls or Position Reports, you must have a DSC-equipped
chartplotter as well as a VHF radio with DSC support. During normal, non-
emergency Position Report communication, Channel 70 (156.525 MHz) has been
set aside as the VHF/DSC digital call channel.
For a Distress Call, a mariner presses the MayDay button on the VHF radio.
The call transmits on an emergency channel with the MMSI number attached to
the call (if you have DSC support). Any DSC-equipped mariner (on sea or land)
within range can receive the call.
appendIX
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