Bedienungsanleitung Garmin GPSMAP 2106 (Seite 93 von 106) (Englisch)

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GPSMAP 2106/2110 Owner’s Manual 85

APPENDIX > DIGITAL SELECTIVE CALLING (DSC)

Digital Selective Calling (DSC)

When your GPSMAP 2106/2110 is connected to a VHF radio with DSC support,

the GPS unit displays a Call List, Log, and a Directory to store incoming

information received from another user’s DSC capable VHF/GPS combination.

Basic wiring is required for the Garmin unit and VHF radio to send and receive

NMEA data from each other. See the GPSMAP 2106/2110 & GPS 17 Installation

Instructions.

What is DSC?

Digital Selective Calling (DSC) uses marine VHF radio and Global Positioning

System (GPS) technologies to transmit and receive location information. DSC

is used by mariners to assist them in two major areas: distress calls and position

reporting.

A non-emergency DSC

position report allows mariners to exchange and display

the positions of one another. When a DSC position is received, the mariner can

choose to create a waypoint or show the received position on an electronic map.

An emergency DSC distress call allows a vessel in trouble to transmit a

substantial amount of information in a single transmission or “call” without

the need for voice communication. When any nearby rescuer receives the DSC

signal, an alarm sounds, and they immediately receive the position of the caller.

The rescuer can then choose to navigate (Go To) the caller’s position to assist

or forward the call on to the Coast Guard. When the Coast Guard receives the

call, they can immediately access the caller’s information (such as who they are

and the type of vessel) in their database while they are in transit to the caller’s

location.

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 ﬁrst register their

VHF radio with the FCC and receive a Maritime Mobile Service Identity (MMSI)

number.

What is a 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 ﬁrst 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 identiﬁer to the Coast Guard when used in an emergency distress

call. To obtain a Maritime Mobile Service Identity (MMSI) number, users must

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, visit

http://www.uscg.mil/rescue21/links/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 ﬁnd 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 ﬁle FCC Forms 159 and 605.

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Garmin GPSMAP 2106 Seite 93

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