Garmin 2006 Manuale Proprietario

A

PPENDIX

 > 

D

IGITAL

 S

ELECTIVE

 C

ALLING

 (DSC)

The GPSMAP 3006C/3010C is capable of receiving WAAS satellite signals. 

Effective use of the WAAS satellite signal may be limited by your geographic 

location in relation to those satellites, now in developmental service. WAAS 

satellite signal reception requires an absolute clear view of the sky and works best 

when there are no nearby obstructions such as buildings or mountains. 
WAAS satellites are numbered 33 or higher when viewing the sky view on your 

GPSMAP 3006C/3010C. Initial reception of the WAAS signal may take up to 

15-20 minutes, then 1–2 minutes afterwards. When WAAS differential correction 

has been received for GPS satellites (numbers 32 or below), a “D” appears in 

the signal bar of the sky view and “Ready For Navigation with WAAS” appears 

in the Status field. To learn more about the WAAS system, its satellite locations 

and current state of development, visit the FAA web site (

Because WAAS requires CPU resources of the GPSMAP 3006C/3010C to search 

for and track the satellites, you can disable the WAAS feature to improve unit 

performance if WAAS reception is not available in your area.

1.  On the 

GPS tab, highlight the Setup sub tab.

2.  Use the 

ROCKER to highlight the WAAS field, and press ENTER.

3.  Highlight 

On or Off, and press ENTER. 

When your GPSMAP 3006C/3010C 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 3006C/3010C & GPS 17 

Installation Instructions. 

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.