Garmin VHF 110 Series, Owner'S Manual

Before you can use the foghorn, you must provide and install a 

hailer horn (optional) on the deck or tower of your boat. For 

more information, see the 

VHF 110/210 AIS Series Installation 

Instructions

.

The foghorn is part of the public address system of your radio. 

You can sound the foghorn through a hailer horn or an external 

speaker. Your radio can sound the horn automatically using 

standard patterns, or you can sound the horn manually. When 

you manually operate the foghorn, sounds received through the 

horn can be heard through the radio speaker between 

soundings.

Sounding the Foghorn Automatically

1

Select 

PA

 > 

FOG

 > 

AUTO

.

2

Select a foghorn-type option.
The radio alternates between sounding the pattern of tones 

or rings and receiving radio broadcasts.

3

Turn the 

SELECT

 dial to adjust the volume of the horn 

(optional).

Sounding the Foghorn Manually

NOTE: 

When you sound the horn manually, the radio does not 

receive broadcasts between horn soundings.

1

Select 

PA

 > 

FOG

 > 

MANUAL

.

Sounds are received through the horn and heard through the 

radio speaker.

2

Hold 

PTT

.

NOTE: 

The horn stops sounding when you release PTT.

3

Turn the 

SELECT

 dial to adjust the volume of the horn 

(optional).

Adjusting the Sound Frequency of the Foghorn

You can increase or decrease the sound frequency of the 

foghorn. The pitch of the tone rises with an increase in 

frequency, and falls with a decrease in frequency. The minimum 

setting is 200 Hz, and the maximum setting is 850 Hz. The 

default setting is 350 Hz. Regulations dictate the correct 

frequency of foghorns, which correlate with the size of your 

vessel.

1

Select 

MENU

 > 

SYSTEM

 > 

FOG FREQUENCY

.

2

Turn the 

SELECT

 dial to adjust the frequency in 50 Hz 

increments.

3

Select 

ACCEPT

.

Entering Text

You may need to enter a name, a number, or other text on the 

radio.

1

From a number or text field, turn the 

SELECT

 dial to change 

the number, letter, or character.

2

Press the 

SELECT

 dial to accept the number, letter, or 

character and move to the next space in the sequence.

3

Repeat this process for each number, letter, or character.

NOTE: 

You can select 

 to return to the previous entry in 

the sequence.

4

Select 

ACCEPT

.

NOAA

®

 Weather Broadcasts and Alerts

NOTE: 

This feature is not available on all radio models.

NOAA weather broadcasts on the weather (WX) channels are 

available only in the USA and certain regions in Canada.
Compatible radio models are programmed with 10 WX channels 

to monitor weather broadcasts from the National Oceanic and 

Atmospheric Organization (NOAA). WX channels are listen-only 

channels that broadcast in a continuous loop and are updated 

regularly. NOAA broadcasting information is regional and 

relevant to your broadcast area.

Tuning Weather Broadcasts

1

From the home screen, press the 

SELECT

 dial.

WX appears on the screen.

2

Turn the 

SELECT

 dial to change the weather channel.

Enabling and Disabling Weather Alerts

You can enable weather (WX) alerts to sound when you are 

using standard radio channels.

1

When tuning weather broadcasts, select 

ALERT

 to enable or 

disable weather alerts.

 indicates that weather alerts are enabled.

2

Select 

EXIT

.

The radio returns to normal operation while continuing to 

monitor weather alerts.

Digital Selective Calling

Digital Selective Calling

NOTE: 

Before you can use DSC capabilities, you must enter a 

Mobile Marine Safety Identity (MMSI) number (

Entering Your 

MMSI Number

, page 4

). An MMSI number identifies each 

DSC radio, like a telephone number.
Digital Selective Calling (DSC) is a key component of the Global 

Maritime Distress and Safety System (GMDSS). DSC enables 

VHF radios to place and receive digital calls directly with other 

vessels and shore stations, including the USA and Canadian 

Coast Guards. Your radio includes full Class-D DSC capabilities.
If you have a GPS device connected to the transceiver, your 

latitude, longitude, and the current time are transmitted when 

you send a distress call or other type of DSC call. If you enter 

your position information manually, your latitude, longitude, and 

time of entry are transmitted with the call. Transmitting your 

location automatically speeds help in an emergency situation.
Channel 70 is reserved exclusively for DSC calls, and your 

device uses a dedicated receiver to maintain a constant watch 

on Channel 70. You do not need to change the channel to make 

a DSC call. Your device changes to Channel 70 automatically to 

transmit a DSC call. Your radio sends the DSC data over 

Channel 70 in less than one second, and then tunes to an 

appropriate channel for voice communications.

 appears on the device screen when you have an incoming or 

missed DSC call.

NOTE: 

The device disables DSC automatically when you turn 

on ATIS (

Automatic Transmitter Identification System

, 

page 8

).

Entering Your MMSI Number

NOTICE

You can enter your MMSI number only once. If you must change 

your MMSI number after entering it, you must take your radio to 

your Garmin

®

 dealer for reprogramming.

The Mobile Marine Safety Identity (MMSI) number is a nine-digit 

code that acts as a DSC self-identification number, and it is 

required to use the DSC capabilities of your radio. You can 

obtain an MMSI number from the telecommunications authority 

or ship registry for your country. In the USA, you can obtain an 

MMSI number from these sources:
• Federal Communications Commission (FCC): assignments 

are recognized internationally

• BoatU.S.

®

, Sea Tow

®

, or United States Power Squadrons

®

: 

assignments are for USA waters only.

4

NOAA

®

 Weather Broadcasts and Alerts