Garmin GARVHF3 Fixed Mount Class D DSC VHF Marine Radio User Manual 1

Garmin International Inc Fixed Mount Class D DSC VHF Marine Radio 1

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User Manual 1

VHF 300 Series

owner’s manual

Draft

Garmin International, Inc.

1200 East 151

Street,

Olathe, Kansas 66062, USA

Tel. (913) 397.8200 or

(800) 800.1020

Fax (913) 397.8282

Garmin (Europe) Ltd.

Liberty House

Hounsdown Business Park,

Southampton, Hampshire, SO40 9LR UK

Tel. +44 (0) 870.8501241 (outside the UK)

0808 2380000 (within the UK)

Fax +44 (0) 870.8501251

Garmin Corporation

No. 68, Jangshu 2

Road,

Shijr, Taipei County, Taiwan

Tel. 886/2.2642.9199

Fax 886/2.2642.9099

July 2009 Part Number 190-01098-00 Rev. B Printed in China

transmitted, disseminated, downloaded or stored in any storage medium, for any purpose without the express

prior written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual

onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any

revision hereto, provided that such electronic or printed copy of this manual must contain the complete text of

this copyright notice and provided further that any unauthorized commercial distribution of this manual or any

revision hereto is strictly prohibited.

Information in this document is subject to change without notice. Garmin reserves the right to change or improve

its products and to make changes in the content without obligation to notify any person or organization of such

changes or improvements. Visit the Garmin Web site (www.garmin.com) for current updates and supplemental

information concerning the use and operation of this and other Garmin products.

Garmin

and the Garmin logo are trademarks of Garmin Ltd. or its subsidiaries, registered in the USA and other

countries. GHS

™

is a trademark of Garmin Ltd. or its subsidiaries. These trademarks may not be used without the

express permission of Garmin.

United States Power Squadrons

is a registered trademark of United States Power Squadrons. NMEA 2000

and

the NMEA 2000 logo are registered trademarks of the National Maritime Electronics Association.

CE Notication

CE Notied Body number (0168) valid for the VHF 100i/VHF 200i/VHF 300i/VHF 300i AIS only.

0168

Draft

VHF 300 Series Owner’s Manual i

Introduction

The VHF 300 series radios equip you with the ability to communicate on all International,

USA, and Canadian marine channels, as well as preset private channels. They also allow

monitoring of ten WX (weather) channels.

NOTE: The International frequency band is the only band available for the VHF 300i and

the VHF 300i AIS, unless you have the other bands enabled by an Garmin

authorized

dealer.

The VHF 300 series radios have many enhanced features, including those listed in the

following table.

VHF 300 VHF 300i VHF 300

AIS

VHF 300i

AIS

North American usage ● ●

International usage ● ●

Multilingual user interface: English, French,

Italian, German, and Spanish ● ● ● ●

Receives NOAA weather alerts ● ●

Automatic Transmitter Identication System

(ATIS) support ● ●

Automatic Identication System (AIS)

receiver ● ●

Full Class D Digital Selective Calling (DSC) ● ● ● ●

Private channel customization

(pre-set by your Garmin dealer) ● ●

Auto power on ● ● ● ●

Position tracking to track up to three other

boats ● ● ● ●

Transmits position requests ● ● ● ●

Local receiver mode to improve receiver

performance in busy port environments ● ● ● ●

Up to 25 watts of transmit power, selectable

between 1 watt and 25 watts ● ● ● ●

Dedicated key for easy, one-touch access

to Channels 16/9 ●Channel 16

only ●Channel 16

only

NMEA 0183 interface capabilities ● ● ● ●

NMEA 2000

interface capabilities ● ● ● ●

Additional capabilities with NMEA 2000

compatible Garmin chartplotters and

Garmin autopilot system

● ● ● ●

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ii VHF 300 Series Owner’s Manual

Introduction

VHF 300 VHF 300i VHF 300

AIS

VHF 300i

AIS

Relocatable speaker and microphone ● ● ● ●

Supports Garmin GHS

™

full-function

handsets ● ● ● ●

Hailer and foghorn output at 30 watts with

automatic and manual foghorn signals and

adjustable, base-fog frequencies

● ● ● ●

Two-way hailer functionality for listening

back when connected to a compatible horn

speaker

● ● ● ●

Intercom capabilities ● ● ● ●

Manual Conventions

In this manual, when you are instructed to select an item using the Channel knob, turn the

channel knob to highlight the item, and then press the Channel knob to select the item.

Small arrows (>) in the text indicate that you should use the Channel knob to select

each item in order. For example, if the text indicates “select COMMUNICATIONS >

PROTOCOL,” you should complete these steps:

1. Turn the Channel knob to highlight COMMUNICATIONS, and then press the Channel

knob to select COMMUNICATIONS.

2. Turn the Channel knob to highlight PROTOCOL, and then press the Channel knob to

select PROTOCOL.

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VHF 300 Series Owner’s Manual iii

Introduction

Table of Contents

Introduction ...............................................................................................................i

Manual Conventions ............................................................................................................ ii

Getting Started .........................................................................................................1

Garmin GHS Series Handsets ............................................................................................. 1

Garmin GHS Series Handset Display .................................................................................. 2

Tips ...................................................................................................................................... 3

Basic Operation .......................................................................................................4

Turning the Radio On and Off .............................................................................................. 4

Adjusting the Volume ........................................................................................................... 4

Adjusting the Squelch .......................................................................................................... 4

Selecting Channels .............................................................................................................. 4

Transmitting with the Radio.................................................................................................. 4

Bypassing the LO (1 W) Transmission Power Setting ......................................................... 5

Scanning and Saving Channels ........................................................................................... 5

Repeating the Last Received Communication ..................................................................... 6

Monitoring Multiple Channels ............................................................................................... 6

Reprogramming the Second-Priority Channel ..................................................................... 7

Using 16/9 Mode .................................................................................................................. 7

Switching Between 1 W and 25 W Transmitting Modes ...................................................... 8

Adjusting the Local/Distant Receiving Sensitivity ................................................................ 8

Using the Intercom ............................................................................................................... 9

Using the Hailer ................................................................................................................... 9

Using the Foghorn ............................................................................................................. 10

Listening to NOAA Weather Broadcasts and Enabling Weather Alerts ............................. 11

Automatic Transmitter Identication System ...................................................................... 12

Digital Selective Calling ........................................................................................14

Entering Your MMSI Number .............................................................................................14

Viewing Your MMSI Number .............................................................................................. 15

DSC Distress Calls ............................................................................................................ 15

Placing Calls ...................................................................................................................... 18

Receiving Calls .................................................................................................................. 20

Position Tracking ................................................................................................................ 21

Working with the Call Logs ................................................................................................ 23

Using the Directory ............................................................................................................ 25

Adding and Modifying Group Entries ................................................................................. 26

Conguring DSC Settings .................................................................................................. 26

Sending Voicemail .............................................................................................................28

Automatic Identication System ......................................................................................... 28

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iv VHF 300 Series Owner’s Manual

Introduction

Advanced Operation .............................................................................................29

NMEA 0183 and NMEA 2000 ............................................................................................. 29

Modifying the Operating Settings ....................................................................................... 31

Appendix ................................................................................................................35

Alarms and Messages ....................................................................................................... 35

Channel Lists ..................................................................................................................... 36

Specications ..................................................................................................................... 46

Caring for the Unit .............................................................................................................. 50

Index .......................................................................................................................51

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VHF 300 Series Owner’s Manual 1

Getting Started

Garmin GHS Series Handsets

Use a Garmin GHS handset to operate all VHF 300 model radios.

PTT (Push-to-talk)—press to exit the current

menu and return to the Home screen to begin

broadcasting.

DISTRESS—lift the spring-loaded door and

press the DISTRESS key to start a Digital

Selective Calling (DSC) distress call if you

have programmed your radio with an MMSI

number.

Channel—rotate to change the channel on the

radio, or press to select a menu item. When

on the Home screen, press to access WX

(weather) channels (North American models

only).

CLEAR—press to return to the previous screen when you are in the menu options. This key

also cancels or mutes an incoming DSC call.

DSC—press to display a menu of DSC options. Press again to return to the Home screen.

This key only works if you have programmed an MMSI number into the radio (page 14).

16/9 (North American models) or 16+ (International models)—press and release to toggle

between Channel 16, your second-priority channel, and your original channel.

HI/LO—press to select between local and distant receive settings or to bypass 1 W

transmission power for some channels.

MENU—press to display a menu of conguration options. Press again to return to the

Home screen.

Volume/Squelch—press to toggle the function of the Channel knob to adjust the volume

and squelch levels.

PTT

Channel

CLEAR

DSC

16/9 or 16+

HI/LO

Volume/

Squelch

USA

DISTRESS

REPEAT PA SCAN

“‰°Š‹.Œ‘’’ƒ

ˆ‰Š°‹Œ.‘’“’†

ˆ‰:‹ŒPM UTC

W25

DISTRESS

PTT

Channel

CLEAR

DSC

16/9 or 16+

HI/LO

Volume/

Squelch

USA

DISTRESS

REPEAT PA SCAN

“‰°Š‹.Œ‘’’ƒ

ˆ‰Š°‹Œ.‘’“’†

ˆ‰:‹ŒPM UTC

W25

DISTRESS

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2 VHF 300 Series Owner’s Manual

Getting Started

Garmin GHS Series Handset Display

The Home screen is the most-viewed screen in the system. It displays all of your current

information, such as the current channel, the frequency band, and the channel name.

Frequency band

Latitude

Time

Speed Over Ground/

Course Over Ground

System-status

icons

Channel Longitude

Soft keys

USA

DISTRESS

REPEAT PA SCAN

“‰°Š‹.Œ‘’’ƒ

ˆ‰Š°‹Œ.‘’“’†

ˆ‰:‹Œ UTC

””MPH ˆ’”°T

–

W25

ATIS

LOC

Channel—current working channel.

Frequency band—current frequency band: International, Canadian, or USA.

Latitude, Longitude, and Time—current latitude, longitude, and time are displayed if

the transceiver is connected to a GPS device. If the transceiver is not connected to a GPS

device, you can manually enter the position and the time that you entered the position data.

Speed Over Ground (SOG)/Course Over Ground (COG)—current SOG or COG is

displayed if the transceiver is connected to a GPS device.

Soft keys—used to select items. The function of these keys changes depending on what you

are doing.

System-status icons—see the following table.

Battery status

Squelch level is

broken by reception

of an incoming signal

Transmitting

W25

Transmitting

at 25 watts

Transmitting at

1 watt

Saved channel

LOC

Receiver mode for

areas with radio frequency

interference (such as harbors)

ATIS

enabled

Position

tracking enabled

Incoming or

missed DSC call

Outgoing voicemail Auto channel

changing disabled

Weather alert External GPS

connected

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VHF 300 Series Owner’s Manual 3

Getting Started

Tips

Keep the following tips in mind when using your radio or handset:

Press and release the PTT key at any time during a series of steps to return to the Home

screen.

Press the CLEAR key to view the previous screen.

Select OK to save your changes and return to the Home screen.

Select ab when entering data to return to a previous character.

•

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4 VHF 300 Series Owner’s Manual

Basic Operation

Turning the Radio On and Off

IMPORTANT: To use the DSC capabilities of your radio, you must rst enter an MMSI

number. See page 14 for more information.

To turn on the radio, press and hold the 16/9 key (North American models) or 16+ key

(International models). If you have not entered a Mobile Maritime Safety Identity (MMSI)

number, you must press the CLEAR key to access the Home screen. To turn off the radio,

press and hold the 16/9 key or the 16+ key.

TIP: For information on enabling auto power-on, see page 31.

Adjusting the Volume

TIP: To set the appropriate volume level, rst turn the squelch level to off, and then adjust

the volume. See below for more information on adjusting the squelch level.

1. Press the VOL/SQL key until the screen displays “CURRENT VOLUME.”

2. Turn the Channel knob on the handset to adjust the level.

Adjusting the Squelch

1. Press the VOL/SQL key until the screen displays “CURRENT SQUELCH.”

2. When receiving, rotate the Volume knob counterclockwise until you hear audio.

3. Rotate the Volume knob clockwise until there is no background noise.

Selecting Channels

Turn the Channel knob clockwise or counterclockwise to change channels. See page 36 for

lists of International, Canadian, and USA channels.

Transmitting with the Radio

1. Select the appropriate channel.

2. Check to ensure that the channel is clear before transmitting. The Federal

Communications Commission (FCC) and international regulations require that you not

obstruct the communications of others.

3. Press the PTT key on the handset to transmit on the current channel. The

icon is

displayed at the top of the screen.

4. Speak your message and release the PTT key.

NOTE: Five minutes is the maximum amount of time for transmission. After you have

pressed PTT key for ve minutes, PTT is disabled until you release the PTT key.

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VHF 300 Series Owner’s Manual 5

Basic Operation

Bypassing the LO (1 W) Transmission Power Setting

In the USA frequency band, transmissions on Channels 13 and 67 are required to be low-

power (1 watt) by default. You can bypass this power setting by pressing the 25W soft key

during transmission.

1. If you are on USA Channels 13 or 67, when you press the PTT key, the screen displays

a message to press 25W to bypass the 1 W transmission requirement.

2. Press the 25W soft key to broadcast on HI. The radio bypasses the 1 W transmission

requirement until you release the PTT key.

Scanning and Saving Channels

IMPORTANT: If you turn on ATIS, the radio cannot scan or save channels. See page 12.

Scanning All Channels

When you scan channels, the radio searches for channels that are broadcasting. If a channel

is broadcasting, the radio pauses on that channel until the broadcast stops. After four

seconds of inactivity on the channel, the radio resumes scanning.

1. Select SCAN > ALL.

2. Choose from the following options:

SKIP—this option is displayed if active channels are detected. When you select

this option, the system resumes the scan and does not include that channel in

subsequent passes.

+CH16—Channel 16 is scanned every other channel (for example: 21, 16, 22, 16,

and so on). “ALL SCAN +CH16” is displayed on the screen.

-CH16—Channel 16 is scanned in its normal order (for example, 14, 15, 16, 17, and

so on). “ALL SCAN” is displayed on the screen.

EXIT—returns you to Home screen. The system ends the current scan and continues

to receive on the channel where you ended the scan.

Saving Channels

You can save any channel other than the WX (weather) channels to the transceiver memory.

You can scan your saved channels separately from scanning all of the channels that radio

receives. There is no limit to the number of channels you can save.

To save a channel:

1. Select SCAN.

2. Turn the Channel knob to access different channels.

3. To save a channel, select SAV CH. A star on the top of the screen denotes a saved

channel.

•

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6 VHF 300 Series Owner’s Manual

Basic Operation

To remove the saved status from a channel:

1. Select SCAN.

2. Turn the Channel knob to access different channels.

3. Select SAV CH.

Scanning Saved Channels

1. Select SCAN.

2. Select SAVED.

NOTE: This scan does not include Channel 16 unless you saved Channel 16 to memory.

However, you can select +CH16 to scan Channel 16 every other channel (for example: 21,

16, 32, 16). When this setting is active, the soft key displays -16. Select -CH16 to scan your

saved channels in their normal order (for example, 08, 10, 11, 14).

Repeating the Last Received Communication

When repeat is turned on, the radio records up to the last 90 seconds of the last received

transmission. When repeat is turned off, recording is disabled; the radio plays back the last

saved transmission from when repeat was on. During playback, the radio does not receive

transmissions on the current channel.

The radio will not save the beginning (less than one second) of each received transmission.

This prevents intermittent RF noise from overriding audio transmissions that have been

received and saved

To turn repeat on or off:

1. Select REPEAT. The radio plays back up to the last 90 seconds of the last received

transmission.

2. Select ON or OFF.

To repeat the last received transmission:

1. Select REPEAT. The radio plays back up to the last 90 seconds of the last received

transmission.

2. Select REPEAT again to play the message from the beginning.

Monitoring Multiple Channels

IMPORTANT: The radio disables multiple-channel monitoring (Dual watch and Tri watch)

if you turn on ATIS. See page 12.

Use the Watch feature to monitor priority channels and the currently selected channel for

broadcasting activity. Channel 16 is the rst-priority channel on your radio. Channel 9 is the

default second-priority channel, but you can select another channel as your second-priority

channel. For more information on reprogramming the second-priority channel, see page 7.

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VHF 300 Series Owner’s Manual 7

Basic Operation

Monitoring Two Channels (Dual Watch)

Dual watch allows you to cycle between monitoring the current channel you have selected

and Channel 16.

1. Select MENU > CHANNEL > WATCH.

2. Select DUAL. “DUAL WATCH”, the currently selected channel, and Channel 16 are

displayed on the screen—for example, “DUAL WATCH CH: 75 + 16”.

3. To exit Dual watch, select EXIT.

Monitoring Three Channels (Tri Watch)

Tri watch allows you to cycle between monitoring the current channel you have selected,

Channel 16, and your second-priority channel.

1. Select MENU > CHANNEL > WATCH.

2. Select TRI. “TRI WATCH”, the currently selected channel, Channel 16, and your second-

priority channel are displayed on the screen—for example,

“TRI WATCH CH: 75 + 16 + 9”.

3. To exit Tri watch, select EXIT.

Reprogramming the Second-Priority Channel

You can program your radio to recognize a channel other than Channel 9 as your second-

priority channel.

1. Select MENU.

2. Select CHANNEL > 2ND PRIORITY.

3. Turn the Channel knob to change the channel displayed on the screen.

4. When the correct channel is displayed, select OK.

Using 16/9 Mode

16/9 is a priority operation that is activated by pressing the 16/9 key (North American

models) or the 16+ key (International models) on the handset. Pressing the 16/9 key or the

16+ key stops the current operation and changes your current working channel to Channel

16 on the rst press, your second-priority channel on the second press, and your original

channel on the third press. Entering this mode changes the transmit power to HI (25 W), and

leaving this mode restores the previous setting.

1. Press the 16/9 key or the 16+ key to immediately switch to Channel 16 and change the

transmit power to HI (25 W). To transmit on LO power in 16/9 mode, press the HI/LO

key, and then select 1W. The radio displays

on the screen to indicate low-power

transmission.

2. Press the 16/9 key or the 16+ key again to switch to your second-priority channel.

3. Press the 16/9 key or the 16+ key a third time to return to your previous current working

channel and the previous transmit power setting.

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8 VHF 300 Series Owner’s Manual

Basic Operation

Switching Between 1 W and 25 W Transmitting Modes

You can control the transmitting power of the radio. There are two options: LO (1 W) and

HI (25 W). LO is typically used for local transmissions, while HI is typically used for

distance and distress transmissions.

NOTE: When you press the 16/9 key (North American models) or the 16+ key

(International models), the radio switches to HI power. While in 16/9 mode, Channel 16

and the second-priority channel (Channel 9 by default) automatically transmit on HI power.

However, you can switch to LO power in 16/9 mode.

When two signals are broadcast on the same frequency, a VHF radio only receives the

stronger of the two signals. Other than distress calls, transmit using the lowest power

setting that allows you to communicate. This reduces the possibility of your transmissions

interfering with the transmissions of disinterested parties.

In the USA frequency band, transmissions on Channels 13 and 67 are required to be low-

power (1 watt) by default. You can bypass this power setting by pressing the 25W soft key

during transmission.

To switch between LO and HI transmitting power:

1. Press the HI/LO key.

2. Select 1W or 25W to toggle between LO and HI transmit power modes.

TIP: The radio returns to the Home screen automatically two seconds after changing the

1 W/25 W mode. You can also select OK to return to the Home screen.

Adjusting the Local/Distant Receiving Sensitivity

You can control the receiving sensitivity of the radio. If you are experiencing noise in high-

trafc areas or areas with electromagnetic interference (caused by cell-phone towers, for

example), set the receiving sensitivity to Local to decrease the sensitivity of the receiver. In

remote areas and in open water, set the receiving sensitivity to Distant to ensure that you are

using the maximum range of the receiver.

The

LOC

icon is displayed on the screen when set to Local receiving sensitivity.

1. Press the HI/LO key.

2. Select LOCAL/DIST to toggle between local and distant modes.

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VHF 300 Series Owner’s Manual 9

Basic Operation

Using the Intercom

The intercom is part of the Public Address (PA) system of your radio. You can use multiple

handset stations as an intercom system for two-way communication. Use the radio handset

to initiate communication with a remote handset station, and use a remote handset station to

initiate communication with the radio handset.

TIP: When the radio is in intercom mode, it does not receive trafc from your current

channel.

Initiating an Intercom Call

1. Select PA > INTRCM.

2. Select a device from the list. Selecting ALL will transmit to every station. The other party

must press the PTT key on the receiving unit to accept the call.

3. Press and hold the PTT key and speak your message.

4. Release the PTT key and listen for a response.

5. When you and the other party have nished talking, select EXIT to return to the Home

screen.

Receiving an Intercom Call

1. The screen indicates which station is calling. Press and release the PTT key to accept

the call.

2. When the other party has nished talking, press and hold the PTT key and speak your

message.

3. When you and the other party have nished talking, select EXIT to return to the Home

screen.

Using the Hailer

You must provide and install an optional hailer horn on the deck or tower to use the hailer

feature. See the VHF 300 Series Installation Instructions for installation information.

The hailer, which is part of the PA system of your radio, allows you to make on-boat or

ship-to-shore announcements. The hailer allows two-way communication; you can address

the ship using the handset, and sounds received through the horn can be heard through

the external speaker. For vessels with enclosed cabins, this allows you to hear what is

happening on deck.

NOTE: When the radio is in hailer mode, it does not receive trafc from your current

channel.

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10 VHF 300 Series Owner’s Manual

Basic Operation

To operate the hailer:

1. Select PA > HAILER. Sounds received through the horn can be heard through the radio

speaker.

2. Press and hold the PTT key and speak your announcement.

3. Turn the Channel knob to adjust the horn volume.

4. Release the PTT key to listen.

5. Select EXIT to return to the Home screen.

Using the Foghorn

You must provide and install an optional hailer horn on the deck or tower to use the foghorn

feature. See the VHF 300 Series Installation Instructions for installation information.

The foghorn is part of the PA 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, pre-dened patterns, or you can sound the horn manually.

Similar to the hailer, when you are manually operating the foghorn, sounds received through

the horn can be heard through the external speaker between soundings.

Automatically Sounding the Foghorn

1. Select PA > FOG.

2. Select AUTO from the list.

3. Select an item from the following options. The radio alternates between sounding the

pattern of tones or rings and receiving radio trafc.

UNDERWAY

•

STOPPED

•

SAILING/FISHING

•

RESTRICT/TOW

•

UNDER TOW

•

PILOT

•

AT ANCHOR

•

AGROUND

•

4. Turn the Channel knob to adjust the volume of the horn.

5. Select EXIT to turn off the automatic soundings and return to the Home screen.

Manually Sounding the Foghorn

NOTE: When you manually sound the horn, the radio will not alternate to receive radio

trafc between horn soundings.

To sound the fog horn:

1. Select PA > FOG.

2. Select MANUAL from the list. Sounds received through the horn can be heard through

the radio speaker.

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VHF 300 Series Owner’s Manual 11

Basic Operation

3. Press the PTT key on the handset to sound the horn. The horn will stop when you

release the PTT key.

4. Turn the Channel knob to adjust the volume of the horn.

5. Select EXIT to return to the Home screen.

Adjusting the Sound Frequency of the Foghorn

You can increase or decrease the sound frequency of the foghorn. The pitch of the tone

will rise with an increase in the frequency, and will fall 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. Typically, these regulations

correlate the required foghorn frequency with the size of the vessel.

1. Select the MENU key.

2. Select SYSTEM > FOG FREQUENCY.

3. Use the Channel knob to adjust the frequency in 50 Hz increments.

4. Select ACCEPT to save your changes and return to the Home screen. Select CANCEL

to disregard the changes and return to the previous screen.

Listening to NOAA Weather Broadcasts and Enabling

Weather Alerts

NOTE: This functionality is not available with the VHF 300i or VHF 300i AIS. NOAA

broadcasts on the WX channels are only available in the USA and certain regions in Canada.

There are 10 WX (weather) channels that are pre-programmed into your radio to monitor

weather broadcasts from the National Oceanic and Atmospheric Organization (NOAA). WX

channels are listen-only channels.

These broadcasts are in a continuous loop and are updated regularly. Because the NOAA

weather centers broadcasting the information are regional, the weather information will be

relevant to your broadcast area.

Accessing WX (Weather) Mode

1. While viewing the Home screen, press the Channel knob. “WX” is displayed to indicate

that you are listening to WX frequencies.

2. Turn the Channel knob to change the channel.

3. Select EXIT to return to the Home screen. The radio returns to the channel you were

listening to before you entered WX mode.

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12 VHF 300 Series Owner’s Manual

Basic Operation

Enabling WX (Weather) Alerts

You can enable your radio to continually monitor NOAA weather alerts. If the radio detects

an incoming weather alert, it will automatically tune to the WX channel that is broadcasting

the alert. The radio will not receive WX alerts if the transmitter is active.

NOTE: When you enable weather alerts, the radio only monitors the last monitored weather

channel.

1. Press the Channel knob to access WX mode.

2. Select ALERT.

3. Select EXIT or press the Channel knob to return to the Home screen.

The icon indicates that WX alerts are enabled.

Disabling WX (Weather) Alerts

1. Press the Channel knob to access WX mode.

2. Select ALERT.

3. Select EXIT to return to the Home screen.

Automatic Transmitter Identication System

The Automatic Transmitter Identication System (ATIS) is a vessel identication system

that can be used on certain inland waterways in certain countries throughout Europe. Your

Garmin dealer can program your VHF 300i or VHF 300i AIS to use ATIS if you plan to

use your radio on waterways that are within the bounds of the Regional Arrangement

Concerning the Radiotelephone Service on Inland Waterways (the Basel Agreement). The

use of ATIS is prohibited outside the European inland waterways covered by the Basel

Agreement.

When you enable ATIS, a data signal identifying your station is sent at the end of every

transmission. Data identifying your position is not sent; however, your position is calculated

through the method of triangulation by coastal stations receiving your transmissions.

To enable ATIS, enter your ATIS identication number (see below), and then turn on ATIS

(see page 13). Contact your Garmin dealer to determine your ATIS identication number

and to learn about ATIS requirements for your region.

Your radio disables the following functions when you enable ATIS:

Digital Selective Calling (DSC)

Dual watch and Tri watch

Channel scanning

The following International channels are restricted to transmit on low-power (1 watt) when

you enable ATIS: 6, 8, 10, 11, 12, 13, 14, 71, 72, 74, and 77.

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VHF 300 Series Owner’s Manual 13

Basic Operation

Entering Your ATIS Identication Number

IMPORTANT: Use caution when entering your ATIS identication number because you

can only enter it once. If you need to change your ATIS identication number after entering

it, you must take the radio to your Garmin dealer for reprogramming.

1. Press the MENU key.

2. Select ATIS > MY ATIS ID.

3. For each number in the sequence, turn the Channel knob clockwise to increase the

number, and counterclockwise to decrease the number.

4. Press the Channel knob to accept the number and move to the next number in the

sequence.

5. Select ACCEPT when you have entered your ATIS number. The radio prompts you

reenter your number.

6. Enter your ATIS ID number again, and press ACCEPT. If the ATIS ID numbers you

entered do not match, the screen displays “ATIS ID NUMBERS DO NOT MATCH”.

Select RETRY and enter the numbers again.

Viewing Your ATIS ID Number

1. Press the MENU key.

2. Select ATIS > MY ATIS ID.

3. Select OK to return to the previous screen, or press the MENU key to return to the Home

screen.

Turning ATIS Functionality On and Off

1. Press the MENU key.

2. Select ATIS > ATIS.

3. Select ON or OFF. When ATIS is enabled, the

ATIS

icon is displayed on the screen.

4. Select OK to save your changes and return to the Home screen. Press the MENU key to

return to the Home screen without saving your changes.

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14 VHF 300 Series Owner’s Manual

Digital Selective Calling

Digital Selective Calling (DSC) is a key component of the Global Maritime Distress and

Safety System (GMDSS). DSC provides VHF radios with the ability 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 and longitude and the

current time are transmitted when you send a distress call or other type of DSC call. If you

have manually entered your position information, your latitude, longitude, and time of entry

are transmitted with the call. Having your location automatically transmitted prevents you

from needing to identify your location in an emergency situation.

Channel 70 is reserved exclusively for DSC calls, and your radio 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, since your radio automatically changes to Channel 70 to transmit a DSC call.

Your radio sends the DSC data over Channel 70 in less than one second, and then tunes to

the appropriate channel for voice communications. The icon is displayed when you

have an incoming or missed DSC call.

IMPORTANT: To use the DSC capabilities of your radio, you must rst enter a Mobile

Maritime Safety Identity (MMSI) number. An MMSI number identies each DSC radio,

like a telephone number.

IMPORTANT: The radio disables DSC if you turn on ATIS. See page 12.

Entering Your MMSI Number

The Mobile Maritime Safety Identity (MMSI) number is a nine-digit code that acts as a

DSC self-identication number, and is required in order 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 the following

sources:

Federal Communications Commission (FCC)—assignments are recognized

internationally

BoatU.S., Sea Tow, or United States Power Squadrons

—assignments are for USA

waters only

After obtaining your MMSI number, you must program the number into your radio to

enable DSC.

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VHF 300 Series Owner’s Manual 15

Digital Selective Calling

IMPORTANT: Use caution when entering your MMSI number, because you can only enter

it once. If you need to change your MMSI number after entering it, you must take the radio

to your Garmin dealer for reprogramming.

To enter your MMSI number:

1. Press the MENU key.

2. Select DSC > MY MMSI.

3. For each number in the sequence, turn the Channel knob clockwise to increase the

number, and counterclockwise to decrease the number. Press the Channel knob to

move to the next number in the sequence. Select ab to return to a previous character.

4. Select ACCEPT when you have entered your MMSI number. The radio prompts you

conrm your entry.

5. Enter your MMSI number again, and select ACCEPT. If the MMSI numbers you entered

do not match, the screen displays “MMSI NUMBERS DO NOT MATCH”. Select RETRY

and repeat the process. If you do not want to enter your MMSI number at this time,

select CANCEL.

Viewing Your MMSI Number

1. Press the MENU key.

2. Select DSC > MY MMSI.

3. Select OK to return to the previous screen, or press the MENU key to return to the Home

screen.

DSC Distress Calls

When you make a DSC distress call, your call is transmitted to all DSC-capable radios

within receiving range. Your current GPS position (latitude and longitude) and the

current time are included in the transmission if you have a GPS device connected to your

transceiver. If you have manually entered your position information with the time, that

data is transmitted with the call. For information on manually updating your position

information, see page 26.

NOTE: Familiarize yourself with the standard distress-call format and protocol to ensure

that your calls are clear and effective.

Sending an Undesignated Distress Call

When you send an undesignated distress call, the nature of your emergency is not

transmitted to the receiving stations. Sending an undesignated distress call is a shorter and

quicker procedure that can save you time during an emergency.

1. Lift the spring-loaded door, and press and hold the DISTRESS key for at least three

seconds. The transceiver beeps, and the screen displays “DISTRESS CALL COUNTING

DOWN”. The channel pane counts down the seconds from 3 to 1.

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16 VHF 300 Series Owner’s Manual

Digital Selective Calling

2. The radio automatically sounds an alarm, switches to Channel 70, and transmits your

call on HI (25 W) power. You can press any key to turn off the alarm sound.

3. After transmitting your distress call, the radio automatically tunes to Channel 16 on HI

(25 W) power. Press the PTT key on the handset and speak your message. The radio

waits for an acknowledgement (ACK) on Channel 70 from a listening station.

Sending a Designated Distress Call

When you send a designated distress call, the nature of your emergency is transmitted to the

receiving stations.

1. Lift the spring-loaded door and press the DISTRESS key.

2. Use the Channel knob to select the type of distress call:

UNDESIGNATED

FIRE

FLOODING

COLLISION

GROUNDING

CAPSIZING

SINKING

ADRIFT

ABANDONING

PIRACY

MAN OVERBOARD

NOTE: To exit this screen without sending a designated distress call, press the CLEAR key

to return to the Home screen, or press the 16/9 key (North American models) or the 16+ key

(International models) to tune to Channel 16.

3. Press and hold the DISTRESS key for at least three seconds.

4. The transceiver beeps, and the screen displays “DISTRESS CALL COUNTING DOWN”.

The channel pane counts down the seconds from 3 to 1.

5. The radio automatically sounds an alarm, switches to Channel 70, and transmits your

call on HI (25 W) power. You can press any key to turn off the alarm sound.

6. After transmitting your distress call, the radio automatically tunes to Channel 16 on HI

(25 W) power. Press the PTT key on the handset and speak your message. The radio

waits for an acknowledgement (ACK) from a listening station.

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VHF 300 Series Owner’s Manual 17

Digital Selective Calling

Waiting for a Distress Call Acknowledgement

If the radio does not receive a distress call acknowledgement, the radio retransmits the

distress call at a random time between 3.5 and 4.5 minutes. This process is repeated

continually until the radio receives an acknowledgement.

Receiving a distress call acknowledgement:

1. When the radio receives a distress call acknowledgment, the radio beeps and the screen

displays “DISTRESS ACK”. Press any key to turn off the beeping.

2. Select ] to view additional information. If the MMSI of the station transmitting the

ACK signal is an entry in your directory, the name associated with the MMSI number is

indicated on the screen. If not, the screen displays the MMSI number.

3. Select ACCEPT.

Stopping Automatic Retransmission of Distress Calls

To stop the radio from automatically retransmitting a distress call, select CANCEL.

The radio remains tuned to Channel 16. Selecting CANCEL does not communicate to

other stations that you no longer have an emergency. Selecting CANCEL only stops the

automatic repetition of the call. For information on revoking a distress call, see below.

Revoking a Distress Call

A DSC distress call is not transmitted until you press and hold the DISTRESS key for at

least three seconds. However, if you inadvertently make a DSC distress call or are no longer

in distress, it is important to cancel the call immediately by transmitting a voice message to

All Stations on Channel 16.

1. Select CANCEL to cancel the distress alert.

2. Press the 16/9 key. The radio tunes to the Channel 16.

3. Press the PTT key on the handset and speak a voice message to cancel the false

distress alert. The following is an example of an appropriate cancellation message:

“All Stations, All Stations, All Stations, this is ________ (vessel name), MMSI number

________, Position ________ North (or South), ________ West (or East). Cancel my

distress alert of ________ (date and time). This is ________ (vessel name), MMSI number

________, Out.”

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18 VHF 300 Series Owner’s Manual

Digital Selective Calling

Placing Calls

Placing Individual Calls

1. Press the DSC key.

2. Select INDIVIDUAL.

3. Select from the following options to select the place from which the MMSI number is

retrieved:

MANUAL—a screen is displayed that allows you to enter the MMSI number manually.

Select a number and move to the next character. When you have entered the correct

MMSI number, select ACCEPT.

DIRECTORY—the directory is displayed. Select an entry.

RECENT CALLS—a screen is displayed that allows you to select from your recent

calls. Select an entry.

4. After you have selected the vessel or entered the MMSI number manually, select the

channel on which you want to communicate. The radio transmits this request with your

call. See below for information on selecting a channel.

5. Select CALL.

The radio transmits the call on Channel 70 and returns to the current working channel. The

radio listens for an acknowledgement on Channel 70 while staying on the working channel.

After an acknowledgement is received, the radio automatically tunes to the channel you

selected.

Placing Group Calls

You can contact a group of specic vessels, such as a sailing club or otilla, by making a

group call. Before placing a call to a group, ensure that the MMSI number of the group is

entered into the memory. For more information on entering a group, see page 26.

1. Press the DSC key.

2. Select GROUP > CALL.

3. Select an entry.

4. After you have selected the group, select the channel on which you want to

communicate. The radio will transmit this request with your call. See below for

information on selecting a channel.

5. Select CALL. The radio transmits the call on Channel 70 and tunes to the channel you

selected.

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VHF 300 Series Owner’s Manual 19

Digital Selective Calling

Selecting the Channel for Individual Calls or Group Calls

When placing an individual or group call, you can select from the following channels on

which you want to communicate. The radio transmits this request with your call.

USA: 6, 8 ,9 ,10 ,13 ,16, 17, 67, 68, 69, 71, 72, 73, or 77

Canadian and International: All of the channels listed previously, plus Channel 15

In most cases, the selection of a DSC channel is limited to those channels that are available

in all frequency bands. When selecting the channel, select CUSTOM to select a different

channel than the ones listed above. If you select a custom channel, be aware that the station

you are calling may not be able to comply with the specied channel. Ensure that you select

a channel that is appropriate for communication.

Placing All-Ships Calls

All-ships calls are transmitted to all stations within receiving distance of your radio. You can

make two types of all-ships calls:

Safety calls are used to broadcast signicant navigational or weather-related information.

Urgency calls are used to communicate situations about the safety of a vessel or person

when danger is not imminent. Discerning whether a situation warrants a distress call or

an urgency call is the responsibility of the captain.

To place an all-ships call:

1. Press the DSC key.

2. Select ALL SHIPS.

3. Select SAFETY or URGENCY to indicate the reason for your call.

4. Select CALL. The radio transmits the call on Channel 70 and then automatically

switches to Channel 16.

Placing Position Request Calls

Position data received from stations that respond to position request calls is sent over the

NMEA network, so that you can track the vessels on your Garmin chartplotter, for example.

For more information on NMEA 0183 and NMEA 2000, see page 29.

1. Press the DSC key.

2. Select POS. REQUEST.

3. Select from the following options to select the place from which the MMSI number is

retrieved:

MANUAL—a screen is displayed that gives you the ability to enter the MMSI number

manually. Select a number and move to the next character. When you have entered

the correct MMSI number, select ACCEPT.

DIRECTORY—the directory is displayed. Select an entry.

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20 VHF 300 Series Owner’s Manual

Digital Selective Calling

4. Select ACCEPT when you have entered your MMSI number.

5. Select CALL. The radio transmits the call on Channel 70, and then switches to your

current working channel. The screen displays “POS REQUEST WAITING FOR

ACKNOWLEDGE”.

Receiving Calls

Receiving Distress Calls and Distress Relay Calls

The radio sends data relative to the call over the NMEA network based on how you have

MMSI ltering congured. See page 30 for more information.

1. When receiving a distress call or a distress relay call, the screen displays the

“DISTRESS” or “DISTR RELAY” and information about the call (for example, the MMSI

number and the nature of the distress). Select ] to view additional information.

2. If necessary, select OK to tune to Channel 16. See page 27 for more information on

conguring the auto channel-change setting. If you select CANCEL, the radio does not

change channels and continues to receive on the current channel.

3. Select OK to return to the Home screen on the new channel.

Receiving All-Ships Urgency Calls

1. When receiving an all-ships urgency call, “ALL SHIPS” is displayed on the screen.

“URGENCY” is shown as the type of call.

2. If necessary, select OK to switch to Channel 16. See page 27 for more information on

conguring the auto channel change setting. If you select CANCEL, the radio does not

change channels and continues to receive on the current channel.

3. Select OK to return to the Home screen on the new channel.

Receiving All-Ships Safety Calls

1. When receiving an all-ships safety call, “ALL SHIPS” is displayed on the screen.

“SAFETY” is shown as the type of call. Select OK to change the channel. If you select

CANCEL, the radio does not change channels and continues to receive on the current

channel.

2. Select OK to return to the Home screen on the new channel.

Receiving Individual Routine Calls

1. When receiving an individual routine call, “INDIVIDUAL” is displayed on the screen.

“ROUTINE” is shown as the type of call. If the channel request is for an invalid channel,

“INVALID CH REQUEST” is displayed on the screen.

2. If the channel request is for a valid channel, select OK to change channels. If you select

CANCEL, the radio does not change channels and continues to receive on the current

channel.

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VHF 300 Series Owner’s Manual 21

Digital Selective Calling

Receiving Position Request Calls

You can congure your radio reply automatically to incoming position requests, to prompt

you to review and approve the incoming requests before replying, or to ignore incoming

requests (see page 27 for more information).

If you enable automatic position replies, the screen displays “SENDING POSITION

CALLING” and sends your position when receiving a position request. After the call has

been transmitted successfully, the screen displays “POSITION SENT”.

When receiving a position request, “POS. REQUEST FROM [VESSEL NAME or MMSI

NUMBER]” is displayed on the screen. If GPS data is available, press OK to send the

position reply. If GPS data is not available, the screen displays “NO GPS DATA. UNABLE

TO COMPLY”.

Receiving Position Send Calls

When receiving a position send call (position report), “POS. SEND FROM [VESSEL

NAME or MMSI NUMBER]” is displayed on the screen with the position data. Select OK

to return to the Home screen.

Receiving Group Calls

1. When receiving a group call, “GROUP ROUTINE” is displayed on the screen. The radio

prompts you to change to the requested channel. If the channel request is for an invalid

channel, “INVALID CH REQUEST” is displayed on the screen.

2. Select OK to change the working channel.

3. Select OK to return to the Home screen on the new channel.

Position Tracking

When you enable position tracking, your radio uses interval position-request calls to track

up to three vessels. Regulations allow transmission of one position-request call every ve

minutes. You can call up to three vessels that your radio will alternate calling at ve-minute

intervals. If a vessel does not respond to ve consecutive position-request calls, the vessel is

removed from the position-tracking list.

The following timetable shows the polling sequence when you have three vessels in the

position-tracking list. The radio continues to send position-request calls until you stop

position tracking by selecting EXIT.

Time 0 minutes 5 minutes 10 minutes 15 minutes 20 minutes

Vessel Polled Ship 1 Ship 2 Ship 3 Ship 1 Ship 2

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22 VHF 300 Series Owner’s Manual

Digital Selective Calling

Position data received from stations that respond to position-request calls is sent over the

NMEA network, so that you can track the vessels using your Garmin chartplotter. For more

information on NMEA 0183 and NMEA 2000, see page 29.

Selecting the Vessels and Activating the Call

1. Press the DSC key.

2. Select POS. TRACKING > ADD ENTRY. You can have no more than three vessels on

the position tracking list at one time. If you select ADD ENTRY and the radio sounds a

triple error beep, you must delete an entry before adding another.

3. Select the vessels from the directory.

4. Select BEGIN TRACKING. The icon is displayed to indicate that position tracking is

in progress.

5. Select EXIT to stop position tracking.

Viewing and Deactivating Vessels on the Position Tracking List

1. Press the DSC key.

2. Select POS. TRACKING.

3. To view the vessels on the list, select VESSELS.

4. To congure the radio to keep a vessel on the list, but to not call that vessel for position

tracking information, select the vessel.

5. Select OFF.

Deleting a Vessel from the Position Tracking List

1. Press the DSC key.

2. Select POS. TRACKING > DELETE.

3. Select the vessel.

4. Select YES to delete the vessel from the list. Select NO to return to the previous screen

without deleting.

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VHF 300 Series Owner’s Manual 23

Digital Selective Calling

Working with the Call Logs

For every DSC call that your radio receives, the calling station, type of call, and date and

time of the call are recorded in the call logs. The latitude and longitude of the calling station

are also recorded if they are transmitted with a call.

There are three categories for calls that are logged: distress, position, and other. The

following table indicates where each type of call is located in the call logs.

Call Type Call Log

Distress Distress

Distress relay Distress

Distress ACK Distress

Position send Position

Position request Position

Group Other

All Ships Other

Individual Other

If you have entered the calling station in your directory, the name of the station is displayed

in the list of calls. If not, the MMSI number is displayed. A symbol indicating the station

type may be displayed to the left of the station name or MMSI number. The following table

indicates the meaning of these symbols and the MMSI number format for different station

types.

Symbol Meaning MMSI Number Format

Ship station xxxxxxxxx

Group call 0xxxxxxxx

Coastal station 00xxxxxxx

Viewing the Calls Stored in the Call Logs

1. Press the DSC key.

2. Select CALL LOG > DISTRESS LOG, POSITION LOG, or OTHER LOG.

3. Select the call. Information about the call is displayed on the screen. Select ] to scroll

and view all of the information.

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24 VHF 300 Series Owner’s Manual

Digital Selective Calling

Placing a Call from a Call Log

All calls placed from the call log are individual routine calls.

1. Press the DSC key.

2. Select CALL LOG > DISTRESS LOG, POSITION LOG, or OTHER LOG.

3. Select the MMSI number or the station name.

4. Select CALL. The screen indicates individual routine as the call type.

5. Select the channel on which you want to communicate. The radio transmits this request

with your call. See page 19 for information on selecting a channel.

6. Select CALL.

Saving a Vessel to the Directory from a Call Log

1. Press the DSC key.

2. Select CALL LOG > DISTRESS LOG, POSITION LOG, or OTHER LOG.

3. Select the MMSI number. Select a station name if you want to edit the name in the

directory.

4. Select SAVE.

5. To edit the name, turn the Channel knob to change the character. Press the Channel

knob to select the character and move to the next character in the name. Select ab to

return to a previous character. You can enter up to 10 characters.

6. Select ACCEPT to save your changes. Select CANCEL to exit the edit screen without

saving your changes.

Deleting a Call Log Entry

1. Press the DSC key.

2. Use the Channel knob to select CALL LOG > POSITION LOG, DISTRESS LOG, or

OTHER LOG.

3. Use the Channel knob to select the MMSI number or station.

4. Select ].

5. Select DELETE.

6. Select YES to delete the call. Select NO to cancel this action and return to the previous

screen.

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VHF 300 Series Owner’s Manual 25

Digital Selective Calling

Using the Directory

Viewing the Directory

1. Press the DSC key.

2. Select DIRECTORY.

3. Select a station name in your directory.

4. Press the CLEAR key to return to the previous screen. Press the MENU key to return to

the Home screen.

Adding an Individual Entry to the Directory

1. Press the DSC key.

2. Select DIRECTORY > ADD ENTRY.

3. Enter the MMSI number.

4. Enter a name. You can enter up to 10 characters.

5. Select ACCEPT to save your changes to the directory. Select BACK to return to the

previous screen without saving your changes. Press the MENU key at any time to return

to the Home screen.

Editing an Individual Entry in the Directory

1. Press the DSC key.

2. Select DIRECTORY > EDIT ENTRY.

3. Select an entry in the directory.

4. Change the characters in the MMSI eld or the Name eld.

5. Select ACCEPT to save your changes to the directory. Select BACK to return to the

previous screen without saving your changes. Press the MENU key to return to the

Home screen.

Deleting an Individual Entry from the Directory

1. Press the DSC key.

2. Select DIRECTORY > DELETE.

3. Select the entry to delete.

4. Select YES to delete the entry. Select NO to quit the action and return to the directory

list. Press the CLEAR key at any time to return to the previous screen without saving

your changes. Press the MENU key to return to the Home screen.

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26 VHF 300 Series Owner’s Manual

Digital Selective Calling

Adding and Modifying Group Entries

Adding a Group

1. Press the DSC key.

2. Select GROUP > ADD ENTRY.

3. Enter the MMSI number.

4. Enter a name.

5. Select ACCEPT to save your changes. Select CANCEL to return to the previous screen

without saving the changes. Press the MENU key to return to the Home screen.

Editing a Group

1. Press the DSC key.

2. Select GROUP > EDIT ENTRY.

3. Change the characters in the MMSI eld or the Name eld.

4. Select ACCEPT to save your changes. Select CANCEL to return to the previous screen

without saving the changes. Press the MENU key to return to the Home screen.

Deleting a Group

1. Select the DSC key.

2. Select GROUP > DELETE.

3. Select YES to delete the entry. Select NO to quit the action and return to the previous

screen.

Conguring DSC Settings

Manually Entering Position Information

If you do not have a GPS device connected to your radio, manually enter your position and

time of entry so that this information will be transmitted with DSC calls. When you enter

the position and time manually, “MANUAL POS” is displayed on the screen.

Your radio has two alarms to indicate that you need to update your position data:

When the position data you entered manually is over four hours old, the radio beeps and

displays “DATA IS OVER 4 HOURS OLD” on the screen.

After 23.5 hours, manually-entered position data is considered invalid. The radio

displays “DATA IS INVALID” on the screen. The radio will not transmit position data

that is more than 23.5 hours old.

See page 35 for more information on GPS alarms.

When you manually enter your position with the time, the time remains xed at the value

you specify. The radio updates the time only if you connect a GPS device to the radio.

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VHF 300 Series Owner’s Manual 27

Digital Selective Calling

To enter position information:

1. Press the MENU key.

2. Select SYSTEM > MANUAL GPS.

3. For each number in the sequence, turn the Channel knob clockwise to increase the

number, and counterclockwise to decrease the number. When entering a direction

character, rotate the channel knob to switch between N or S and E or W.

Conguring the Automatic Channel Change Setting

This setting determines whether the radio automatically tunes to Channel 16 when receiving

the following types of calls:

Distress

Distress relay

All-ships urgency

Under certain conditions, you may want to disable automatic channel changing, such as

when you need to continually monitor a channel to maintain uninterrupted communication

with another vessel. When disabled, the icon is displayed on the screen.

1. Press the MENU key.

2. Select DSC > AUTO CHANGE CH.

3. Select from the following options:

ON—when a qualifying call is received, the radio automatically turns the channel to

Channel 16.

OFF—when a qualifying call is received, a message is displayed that prompts you to

accept or decline the changing of channels.

4. Press the MENU key to return to the Home screen.

Conguring the Automatic Position Reply Setting

You can congure the way your radio responds to incoming position requests.

1. Press the MENU key.

2. Select DSC > POSITION REPLY.

3. Select from the following options:

AUTO—the radio automatically and immediately sends position information to all

position inquiries.

MANUAL—the radio sends position information only after you review and approve

the request.

OFF—the radio does not send position information or notify you when a position

inquiry has been received.

4. Press the MENU key to return to the Home screen.

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28 VHF 300 Series Owner’s Manual

Digital Selective Calling

Sending Voicemail

You can record a 15-second voicemail message and send it to another vessel. When you

send the voicemail, the radio will call the other vessel and transfer the voicemail if the other

vessel responds with an acknowledgement message. The icon is displayed when you

have an outgoing voicemail message.

If the radio is unable to successfully transmit your voicemail within one hour, the radio

prompts you to retry or cancel the call. If you do not make a selection after three minutes,

the call is cancelled automatically.

To record a voicemail message:

1. Select DSC > VOICEMAIL > MESSAGE.

2. Press the PTT key to record your voice message. You can record up to 15 seconds.

NOTE: If you want to rerecord your voicemail message, press the PTT key again.

To listen to a voicemail message:

1. Select DSC > VOICEMAIL > MESSAGE.

2. Select LISTEN.

To delete a voicemail message:

1. Select DSC > VOICEMAIL > MESSAGE.

2. Select DELETE.

To transmit a voicemail message:

1. Select DSC > VOICEMAIL > SEND VOICEMAIL.

2. Select an entry from the directory.

3. Use the CHANNEL knob to select a channel.

4. Select CALL. The radio calls the other vessel and transfers the voicemail if the other

vessel responds with an acknowledgement message.

Automatic Identication System

The VHF 300 AIS and VHF 300i AIS are equipped with Automatic Identication System

(AIS) receivers. AIS information can be sent over a NMEA 2000 network or a high-speed

NMEA 0183 network, depending on the communication protocol settings (see page 30).

To turn AIS on or off:

Select MENU > AIS > ON (or OFF).

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VHF 300 Series Owner’s Manual 29

Advanced Operation

NMEA 0183 and NMEA 2000

Connect your radio to a NMEA 0183 network or to a NMEA 2000 network to perform the

following functions:

Transfer received DSC distress and position information to any compatible chartplotter.

Receive GPS position. GPS position can be displayed on the Home screen and is

transmitted with DSC calls. The icon is displayed when GPS data is available, and

blinks when GPS data is not present. When GPS data is not present, the radio will signal

for you to enter your position manually every four hours.

Transfer AIS information that the radio receives from other vessels. The radio can

transfer this data over a NMEA 2000 network or a NMEA 0183 high-speed network. For

information on enabling AIS, see page 28.

For supported NMEA 0183 sentences and NMEA 2000 PGNs, see page 49. For more

information on connecting your radio to a NMEA network, see the VHF 300 Series

Installation Instructions.

Additional Functionality with Other Garmin Devices

Your VHF 300 series radio has additional capabilities when connected with other Garmin

devices.

NOTE: Your Garmin chartplotter may require a free software upgrade to use the

functionality listed in this section. Go to www.garmin.com for current updates to your

Garmin chartplotter software.

When you connect your radio to a Garmin chartplotter using NMEA 0183 or

NMEA 2000, your chartplotter can keep track of the current and previous positions of

the contacts in the radio directory.

TIP: Try using position tracking on up to three contacts to automate this process.

When your VHF 300 series radio is connected to a NMEA 2000 network with another

Garmin chartplotter, you can use the chartplotter interface to set up an individual routine

call.

As an additional safety measure, when your VHF 300 series radio is connected to a

NMEA 2000 network and you initiate a man-overboard distress call from your radio,

your Garmin chartplotter displays the man-overboard screen and prompts you to navigate

to the man-overboard point. If you have a Garmin autopilot system connected to the

network, it prompts you to start a Williamson’s turn to the man-overboard point.

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30 VHF 300 Series Owner’s Manual

Advanced Operation

Selecting NMEA 0183 or NMEA 2000

This setting determines whether you are connected to a NMEA 0183 network or a NMEA

2000 network. The radio can only communicate over one network type at a time.

To congure a VHF 300 or a VHF 300i:

1. Press the MENU key.

2. Select COMMUNICATIONS > PROTOCOL.

3. Select NMEA2000 or NMEA0183.

To congure a VHF 300 AIS or a VHF 300i AIS:

1. Press the MENU key.

2. Select COMMUNICATIONS > PROTOCOL.

3. Select NMEA2000 or NMEA0183.

4. If you selected NMEA0183, select one of the following options:

If AIS is disabled, select NMEA STANDARD or NMEA HIGH SPD.

If AIS is enabled, you can only select NMEA HIGH SPD.

MMSI (Vessel) Filtering over a NMEA Network

Your radio can send call-related data over NMEA 0183 or NMEA 2000 when it receives

distress calls, acknowledgements to position request calls, and other position-send calls. You

can lter the MMSI numbers (vessels) for which your radio sends this data in three ways:

any MMSI number (all vessels), no MMSI numbers (no vessels), or select MMSI numbers

(vessels selected from your directory).

When you congure the radio to send data for select vessels, and you receive an

acknowledgement to a position request call, or other position-send call from an MMSI

number not in your directory, your radio does not send NMEA data for that call. Distress

call information will still be sent. For more information about NMEA output from your

radio, see page 49.

Conguring MMSI Filtering for Select Vessels

1. Press the MENU key.

2. Select COMMUNICATIONS > DSC OUTPUT > SELECT VESSELS. You can also select

ALL VESSELS to send data when you receive a call from any MMSI number, or select

NO VESSELS to not send data for any MMSI number.

3. Select the vessel in your directory.

4. Select from the following options:

ON—the radio will send call-related data over your NMEA network when you receive

a distress call, an acknowledgement to a position request call or other position send

call from this vessel.

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VHF 300 Series Owner’s Manual 31

Advanced Operation

OFF—the radio will not send data for this vessel. Distress call information will still be

sent.

Modifying the Operating Settings

Modifying the Backlight and Contrast Settings

1. Press the MENU key.

2. Select SYSTEM > DISPLAY > BACKLIGHT or CONTRAST.

3. Turn the Channel knob to adjust the backlight or contrast. “MAX” represents the

maximum setting, and the number 1 represents the minimum setting.

4. Select CANCEL to disregard your changes and return to the previous screen. Select OK

to save your changes and return to the Home screen.

Modifying the Beeper Setting

You can change the volume of the beeper tone that sounds when you press keys or the

Channel knob, or you can turn the beeper tone off.

1. Press the MENU key.

2. Select SYSTEM > BEEPER.

3. Select from the following options:

OFF—the radio does not beep when you press keys, or when you press the Channel

knob.

QUIET or LOUD—set the beeper volume level.

Turning the Auto Power-On Setting On or Off

1. Press the MENU key.

2. Select SYSTEM > AUTO POWER-ON.

3. Select ON or OFF.

Conguring Whether Latitude and Longitude are Displayed on the

Home Screen

You can display the latitude and longitude on the home screen if you have a GPS device

connected to your radio, or if you enter position data manually.

1. Press the MENU key.

2. Select SYSTEM > NUMBERS > LAT/LONG.

3. Select from the following options:

AUTO—latitude and longitude information is displayed on the Home screen.

HIDE—latitude and longitude information is not displayed on the Home screen.

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32 VHF 300 Series Owner’s Manual

Advanced Operation

Conguring Course Over Ground/Speed Over Ground (COG/SOG)

Information Displayed on the Home Screen

You can display COG and SOG on the home screen if you have a GPS device connected to

your radio.

1. Press the MENU key.

2. Select SYSTEM > NUMBERS > COG/SOG.

3. Select from the following options:

AUTO—COG/SOG information is displayed on the Home screen.

HIDE—COG/SOG information is not displayed on the Home screen.

Conguring Whether the Time is Displayed on the Home Screen

You can congure whether the time is displayed on the Home screen. The radio updates the

time only if you connect a GPS device to the radio. When you manually enter your position

with the time, the time remains xed at the value you specify. This time of entry is always

displayed on the Home screen, even if you hide the time.

1. Press the MENU key.

2. Select SYSTEM > NUMBERS > TIME.

3. Select from the following options:

AUTO—time information is displayed on the Home screen.

HIDE—time information is not displayed on the Home screen.

Conguring the Time Format

1. Press the MENU key.

2. Select SYSTEM > UNITS > TIME > FORMAT.

3. Select 12 Hour, 24 Hour, or UTC.

Conguring the Time Offset

If you prefer to have your unit display the time in local time rather than Universal

Coordinated Time (UTC), you need to indicate the local time offset from UTC time. When

you make an adjustment for local time, “LOC” is displayed after the time instead of “UTC”

on the Home screen.

NOTE: The time sent when you make a DSC call is always sent in UTC format.

To congure the UTC offset:

1. Press the MENU key.

2. Select SYSTEM > UNITS > TIME > OFFSET.

3. Turn the Channel knob to enter an offset number in increments of 0.5 hours. You can set

the offset to a maximum of +/- 13 hours.

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VHF 300 Series Owner’s Manual 33

Advanced Operation

4. Select from the following options:

OK—save your changes and return to the previous screen.

CANCEL—remove your changes.

Modifying the Speed Unit of Measurement

You can adjust the unit of measure that is displayed for the speed calculation throughout

the radio. The Speed Over Ground (SOG) on the Home screen will be displayed in the

measurement you select here.

1. Press the MENU key.

2. Select SYSTEM > UNITS > SPEED.

3. Select from the following options:

KNOTS—change the unit of measure to knots.

MPH—change the unit of measure to miles per hour.

KPH—change the unit of measure to kilometers per hour.

Modifying the Heading Display

You can modify the heading to display either true or magnetic calculations. This heading

measurement is displayed throughout the radio including Course Over Ground (COG) on

the Home screen.

1. Press the MENU key.

2. Select SYSTEM > UNITS > HEADING.

3. Select from the following options:

TRUE—change the calculation to reect true north.

MAGNETIC—change the calculation to reect magnetic north.

NOTE: If your radio is congured for NMEA 2000 communication, you cannot select

TRUE or MAGNETIC. Your radio displays AUTO as the setting and displays heading

data based on the information provided over the network (PGN 129026 – COG/SOG, Rapid

Update).

Selecting the Frequency Band

You can switch between the USA, International, or Canadian frequency bands. For a list of

channels available in each frequency band, see pages 36–43.

NOTE: The International frequency band is the only band available for the VHF 300i and

the VHF 300i AIS, unless you have the other bands enabled by an Garmin authorized dealer.

1. Press the MENU key.

2. Select MENU > CHANNEL > FREQUENCY BAND.

3. Use the Channel knob to select USA, INTERNATIONAL, or CANADA.

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34 VHF 300 Series Owner’s Manual

Advanced Operation

Changing the Language

1. Press the MENU key.

2. Select LANGUAGE.

3. Select the system language.

Changing the Channel Names

Channel names are displayed on the Home screen using nine characters. If the name is

longer than nine characters, the full name scrolls across the top of the screen and then

switches to the short name. You can change the nine-character name of the channel to reect

a local meaning.

1. Press the MENU key.

2. Select CHANNEL > NAME.

3. Select the channel you want to edit.

4. To edit the default name, turn the Channel knob to change the character. Press the

Channel knob to select the character and move to the next character in the word. You

can enter a maximum of nine characters for a channel name.

5. Select any of the following options to perform various functions:

Press ab to return to a previous character.

CANCEL—return to the previous screen without saving your changes.

6. When you have completed renaming the channel, select ACCEPT.

Restoring Factory Settings

You can restore the radio to utilize the factory default settings. When you perform this

action, any changes you have made to the radio settings are lost, and the call logs are

deleted. The directory and group entries are retained.

1. Press the MENU key.

2. Select SYSTEM > SYSTEM INFO.

3. Select RESET.

4. Select from the following options:

YES—restart the radio and restore it to the original factory default settings.

NO—return to the previous screen.

Testing the System Operation

1. Press the MENU key.

2. Select SYSTEM > SYSTEM INFO.

3. Select TEST. A list of test items is displayed.

4. If necessary, use the arrow keys to scroll through the information.

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VHF 300 Series Owner’s Manual 35

Appendix

Alarms and Messages

The radio may generate the following alarms or system messages.

Battery Alarm

If the radio detects a voltage greater than 15.8 Vdc or less than 10 Vdc, “HIGH VOLTAGE”

or “LOW VOLTAGE” is displayed on the screen. Check the wiring if any of these

conditions occur.

Main in Use

When the primary VHF 300 series radio unit is being used, “MAIN IN USE” is displayed

on the screen of all remote Garmin GHS series handsets. The screen returns to normal three

seconds after the last input on the primary station.

Remote handset stations cannot interrupt the primary radio unit. However, remote handset

stations can interrupt the operation of other handset stations.

WX (Weather Alert)

If you set the WX alarm and an incoming weather alert is detected, the radio automatically

tunes to the WX channel that is broadcasting the alert. See page 11 for more information on

weather alerts.

GPS Data Alarm

When GPS data from a NMEA network or position data you entered manually is over four

hours old, the alarm tone beeps and “DATA IS OVER 4 HOURS OLD” is displayed on the

screen.

Select IGNORE to disregard the alarm and to turn off the alarm beeping. When you take

no action after three minutes, IGNORE is selected automatically.

Select SET to enter a new position. See page 26 for more information on manually

entering position data.

Invalid GPS Data Alarm

When GPS data from a NMEA network or position data you entered manually is over 23.5

hours old, “DATA IS INVALID” is displayed on the screen. The radio will not transmit

position data that is more than 23.5 hours old.

Select IGNORE to discard the old position data. The screen displays “NO GPS INFO”

on the Home screen. When you take no action after three minutes, IGNORE is selected

automatically.

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36 VHF 300 Series Owner’s Manual

Appendix

Select SET to enter a new position. See page 26 for more information on manually

entering position data.

Position Tracking

After ve consecutive failed attempts to request position information from a vessel, “NO

POS FOR [VESSEL NAME]” is displayed on the screen.

Select RETRY to reattempt the position request.

Select REMOVE to discontinue calling the vessel. When you take no action after three

minutes, REMOVE is selected automatically.

Channel Lists

The USA, Canadian, and International channel lists provided in this Appendix are for

reference only. It is the responsibility of the radio operator to ensure that channels are used

correctly according to local regulations.

USA Channels

For the latest information on USA channels, visit www.navcen.uscg.gov/marcomms

/vhf.htm. Also visit the Federal Communications Commission’s Marine VHF Radio

Channels page at http://wireless.fcc.gov/services/index.htm?job=service

_bandplan&id=ship_stations. The FCC page does not include frequency information, but

has more complete information on the use of the channels.

IMPORTANT: Boaters primarily should use channels listed as non-commercial. Use

Channel 16 to call other stations or for distress alerting. Use Channel 13 to contact a ship

when there is danger of collision. All ships of length 20 m or greater are required to guard

VHF Channel 13, in addition to VHF Channel 16, when operating within USA territorial

waters. Users may be ned by the FCC for improper use of these channels.

Channel

Number

Transmission

MHz

Receiving

MHz

User

01A 156.050 156.050 Port operations and commercial, VTS. Available only in

the New Orleans and lower Mississippi areas.

03A 156.150 156.150 Government only

05A 156.250 156.250 Port operations or VTS in the Houston, New Orleans,

and Seattle areas.

6 156.300 156.300 Intership safety

07A 156.350 156.350 Commercial

8 156.400 156.400 Commercial (Intership only)

9 156.450 156.450 Boater Calling. Commercial and non-commercial.

10 156.500 156.500 Commercial

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VHF 300 Series Owner’s Manual 37

Appendix

Channel

Number

Transmission

MHz

Receiving

MHz

User

11 156.550 156.550 Commercial. VTS in selected areas.

12 156.600 156.600 Port operations. VTS in selected areas.

13 156.650 156.650 Intership navigation safety (bridge-to-bridge).

Ships greater than 20 meters in length maintain a

listening watch on this channel in US waters.

14 156.700 156.700 Port operations. VTS in selected areas.

15 -- 156.750 Environmental (receive only). Used by Class C

Emergency Position Indicating Radio Beacons

(EPIRBs).

16 156.800 156.800 International distress, safety, and calling. Ships required

to carry radio, USCG, and most coast stations maintain

a listening watch on this channel.

17 156.850 156.850 State control

18A 156.900 156.900 Commercial

19A 156.950 156.950 Commercial

20 157.000 161.600 Port operations (duplex)

20A 157.000 157.000 Port operations

21A 157.050 157.050 USA Coast Guard only

22A 157.100 157.100 Coast Guard Liaison and Maritime Safety Information

Broadcasts. Broadcasts are announced on Channel 16.

23A 157.150 157.150 USA Coast Guard only

24 157.200 161.800 Public correspondence (Marine Operator)

25 157.250 161.850 Public correspondence (Marine Operator)

26 157.300 161.900 Public correspondence (Marine Operator)

27 157.350 161.950 Public correspondence (Marine Operator)

28 157.400 162.000 Public correspondence (Marine Operator)

61A 156.075 156.075 Government only

63A 156.175 156.175 Port operations and commercial, VTS. Available only in

the New Orleans and lower Mississippi areas.

64A 156.225 156.225 Coast Guard only

65A 156.275 156.275 Port operations

66A 156.325 156.325 Port operations

67 156.375 156.375 Commercial. Used for Bridge-to-bridge communications

in lower Mississippi River. Intership only.

68 156.425 156.425 Non-Commercial

69 156.475 156.475 Non-Commercial

Draft

38 VHF 300 Series Owner’s Manual

Appendix

Channel

Number

Transmission

MHz

Receiving

MHz

User

70 156.525 156.525 Digital Selective Calling

(voice communications not allowed)

71 156.575 156.575 Non-Commercial

72 156.625 156.625 Non-Commercial (Intership only)

73 156.675 156.675 Port Operations

74 156.725 156.725 Port Operations

77 156.875 156.875 Port Operations (Intership only)

78A 156.925 156.925 Non-Commercial

79A 156.975 156.975 Commercial. Non-Commercial in the Great Lakes only.

80A 157.025 157.025 Commercial. Non-Commercial in the Great Lakes only.

81A 157.075 157.075 USA Government only. Environmental protection

operations.

82A 157.125 157.125 USA Government only

83A 157.175 157.175 USA Coast Guard only

84 157.225 161.825 Public Correspondence (Marine Operator)

85 157.275 161.875 Public Correspondence (Marine Operator)

86 157.325 161.925 Public Correspondence (Marine Operator)

87 157.375 161.975 Public Correspondence (Marine Operator)

88 157.425 162.025 Public Correspondence only near Canadian border.

88A 157.425 157.425 Commercial, Intership only

The letter “A” indicates simplex use of the ship station transmit side of an international

duplex channel, and that operations are different than international operations on that

channel. “A” channels are generally only used in the USA, and use is normally not

recognized or allowed outside the USA.

The letter “B” indicates simplex use of the coast station transmit side of an international

duplex channel. The USA does not currently use “B” channels for simplex communications

in this band.

WX (Weather) Channels

Channel Frequency (MHz)

WX1 162.55

WX2 162.4

WX3 162.475

WX4 162.425

Draft

VHF 300 Series Owner’s Manual 39

Appendix

Channel Frequency (MHz)

WX5 162.45

WX6 162.5

WX7 162.525

Canadian Channels

Channel

Number

Transmission

MHz

Receiving

MHz

Area of

Operation

User

01 156.050 160.650 PC Public correspondence

02 156.100 160.700 PC Public correspondence

03 156.150 160.750 PC Public correspondence

04A 156.200 156.200 PC Intership, Ship/Shore, and Safety:

Canadian Coast Guard search and rescue

04A 156.200 156.200 EC Intership, Ship/Shore, and Commercial:

Commercial shing only.

05A 156.250 156.250 Ship Movement

06 156.300 156.300 All areas Intership, Commercial, Non-commercial,

and Safety: May be used for search and

rescue communications between ships

and aircraft.

07A 156.350 156.350 All areas Intership, Ship/Shore, and Commercial

08 156.400 156.400 WC, EC Intership, Commercial, and Safety: Also

assigned for operations in the Lake

Winnipeg area.

09 156.450 156.450 AC Intership, Ship/Shore, Commercial,

Non-commercial, and Ship Movement:

May be used to communicate with aircraft

and helicopters in predominantly maritime

support operations.

10 156.500 156.500 AC, GL Intership, Ship/Shore, Commercial,

Non-commercial, Safety, and Ship

Movement: May also be used for

communications with aircraft engaged

in coordinated search and rescue and

antipollution operations.

11 156.550 156.550 PC, AC, GL Intership, Ship/Shore, Commercial,

Non-commercial, and Ship Movement:

Also used for pilotage purposes.

12 156.600 156.600 WC, AC, GL Intership, Ship/Shore, Commercial,

Non-commercial, and Ship Movement:

Port operations and pilot information and

messages.

Draft

40 VHF 300 Series Owner’s Manual

Appendix

Channel

Number

Transmission

MHz

Receiving

MHz

Area of

Operation

User

13 156.650 156.650 All areas Intership, Commercial, Non-commercial,

and Ship Movement: Exclusively for

bridge-to-bridge navigational trafc.

Limited to 1 watt maximum power.

14 156.700 156.700 AC, GL Intership, Ship/Shore, Commercial,

Non-commercial, and Ship Movement:

Port operations and pilot information and

messages.

15 156.750 156.750 All areas Intership, Ship/Shore, Commercial,

Non-commercial, and Ship Movement:

All operations limited to 1 watt maximum

power. May also be used for on-board

communications.

16 156.800 156.800 All areas International Distress, Safety, and Calling

17 156.850 156.850 All areas Intership, Ship/Shore, Commercial,

Non-commercial, and Ship Movement:

All operations limited to 1 watt maximum

power. May also be used for on-board

communications.

18A 156.900 156.900 All areas Intership, Ship/Shore, and Commercial:

Towing on the Pacic Coast.

19A 156.950 156.950 All areas

except PC

Intership and Ship/Shore: Canadian

Coast Guard only.

19A 156.950 156.950 PC Intership and Ship/Shore: various

Government departments.

20 157.000 161.600 All areas Ship/Shore, Safety, and Ship Movement:

Port operations only with 1 watt maximum

power.

21A 157.050 157.050 All areas Intership and Ship/Shore: Canadian

Coast Guard only.

21B - 161.650 All areas Safety: Continuous Marine Broadcast

(CMB) service.

22A 157.100 157.100 All areas Intership, Ship/Shore, Commercial, and

Non-commercial: For communications

between Canadian Coast Guard and non-

Canadian Coast Guard stations only.

23 157.150 161.750 PC Ship/Shore and Public Correspondence:

Also in the inland waters of British

Columbia and the Yukon.

24 157.200 161.800 All areas Ship/Shore and Public Correspondence

Draft

VHF 300 Series Owner’s Manual 41

Appendix

Channel

Number

Transmission

MHz

Receiving

MHz

Area of

Operation

User

25 157.250 161.850 PC Ship/Shore and Public Correspondence:

Also assigned for operations in the Lake

Winnipeg area.

25B - 161.850 AC Safety: Continuous Marine Broadcast

(CMB) service.

26 157.300 161.900 All areas Ship/Shore, Safety, and Public

Correspondence

27 157.350 161.950 AC, GL, PC Ship/Shore and Public Correspondence

28 157.400 162.000 PC Ship/Shore, Safety, and Public

Correspondence

28B - 162.000 AC Safety: Continuous Marine Broadcast

(CMB) service.

60 156.025 160.625 PC Ship/Shore and Public Correspondence

61A 156.075 156.075 PC Intership and Ship/Shore: Canadian

Coast Guard only.

61A 156.075 156.075 EC Intership, Ship/Shore, and Commercial:

Commercial shing only.

62A 156.125 156.125 PC Intership and Ship/Shore: Canadian

Coast Guard only.

62A 156.125 156.125 EC Intership, Ship/Shore, and Commercial:

Commercial shing only.

64 156.225 160.825 PC Ship/Shore and Public Correspondence

64A 156.225 156.225 EC Intership, Ship/Shore, and Commercial:

Commercial shing only.

65A 156.275 156.275 Intership, Ship/Shore, Commercial,

Non-commercial, and Safety: Search and

rescue and antipollution operations on the

Great Lakes. Towing on the Pacic Coast.

Port operations only in the St. Lawrence

River areas with 1 watt maximum power.

Pleasure craft in the inland waters of

Alberta, Saskatchewan and Manitoba

(excluding Lake Winnipeg and the Red

River).

66A 156.325 156.325 Intership, Ship/Shore, Commercial, Non-

commercial, Safety, and Ship Movement:

Port operations only in the St. Lawrence

River/Great Lakes Areas with 1 watt

maximum power.

67 156.375 156.375 EC Intership, Ship/Shore, and Commercial:

Commercial shing only.

Draft

42 VHF 300 Series Owner’s Manual

Appendix

Channel

Number

Transmission

MHz

Receiving

MHz

Area of

Operation

User

67 156.375 156.375 All areas

except EC

Intership, Ship/Shore, Commercial,

Non-commercial, and Safety: May also

be used for communications with aircraft

engaged in coordinated search and

rescue and antipollution operations.

68 156.425 156.425 All areas Intership, Ship/Shore, and Non-

commercial: For marinas and yacht clubs.

69 156.475 156.475 All areas

except EC

Intership, Ship/Shore, Commercial and

Non-commercial

69 156.475 156.475 EC Intership, Ship/Shore, and Commercial:

Commercial shing only.

71 156.575 156.575 PC Intership, Ship/Shore, Commercial, Non-

commercial, Safety, and Ship Movement

71 156.575 156.575 Intership, Ship/Shore, and Non-

commercial: For marinas and yacht clubs

on the East Coast and on Lake Winnipeg.

72 156.625 156.625 EC, PC Intership, Commercial, and Non-

commercial: May be used to

communicate with aircraft and helicopters

in predominantly maritime support

operations. For marinas and yacht clubs

on the East Coast and on Lake Winnipeg.

73 156.675 156.675 EC Intership, Ship/Shore, and Commercial:

Commercial shing only

73 156.675 156.675 All areas

except EC

Intership, Ship/Shore, Commercial,

Non-commercial, and Safety: May also

be used for communications with aircraft

engaged in coordinated search and

rescue and antipollution operations.

74 156.725 156.725 EC, PC Intership, Ship/Shore, Commercial,

Non-commercial, and Ship Movement.

77 156.875 156.875 Intership, Ship/Shore, Safety, and Ship

Movement: Pilotage on Pacic Coast.

Port operations only in the St. Lawrence

River/Great Lakes areas with 1 watt

maximum power.

78A 156.925 156.925 EC, PC Intership, Ship/Shore and Commercial

79A 156.975 156.975 EC, PC Intership, Ship/Shore and Commercial

80A 157.025 157.025 EC, PC Intership, Ship/Shore and Commercial

81A 157.075 157.075 Intership and Ship/Shore: Canadian

Coast Guard use only in the St. Lawrence

River/Great Lakes areas.

Draft

VHF 300 Series Owner’s Manual 43

Appendix

Channel

Number

Transmission

MHz

Receiving

MHz

Area of

Operation

User

81A 157.075 157.075 PC Intership, Ship/Shore, and Safety:

Canadian Coast Guard antipollution.

82A 157.125 157.125 PC Intership, Ship/Shore, and Safety:

Canadian Coast Guard use only.

82A 157.125 157.125 Intership and Ship/Shore: Canadian

Coast Guard use only in the St. Lawrence

River/Great Lakes areas.

83 157.175 161.775 PC Ship/Shore and Safety: Canadian Coast

Guard use only.

83A 157.175 157.175 EC Intership and Ship/Shore: Canadian Coast

Guard and other Government agencies.

83B - 161.775 AC, GL Safety: Continuous Marine Broadcast

(CMB) Service.

84 157.225 161.825 PC Ship/Shore and Public Correspondence

85 157.275 161.875 AC, GL, NL Ship/Shore and Public Correspondence

86 157.325 161.925 PC Ship/Shore and Public Correspondence

87 157.375 161.975 AC, GL, NL Ship/Shore and Public Correspondence

88 157.425 162.025 AC, GL, NL Ship/Shore and Public Correspondence

Key

PC: Pacic Coast

EC (East Coast): includes NL, AC, GL and Eastern

Arctic areas

WC (West Coast): Pacic Coast, Western Arctic and

Athabasca-Mackenzie Watershed areas

NL: Newfoundland and Labrador

AC: Atlantic Coast, Gulf, and St. Lawrence River up to

and including Montreal

GL: Great Lakes (including St. Lawrence above

Montreal)

All areas: includes East and West Coast areas

International Channels

Channel

Number

Transmission

MHz

Receiving

MHz

User

01 156.050 160.650 Public Correspondence, Port Operations, and Ship

Movement

02 156.100 160.700 Public Correspondence, Port Operations, and Ship

Movement

03 156.150 160.750 Public Correspondence, Port Operations, and Ship

Movement

04 156.200 160.800 Public Correspondence, Port Operations, and Ship

Movement

05 156.250 160.850 Public Correspondence, Port Operations, and Ship

Movement

06 156.300 156.300 Intership

Draft

44 VHF 300 Series Owner’s Manual

Appendix

Channel

Number

Transmission

MHz

Receiving

MHz

User

07 156.350 160.950 Public Correspondence, Port Operations, and Ship

Movement

08 156.400 156.400 Intership

09 156.450 156.450 Intership, Port Operations, and Ship Movement

10 156.500 156.500 Intership, Port Operations, and Ship Movement

11 156.550 156.550 Port Operations and Ship Movement

12 156.600 156.600 Port Operations and Ship Movement

13 156.650 156.650 Intership Safety, Port Operations, and Ship Movement

14 156.700 156.700 Port Operations and Ship Movement

15 156.750 156.750 Intership and On-board Communications at 1 watt only

16 156.800 156.800 Distress, Safety, and Calling

17 156.850 156.850 Intership and On-board Communications at 1 watt only

18 156.900 161.500 Public Correspondence, Port Operations, and Ship

Movement

19 156.950 161.550 Public Correspondence, Port Operations, and Ship

Movement

20 157.000 161.600 Public Correspondence, Port Operations, and Ship

Movement

21 157.050 161.650 Public Correspondence, Port Operations, and Ship

Movement

22 157.100 161.700 Public Correspondence, Port Operations, and Ship

Movement

23 157.150 161.750 Public Correspondence, Port Operations, and Ship

Movement

24 157.200 161.800 Public Correspondence, Port Operations, and Ship

Movement

25 157.250 161.850 Public Correspondence, Port Operations, and Ship

Movement

26 157.300 161.900 Public Correspondence, Port Operations, and Ship

Movement

27 157.350 161.950 Public Correspondence, Port Operations, and Ship

Movement

28 157.400 162.000 Public Correspondence, Port Operations, and Ship

Movement

60 156.025 160.625 Public Correspondence, Port Operations, and Ship

Movement

61 156.075 160.675 Public Correspondence, Port Operations, and Ship

Movement

Draft

VHF 300 Series Owner’s Manual 45

Appendix

Channel

Number

Transmission

MHz

Receiving

MHz

User

62 156.125 160.725 Public Correspondence, Port Operations, and Ship

Movement

63 156.175 160.775 Public Correspondence, Port Operations, and Ship

Movement

64 156.225 160.825 Public Correspondence, Port Operations, and Ship

Movement

65 156.275 160.875 Public Correspondence, Port Operations, and Ship

Movement

66 156.325 160.925 Public Correspondence, Port Operations, and Ship

Movement

67 156.375 156.375 Intership, Port Operations, and Ship Movement

68 156.425 156.425 Port Operations and Ship Movement

69 156.475 156.475 Intership, Port Operations, and Ship Movement

70 - - Reserved for DSC

71 156.575 156.575 Port Operations and Ship Movement

72 156.625 156.625 Intership

73 156.675 156.675 Intership

74 156.725 156.725 Port operations and Ship movement

75 156.775 156.775 Port operations and Ship movement

76 156.825 156.825 Port operations and Ship movement

77 156.875 156.875 Intership

78 156.925 161.525 Public correspondence, Port Operations, and Ship

Movement

79 156.975 161.575 Public correspondence, Port Operations, and Ship

Movement

80 157.025 161.625 Public correspondence, Port Operations, and Ship

Movement

81 157.075 161.675 Public correspondence, Port Operations, and Ship

Movement

82 157.125 161.725 Public correspondence, Port Operations, and Ship

Movement

83 157.175 161.775 Public correspondence, Port Operations, and Ship

Movement

84 157.225 161.825 Public correspondence, Port Operations, and Ship

Movement

85 157.275 161.875 Public correspondence, Port Operations, and Ship

Movement

Draft

46 VHF 300 Series Owner’s Manual

Appendix

Channel

Number

Transmission

MHz

Receiving

MHz

User

86 157.325 161.925 Public correspondence, Port Operations, and Ship

Movement

87 157.375 157.375 Port Operations and Ship Movement

88 157.425 157.425 Port Operations and Ship Movement

Specications

VHF 300/300i Specications

Dimensions: W × H × D: 9

× 7

× 2

in. (248 × 180 × 64 mm)

Weight: 4.177 lb. (1.895 kg)

Temperature Range: from 14ºF to 122ºF (from -10ºC to 50ºC)

Compass-safe Distance: 20 in. (500 mm)

Waterproof: IEC 60529 IPX7 (Immersion in 1 meter of water for 30 minutes)

Antenna Connector: S0-239 (50 Ω)

Digital Selective Calling: Class D

Frequency Bands: All USA, Canadian, and International marine channels; 10 NOAA

weather channels

Maximum Antenna Gain: 9 dBi

Antenna Port Impedance: 50 Ω

Power

Operating Voltage: from 10.8 to 15.6 Vdc (12 Vdc boat battery)

Current Drain:

Transmit (High Power): 6 A max

Transmit (Low Power): 2 A max

Transmitter

Frequency Error: +/- 500 Hz

Transmit Power (at 13.6 Vdc):

High Power: 25 W (23–25 W)

Low Power: 1 W (.7–1 W)

Maximum Deviation: 5 kHz

Hum and Noise: -40 dB or less

Modulation Distortion: 10% or less

Draft

VHF 300 Series Owner’s Manual 47

Appendix

Adjacent Channel Power: -70 dBc or less

Conducted Spurious Emission: -36 dBm or less

Receiver

Audio Distortion: Less than 10%

Hum and Noise: Less than -40 dB

Squelch Operation: Less than 107 dBm at tight setting

Adjacent Channel Rejection: 70 dB or more

Spurious Response: 70 dB or more

Inter-modulation Response: 70 dB or more

Audio

Full-function Handset:

Impedance: 4 Ω

Input Power: 4 W

External Speaker:

Output Power: 4 W (4 Ω/max)

VHF 300/300i AIS Specications

Dimensions: W × H × D: 9

× 7

× 2

in. (248 × 180 × 64 mm)

Weight: 4.177 lb. (1.895 kg)

Temperature Range: from 14ºF to 122ºF (from -10ºC to 50ºC)

Compass-safe Distance: 20 in. (500 mm)

Waterproof: IEC 60529 IPX7 (Immersion in 1 meter of water for 30 minutes)

Antenna Connector: S0-239 (50 Ω)

Digital Selective Calling: Class D

Frequency Bands: All USA, Canadian, and International marine channels; 10 NOAA

weather channels

Maximum Antenna Gain: 9 dBi

Antenna Port Impedance: 50 Ω

Power

Operating Voltage: from 10.8 to 15.6 Vdc (12 Vdc boat battery)

Current Drain:

Transmit (High Power): 6 A max

Transmit (Low Power): 2 A max

Draft

48 VHF 300 Series Owner’s Manual

Appendix

Transmitter

Frequency Error: +/- 500 Hz

Transmit Power (at 13.6 Vdc):

High Power: 25 W (23–25 W)

Low Power: 1 W (.7–1 W)

Maximum Deviation: 5 kHz

Hum and Noise: -40 dB or less

Modulation Distortion: 10% or less

Adjacent Channel Power: -70 dBc or less

Conducted Spurious Emission: -36 dBm or less

Receiver

Audio Distortion: Less than 10%

Hum and Noise: Less than -40 dB

Squelch Operation: Less than 107 dBm at tight setting

Adjacent Channel Rejection: 70 dB or more

Spurious Response: 70 dB or more

Inter-modulation Response: 70 dB or more

AIS Receiver

Adjacent Channel Rejection: 70 dB or more

Spurious Response: 70 dB or more

Inter-modulation Response: 70 dB or more

Audio

Full-function Handset:

Impedance: 4 Ω

Input Power: 4 W

External Speaker:

Output Power: 4 W (4 Ω/max)

VHF 300 Series and VHF 300 AIS Series Auxiliary Component

Specications

Hailer Output Power: 30 W max

Hailer Horn Impedance: 4 Ω

Draft

VHF 300 Series Owner’s Manual 49

Appendix

NMEA (VHF 300 models and VHF 300 AIS models)

NMEA 0183 IN Sentences Supported (NMEA 0183 version 3.01)

Sentence Denition

GGA Global Positioning System Fix Data

GLL Geographic Position - Latitude/Longitude

GNS GNSS Fix Data

RMA Recommended Minimum Specic Loran-C Data

RMB Recommended Minimum Navigation Information

RMC Recommended Minimum Specic GNSS Data

NMEA 0183 OUT Sentences Supported (NMEA 0183 version 3.01)

Sentence Denition

DSC DSC Information

DSE Expanded DSC

VDM* AIS Information

NMEA 2000 PGN Information

Receive Transmit

059392 ISO Acknowledgement 059392 ISO Acknowledgement

059904 ISO Request 060928 ISO Address Claim

060928 ISO Address Claim 126208 NMEA Request/Command/Ack

126208 NMEA Request/Command/Ack 126464 PGN List

129026 COG/SOG, Rapid Update 126996 Product Information

129029 GNSS Position Data 129799 Radio Frequency/Mode/Power

129808 DSC Call Information 129038* AIS Class A Position Report

129039* AIS Class B Position Report 129040* AIS Class B Extended Position

Report

129794* AIS Class A Static and Voyage

Related Data

129798* AIS SAR Aircraft Position Report

* VHF 300 AIS models only

Draft

50 VHF 300 Series Owner’s Manual

Appendix

GHS 10 and GHS 10i Specications

Dimensions: 6

× 2

× 1

in. (161 × 71.6 × 42.8 mm)

Weight: 12.98 oz. (368 g)

Temperature Range: from 14ºF to 122ºF (from -10ºC to 50ºC)

Compass-safe Distance: 20 in. (500 mm)

Waterproof: IEC 60529 IPX7 (Immersion in 1 meter of water for 30 minutes)

Contact Garmin

Contact Garmin Product Support if you have any questions while using your VHF 300 series radio. In the USA,

go to www.garmin.com/support, or contact Garmin USA by phone at (913) 397.8200 or (800) 800.1020.

In the UK, contact Garmin (Europe) Ltd. by phone at 0808 2380000.

In Europe, go to www.garmin.com/support and click Contact Support for in-country support information, or

contact Garmin (Europe) Ltd. by phone at +44 (0) 870.8501241.

Caring for the Unit

The case is constructed of high quality materials and does not require user maintenance, except cleaning.

Cleaning the Case

Clean the unit’s outer casing (except for the screen) using a cloth dampened with a mild detergent solution and

then wipe dry. Avoid chemical cleaners and solvents that may damage plastic components.

Cleaning the Screen

The unit’s lens is textured to reduce glare, and is sensitive to skin oils, waxes and abrasive cleaners. Cleaners

containing ammonia, alcohol, abrasives, or anti-grease detergents will harm the anti-reective coating. It is

important to clean the lens using an eyeglass lens cleaner (that is specied as safe for anti-reective coatings)

and a clean, lint-free cloth.

Water Immersion

The unit is waterproof to IEC Standard 60529 IPX7. It can withstand immersion in 1 meter of water for 30

minutes. Prolonged submersion can cause damage to the unit. After submersion, be certain to wipe and air dry

the unit before reuse.

Draft

VHF 300 Series Owner’s Manual 51

Index

Symbols

16/9 mode 7

1 W power transmission 8

25 W power transmission 8

AIS

See Automatic Identication System

alarms

battery 35

GPS data 35

invalid GPS data 35

WX (weather alert) 35

ATIS 12

disabled functions with 12

disabling 13

enabling 13

entering identication number 13

viewing identication number 13

Automatic Identication System

disabling 28

enabling 28

autopilot capabilities 29

auto power-on 31

backlight level 31

beeper volume 31

bypassing 1 W transmission power 5

call logs

deleting entries 24

placing calls from 24

saving vessels to directory 24

types of 23

viewing stored calls 23

channel changing, automatic 27

channel monitoring

Dual watch 7

Tri watch 7

channels

Canadian 39

changing names of 34

International 43

removing saved status 6

saving 5

scanning all 5

scanning saved 6

selecting 4

USA 36

WX (weather) 38

chartplotter capabilities 29

cleaning

case 50

screen 50

communication playback 6

contrast level 31

course over ground, displaying 32

Digital Selective Calling 14–28

Garmin GARVHF3 Fixed Mount Class D DSC VHF Marine Radio User Manual 1

Garmin International Inc Fixed Mount Class D DSC VHF Marine Radio 1

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