Navico VHFRS20 User Manual

Link-6

User Guide

ENGLISH

lowrance.com

Preface

Disclaimer

As Navico is continuously improving this product, we retain the
right to make changes to the product at any time which may not
be reflected in this version of the manual. Please contact your
nearestdistributor if you require any further assistance.

It is the owner’s sole responsibility to install and use the equipment
in a manner that will not cause accidents, personal injury or
property damage. The user of this product is solely responsible for
observing safe boating practices.

NAVICO HOLDING AS AND ITS SUBSIDIARIES, BRANCHES AND
AFFILIATES DISCLAIM ALL LIABILITY FOR ANY USE OF THIS PRODUCT
IN A WAY THAT MAY CAUSE ACCIDENTS, DAMAGE OR THAT MAY
VIOLATE THE LAW.

Governing Language: This statement, any instruction manuals,
user guides and other information relating to the product
(Documentation) may be translated to, or has been translated from,
another language (Translation). In the event of any conflict between
any Translation of the Documentation, the English language
version of the Documentation will be the official version of the
Documentation.

This manual represents the product as at the time of printing.
Navico Holding AS and its subsidiaries, branches and affiliates
reserve the right to make changes to specifications without notice.

2 |

Copyright

Copyright © 2017 Navico Holding AS.

Warranty

The warranty card is supplied as a separate document.

In case of any queries, refer to the brand website of your unit or
system: www.lowrance.com

RF Emissions notice

This equipment complies with FCC radiation exposure limits set
forth for an uncontrolled environment. This device’s antenna must
be installed in accordance with provided instructions; and it must
be operated with minimum 1.8 m spacing between the antennas
and all person’s body (excluding extremities of hands, wrist and feet)

| Link-6 operator manual

during operation. Further, this transmitter must not be co-located or
operated in conjunction with any other antenna or transmitter.

FCC Statement

This device complies with Part 15 of the FCC Rules. Operation
is subject to the following two conditions: (1) this device may
not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause
undesired operation.

¼ Note: This equipment has been tested and found to comply with

the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference in a normal installation. This equipment
generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or televi­sion reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference
by one or more of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment into an output on a circuit different

from that to which the receiver is connected.

Consult the dealer or an experienced technician for help.

A shielded cable must be used when connecting a peripheral to

the serial ports.

Innovation, Science and Economic
Development Canada Compliance

This equipment complies with ISEDC RF radiation exposure limits
set forth for an uncontrolled environment. This transmitter must not
be co-located or operating in conjunction with any other antenna
or transmitter. This equipment should be installed and operated
with minimum distance 1.8m between the radiator & your body.

ISEDC exposition aux radiations:

Cet équipement est conforme avec ISEDC les limites d’exposition
aux rayonnements définies pour un contrôlé environnement.

Cet émetteur ne doit pas être co-localisés ou fonctionner en

| Link-6 operator manual

| 3

conjonction avec une autre antenne ou émetteur.

Cet équipement doit être installé et utilisé avec un minimum de 1.8
m de distance entre le radiateur et votre corps.

CE Compliance Statement

This product complies with CE under RED directive 2014/53/EU.
The relevant Declaration of Conformity is available in the following
website under model documentation section:
http://www.lowrance.com

Warning

The user is cautioned that any changes or modifications not
expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment. This equipment
generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is
no guarantee that the interference will not occur in a particular
installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment and receiver

• Connect the equipment into an outlet on a circuit different from

that of the receiver

• Consult the dealer or an experienced technician for help

4 |

| Link-6 operator manual

Countries of intended use in the EU

AT - Austria HU - Hungary PL - Poland

BE - Belgium IS - Iceland PT - Portugal

BG - Bulgaria IE - Ireland RO - Romania

CY - Cyprus IT - Italy SK - Slovak Republic

CZ - Czech Republic LV - Latvia SI - Slovenia

DK - Denmark LI - Liechtenstein ES - Spain

EE - Estonia LT - Lithuania SE - Sweden

FI - Finland LU - Luxembourg CH - Switzerland

FR - France MT - Malta TR - Turkey

DE - Germany NL - Netherlands UK - United Kingdom

GR - Greece NO - Norway

Trademarks

Lowrance® and Navico® are registered trademarks of Navico.

NMEA® and NMEA 2000® are registered trademarks of the National
Marine Electronics Association.

Navico recommends that you check the radio operating licensing
requirements of your country before using this VHF radio. The
operator is solely responsible for observing proper radio installation
and usage practices.

Notes on MMSI and DSC

The user MMSI (Marine Mobile Service Identity) is a unique nine
digit number. It is used on marine transceivers that are capable of
using DSC (Digital Selective Calling). Digital Selective Calling offers
significant safety and convenience advantages over older VHF radios
without this functionality.

¼ Note: many countries do not have radio repeaters that support DSC

message relaying. However DSC can still be useful for direct ship-to­ship communication, where the other vessel is also equiped with a
DSC capable radio.

You must obtain a user MMSI and enter it into your radio in order to
use the DSC functions. Contact the appropriate authorities in your
country to obtain an MMSI number - charges may apply. If you are
unsure who to contact, consult your Lowrance dealer.

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| 5

¼ Note: DSC distress calls generated by this radio are limited to the

same range restrictions that apply to regular VHF transmissions. The
vessel sending a distress can only rely upon DSC if within range of a
GMDSS Coast Radio Station. Typical VHF range may be about 20NM,
though this varies greatly depending upon installation, antenna
type, meteorological conditions, etc.

About this manual

This manual is a reference guide for installing and operating a Link-6
VHF radio. Important text that requires special attention from the
reader is emphasized as follows:

¼ Note: Used to draw the reader’s attention to a comment or some

important information.

Warning: Used when it is necessary to warn personnel that

!

they should proceed carefully to prevent risk of injury and/or
damage to equipment/personnel.

6 |

| Link-6 operator manual

Contents

8 General Information

9 How to display and navigate menus
12 Key functions

15 The radio menus

15 Scan menu
16 Watch
17 Display
17 Radio setup
20 DSC setup
23 Alarms
24 Reset

25 DSC call menu

25 DSC calls
27 Track buddy
28 Contacts

30 My channels

31 Shortcuts

32 Installation

32 Checklist
33 Installation options
33 Selecting a suitable mounting location
37 First startup configuration

40 Specications

43 Channel Charts

43 EU and INTERNATIONAL channel chart
51 USA channel chart
53 CANADA Channel Chart

Contents | Link-6 operator manual

| 7

1

General Information

Your Link-6 provides the following useful features:

• Prominent channel display

• Adjustable contrast settings for the LCD

• Adjustable keypad backlighting for easy night-time use

• Waterproof and submersible to comply with IPx7

• GPS latitude and longitude (LL) and time display (when connected

to a GPS source)

• Choice of High (25 W) or Low (1 W) transmission power

• 4 key handset mic with built-in speaker

• Powerful 4 W external audio output

• Access to all currently-available marine VHF channel banks (USA,

Canada, International) including weather channels where available
(model dependant)

• Dedicated CH16/9 key for quick access to the priority (international

distress) channel

• TRI key to select DUAL/TRI scan

• Dedicated Wx (Weather) key

• DSC (Digital Selective Calling) capability that meets Global DSC

Class D Standards

• Separate CH70 receiver included built in

• DISTRESS call button to automatically transmit the MMSI and

position until an acknowledgement is received

• Contacts list that stores up to 50 names with MMSI numbers

• MMSI storage for three favourite groups

• Group Call and All Ships Call facility

• LL position polling information

• Weather alert facility where available (US mode)

• ATIS facility for inland waterways (EU mode)

• With DSC Auto-Switch disable and DSC Test function

8 |

General Information | Link-6 operator manual

How to display and navigate menus

The majority of the buttons, and both of the rotary knobs, can open
menus with multiple options.

The channel knob is used to scroll through the options. The
currently selected option is indicated by a black highlight bar, and
the text is inverted to white.

Selection of a highlighted option is made by pressing the channel
knob.

If a list of options is too long for the page, a scroll bar is shown on
the right side of the screen. The black rectangle on the scroll bar
indicates the highlighted options relative position in the list.

scroll bar indicates further
options above and below
displayed text

Press the Exit button to step backwards to the previous menu page,
or exit the menus completely.

Entry of alphanumeric data

Rotate the channel knob to scroll through the alphanumeric
characters.

Press channel knob, to select and step to the next character.

To step backwards, press the MENU button. Press X to cancel entry
and return to previous menu.

LCD symbols and meanings

When the Link-6 starts up it momentarily displays the brand, model,
region, software version, and MMSI.

General Information | Link-6 operator manual

| 9

During normal operation, the following icons may be displayed on
the screen depending on setup:

Symbol Meaning

Transmitting

Transmition power

Weather channel stored by user (EU/INT only)

Weather alert enabled

Receiver Busy with incoming signal

Missed DSC call

Duplex channel selected (off when Simplex)

Local mode enabled (used when in areas of high radio
traffic, ie inner harbour)

DSC functionality is enabled

DSC functionality is enabled, auto switching is turned
off

EU models only - must be enabled when in European
inland waterways

Low Battery warning (activates at 10.5 V)

10 |

Channel bank is set to USA

Channel bank is set to International. (Channels
available depends on country radio cloned for)

Channel bank is set to Canada

Weather channel bank active (USA/CAN) replaces
channelbank icon temporarily

Channel is saved in the MY CHANNELS list

Track your Buddy feature is active

TRI watch or DUAL scan is active

GPS simulator is active

General Information | Link-6 operator manual

A typical display:

1.

Channel is set to high power transmit

Missed call in the DSC call log

2.

3. Channel is busy

4.

Volume is under active control

Current channel saved in ‘My Channels’

5.

6.

Track your buddy is enabled

7.

Current channel will be skipped during a scan

8.

Volume level indicator

Time (derived from GPS) - UTC offset is applied

9.

10.

Latitude/Longitude

11.

Squelch level indicator

Channel number (2 or 4 digits)

12.

The USA channel bank is active

13.

DSC functionality is enabled, but autoswitch is off

14.

15.

Weather alert function is enabled

General Information | Link-6 operator manual

| 11

12 |

Key functions

The following describes the direct functions of the keys/knobs.
Where necessary, additional detail on any menus accessed by keys is
covered in following chapters.

11

12

13

4

1

3

9

2

5 6 7 8 9 10

1.

Channel knob / Press to Select

Tur n knob for channel selection, menu scrolling, alphanumeric entry, and
fine adjustment of backlight level (dependent on active menu).

Short press to make selections in menus.
Long press to open MY CHANNELS.

2.

VOL / SQL
Volume and Squelch level.
Short press knob to select which control to adjust. Which is currently
selected is indicated by a small triangular arrow above the level bar for
each option. Turning the knob clockwise increases setting, anti-clockwise
decreases it.
Long press to open SHORTCUTS.

EXIT

3.

Press EXIT when navigating menus, to clear incorrect entries, to exit from a
menu without saving changes, and to back up to the previous screen.

DSC CALL / MENU SELECT

4.

Short press to enter the DSC Call Menu and make DSC calls.
Long press to open the MENU SELECT page.

Power / Backlight

5.

Short Press to adjust backlight level sequentally.
Repeated short press of the power button will step through large backlight
adjustments. The Channel knob can be used to make finer adjustments.
Long press to turn radio on or off.

Weather Channel

6.

Short press (US/CAN models): press to hear the most recently selected
NOAA/Canadian weather station.
For all other models, changes channel to user programmed choice.
Long press (non US/CAN models only): to store current channel as the

General Information | Link-6 operator manual

weather channel.

7.

SCAN

Short press to enter ALL SCAN mode.
ALL SCAN sequentially scans all channels for activity.
When a signal is received, scanning stops at that channel and the BUSY icon
appears on the screen. If the signal ceases for more than 5 seconds, the
scan automatically resumes.
Turn the channel knob to temporarily skip over (lock out) a busy channel
and resume the scan. The direction turned determines if the scan goes
up or down the channel numbers (ie ‘forward’ or ‘reverse’). If it is still busy
when the scan completes a full cycle, it will stop again at this channel. Note
that it is not possible to skip over the priority channel.
Press ENT to permanently skip over the channel. The SKIP icon will show on
the LCD for this channel.
To cancel a skipped channel, select the channel while in normal mode
(non-scan mode) then press the ENT key - the SKIP icon will disappear.
Repowering the radio also restores all skipped channels.
Press SCAN or EXIT while scanning is active to stop at the current channel
and return to normal operation.
Long press SCAN from normal operation to enter the SCAN menu.

8.

TR I (WATCH)

Short press to start DUAL WATCH or TRI WATCH (if ‘watch’ channel set)
Long press to set the current channel as the watch channel.

When a short press is made on the TRI key, the radio will either switch to
DUAL or TRI watch mode depending on whether a watch channel has
been setup.
Without a watch channel the radio will go to DUAL WATCH, where the
channels ‘watched’ are the current channel and the priority channel (the
distress channel, CH16 for most countries).
With a watch channel selected, TRI WATCH is enabled, where the channels
‘watched’ are the current channel the ‘watch’ channel, and the priority
channel (the distress channel, CH16 for most countries).
If the radio is set to ‘Country: USA’, two priority channels are watched ­Channel 9 and Channel 16.

9.

16 / 9 (radio and handset)

Short press to change to priority channel. Press again to return to original
channel.
For US models: Long press to make Channel 09 the priority channel.
The default Priority Channel is CH16.

DISTRESS

10.

Short press to start a distress call, where the nature of distress can be
selected from a list.
Long press the distress button to initiate an ‘undesignated’ distress call.
This call is broadcast to all DSC equipped radios, so will create an alarm on
every DSC radio within range.
If position information is available it will be included in the transmition.

General Information | Link-6 operator manual

| 13

H/L

11.

(handset mic only)

Transmission Power.
Press to toggle between high (25 W) or low (1 W) transmission power for
the entire channel bank. The HI or LO selection is shown on the LCD.
Some channels allow only low power transmissions. Error beeps will sound
if attempting to change the transmission power while on one of these
channels.
Some channels allow only low power transmissions initially, but can be
overridden to high power by pressing (and holding) H/L after depressing
PTT. Keep the H/L button pressed down after releasing the PTT button, if
wanting to transmit again on high power.

12. +

(handset mic only)

/ -

Channel change.
Short press (+) goes up one channel, or (-) goes down one channel.
Holding either key will, after a short delay, step rapidly through the
channels.

13. PTT (handset mic only)

Push-to-talk button.
Press button to transmit. Only depress for duration of message to be

broadcast. Radio can’t receive while it is transmitting.

14 |

General Information | Link-6 operator manual

2

The radio menus

A long press of the MENU button opens MENU SELECT page. The
following shows the menu structure (top and 2nd level only):

ALL SCAN
ALL CHANNELS + 16

SCAN

WATCH

DISPLAY

RADIO SETUP

DSC SETUP

ALARMS

RESET

MY CHANNELS
MY CHANNELS + 16
EDIT MY CHANNELS (choose channels)

DUAL WATCH
TRI WATCH
SET WATCH CHANNEL (choose channel)

TIME DISPLAY (ON / OFF)
POS DISPLAY (ON / OFF)
COG/SOG (ON / OFF)
BACKLIGHT (0-10)
CONTRAST (0-10)

SENSITIVITY (DISTANT/LOCAL)
UIC (USA/INT’L/CANADA)
POWER OUTPUT (HIGH/LOW)
CH NAME (>)
KEY BEEP (0-10)
UNITS (>)
INT SPEAKER (ON/OFF)
EXT SPEAKER (ON/OFF)
GPS (>)
TIME (>)
VESSEL CALLSIGN (>)

DSC FUNCTION (X)
USER MMSI (>)
ATIS FUNCTION (ON/OFF)
SEA/INLAND USE (SEA/INLAND)
ATIS MMSI (>)
GROUP SETUP (>)
INDIVIDUAL ACKN. (AUTO/MANUAL)
POS ACKNOWLEDGE (>)
AUTO SWITCH (ON/OFF)
TEST ACKNOWLEDGE (AUTO/MANUAL)
RX DISTR WHILE OFF (X)
TIMEOUT (>)

GPS ALERT (>)
WX ALERT (>)
DSC ALARM (>)

(YES/CANCEL)

(EU cloned radio only)
(EU cloned radio only)
(EU cloned radio only)

(US cloned radio only)

Key:

(>) further menu options

(X) toggle selection. ‘X’ means option enabled.

Scan menu

This menu is for choosing a scan mode to enable, as well as
selection of the channels scanned per the MY CHANNELS list.

¼ Note: Scanning is not available if ATIS mode is turned on.

All scan

Scans all channels cyclically.

All channels + 16

Scans all channels cyclically, but checks the priority channel after
every channel step

The radio menus | Link-6 operator manual

| 15

My channels

Scan all channels selected in EDIT MY CHANNELS

My channels + 16

Scans all channels selected in EDIT MY CHANNELS, while also
checking the priority channel after every channel step.

Edit my channels

Allows creation of a custom list of channels - used in a MY
CHANNELS scan.

Watch

This menu is for choosing a watch mode to enable, as well as
selection of the watch channel. Watch modes can be thought of as
a channel scan on a subset of channels, where scanned channels
are ‘listened’ to briefly every 3 seconds, to determine if there is any
active radio communication.

16 |

¼ Note: Watch modes are not available if ATIS mode is turned on.

Dual watch

Select this to watch the current channel and the priority channel
(Channel 16).

TRI watch

Select this to watch the current channel, the user selected ‘watch’
channel, and the priority channel (Channel 16).

Set Watch Channel

Allows a watch channel to be selected from all available channels.
Selected channel is used by TRI WATCH mode.

¼ Note: If the radio is configured for USA market, two priority channels

are watched: Channel 9 and Channel 16.

The radio menus | Link-6 operator manual

Display

This menu allows the user to partially customize the screen
information displayed, and adjust the screen for best visibility to suit
the user and operating conditions.

Time display

Select to switch the display of Time to ON or OFF.
If turned ON, the display of COG/SOG is turned off, due to screen
space constraints.

LOC (Local Time) is displayed below the time if a UTC (Coordinated
Universal Time) offset has been entered; otherwise UTC is shown in
it’s place if no offset has been applied.

POS display

Select to switch ON or OFF the display of position provided from
connected GPS.

COG/SOG

Select to switch ON or OFF the display of COG/SOG provided from
connected GPS.

If turned ON, Time display is turned OFF, due to screen space
constraints.

Backlight

Select to make adjustment to the backlight level using the Channel
knob. Range is OFF, then 1 to 10.

Contrast

Select to make adjustment of the screens contrast, using the
Channel knob. Range is 00 to 10.

Radio setup

The Radio setup menu covers settings that are typically configured
at installation, and seldom need changing.

Local/Dist

Use LOCAL/DIST to improve the sensitivity of the receiver either
locally (LOCAL) or over distances (DIST).

LOCAL is not recommended for use in open sea conditions. It is
designed for use in areas of high radio noise; for example, close to a

The radio menus | Link-6 operator manual

| 17

busy port or city.

UIC

Select between USA, International or Canadian channel banks. The
selected channel bank is displayed on the LCD along with the last
used channel. All the channel charts are shown in “Channel Charts”
on page 43.

¼ Note: UIC may not be available on all models.

Power output

Select to toggle between high (25 W) or low (1 W) transmission
power for the entire channel bank. The HI or LO selection is shown
on the LCD. Low power transmission draws significantly less current
(about 1/4) from the battery, so is recommended for short range
communication, and where battery capacity is limited.

¼ Note: some channels can’t be switched to high power, and will

show LO regardless of power output setting in menu.

CH name

CH NAME gives you the option to edit or delete the channel name
descriptions displayed on the screen.

Select to edit the existing description of the channel currently in
use. It can be a maximum of 12 characters long.

18 |

Key beep

Select to allow adjustment of key beep volume.

Volume can be set from 00 - 10 (where 00 is off, and 10 is loudest).

Units

Select SPEED to choose whether displayed in KNOTS, MPH, or KPH

Select COURSE to toggle between displaying in MAGNETIC or TRUE.
A true north heading is corrected for magnetic declination. A
magnetic north heading source must also output magnetic
variation data if the heading is to be displayed as a true north value.

Int speaker

Select to switch the radio’s internal speaker ON or OFF.
Incoming voice calls and audible DSC alerts are prevented, but key
beeps and alarms will still be audible.

The radio menus | Link-6 operator manual

Ext speaker

Select to switch the radio’s external speaker ON or OFF.
Incoming voice calls and DSC alerts are prevented, but key beeps
and alarms will still be audible.

GPS

MANUAL

Select MANUAL to enter a GPS position (and time) from another
source when radio is not receiving position data from an external
antenna, or no antenna is connected.
The manually entered GPS position can be used in DSC calls.

If POS Display is turned ON, the latitude and longitude are shown on
the screen with a prefix ‘M’ indicating manual entry.

¼ Note: The manual entry is cleared if a real GPS position is received

via the NMEA 0183 port.

CHECKSUM

Select to toggle on or off. When enabled, data will be ignored if
checksum does not match (ie no tolerance to data corruption).

GPS SIM

Select to toggle ON or OFF.

Whenever the GPS Simulator is turned ON, simulated Speed Over
Ground (SOG), Course Over Ground (COG), and LL position appear
on the screen. This is for the purpose of demonstration only. The SIM
icon is displayed to warn the user it is in this mode.

¼ Note: It is not possible to send a DSC transmission when in Simulator

mode.

¼ Note: The GPS Simulator is set to OFF whenever the radio has the

power cycled, or real GPS data is available through the COM port.

Time

Time Oset

Select TIME OFFSET to enter the difference between UTC and local
time. 15 minute increments can be used with a maximum offset of
±13 hours. Does not automatically adjust for Daylight Savings Time.

The radio menus | Link-6 operator manual

| 19

Time Format

Select to toggle between 12 and 24 hour format.

Vessel call sign

Select to enter vessel callsign. Not used by radio - purely for record
keeping purposes.

DSC setup

DSC Function

It’s recommended DSC functionality is always enabled, unless
operating the vessel in an ATIS region. An MMSI number must be
entered in radio before the DSC function can be enabled.

User MMSI

Enter an MMSI number to access the radio’s DSC functionality. This
unique identifier must be supplied a local radio spectrum authority.
DO NOT enter a random ‘made up’ number.

¼ Note: Contact a Lowrance dealer if you need to change your MMSI

after initial input.

ATIS function (EU ATIS radios only)

ATIS must be enabled when navigating inland waterways in
signatory countries of the RAINWAT agreement. It should NOT be
used outside these regions. DSC functionality is not possible when
ATIS is turned on.

20 |

Sea/Inland mode (EU ATIS radios only)

Toggles between DSC (Sea) and ATIS (Inland) modes. Does not allow
both to be selected at the same time.

ATIS ID (EU ATIS radios only)

Enter an ATIS number to access the radio’s ATIS functionality. This
unique identifier must be supplied a local radio spectrum authority.
DO NOT enter a random ‘made up’ number.

¼ Note: Contact a Lowrance dealer if you need to change your ATIS ID

after initial input.

The radio menus | Link-6 operator manual

Individual acknowledge (“INDIVIDUAL ACK”)

The radio can be configured to automatically acknowledge an
incoming call, or require manual intervention:

AUTO

Sends an automatic acknowledgement to caller, and after 10
seconds, sets radio to the requested channel, ready for conversation.
US model default.

MANUAL

Operator must manually choose to send acknowledgement, as well
as change to requested channel. EU model default.

¼ Note: this does not apply for Routine Calls.

Position request acknowledge (“POS ACK”)

The radio can be configured to automatically acknowledge
an incoming position request, require manual intervention to
acknowledge, or simply ignore them:

AUTO

Sends current position automatically to calling radio.

MANUAL

Operator must manually choose to send position information.

OFF

All incoming position requests are ignored.

Auto channel switch (“AUTO SWITCH”)

When a DSC call is received, it may include a request to change to
a specific channel for subsequent communications. If a channel
switch request is included, your options are:

• allow the radio to switch to the requested channel immediately
by pressing SELECT, or

• do nothing to allow the radio to automatically switch to the
requested channel after a delay of 10 seconds, or

• cancel the automatic switch and remain on the current channel
by pressing the X button.

However, automatic switching to a subsequent communications
channel on receipt of a DSC call might in some cases disrupt
important ongoing communications if the working channel
changes without the operator knowing.

The radio menus | Link-6 operator manual

| 21

Automatic switching can be prevented for the current working
channel by setting the AUTO SWITCH feature to OFF.

Test acknowledge (“TEST ACK”)

The radio can be configured to automatically acknowledge an
incoming test call, or require manual intervention:

MANUAL

Operator must manually choose to send acknowledgement, or
cancel.

AUTO

The DSC test call is automatically acknowledged after a 10 second
delay.

Receive distress while o

Enabling this feature will allow the radio to raise an alert for DSC
distress calls, even when the DSC feature is turned off. This will work
regardless of whether or not an MMSI number has been entered.

Timeout

An inactivity timeout can be set up to return the radio to normal
operational mode when no activity is seen from the radio operator.
Different timers are used depending on the radios current state.

AUTO

These timers are used when the radio is engaged in a DSC call.
Distress calls have a discreet timer from that used for all other DSC
calls.

Distress
Select between NONE, 5 MINS, and 10 MINS
(default is NO TIMEOUT).
Non Distress
Select between NONE, 10 MINS, and 15 MINS.
(default is 15 MINS).

22 |

MANUAL

This timer are used when the radio is in any menu.

Select between NONE, 10 MINS, and 15 MINS.

(default is 10 MINS).

The radio menus | Link-6 operator manual

Alarms

GPS alert

The GPS alert is a warning to the user that there is either no GPS
connected, or the connected GPS is not outputting position data.
It comprises of an audible alarm and visual alarm (screen flash and
warning text);

GPS alert function

Turns ON or OFF all alerts for missing GPS data, including audible
alarm, screen flash, and warning text.

Alert volume

Select between HIGH, LOW, and OFF.

Screen ash

Select between ON and OFF.

WX alert (US/CAN models only)

The WX alert is a warning to the user that a special weather station
alert has been received.
It comprises of an audible alarm and visual alarm;

WX alert function

Turns ON or OFF the radios response to weather alerts, including the
audible alarm and screen flash.

Alert volume

Select between HIGH, LOW, and OFF.

Screen ash

Select between ON and OFF.

DSC Alarm

The alert volume and screen flash for some incoming call types can
be altered.
SAFETY, ROUTINE and URGENCY calls can individually be set to have:

Alert volume

HIGH, LOW or OFF.

Screen ash

ON or OFF.

The radio menus | Link-6 operator manual

| 23

¼ Note: it is not possible to alter distress call alert settings

Reset

Use this setting to return every setting to the factory defaults except
all MMSI settings, entries in your buddy list and any customized
channel names.

24 |

The radio menus | Link-6 operator manual

3

DSC call menu

DSC (Digital Selective Calling) is a semi-automated method of
establishing VHF, MF, and HF radio calls. One big advantage that
DSC enabled radios offer is that they can receive calls from another
DSC radio without being on the same channel as the calling radio.
The calling radio will provide details on what channel to switch to
so that voice communication can be established. There are various
types of DSC calls - the type of call made determines information
sent with the call, and how other radios respond to the incoming
call.

The following options are available when the DSC button is pressed;

DSC calls

There are four call types, as well as related options, that can be
accessed from this menu;

Individual

Used to place a call to a single other vessel.

The call can be initiated by selected an existing vessel in the
CONTACTS; by entering in a new vessel’s MMSI (MANUAL); or by
selecting a vessel in the RECENT list.

When the SEND TO page is displayed, turn the channel knob to
select the channel to use for voice communication.

Distress

The distress menu can be accessed via the DSC Calls menu, or
directly by a short press of the Distress key on the front of the radio.

The nature of the distress call must be selected from the list of
options - this will be displayed on other radios receiving the call.

After the Distress Call is sent, the radio waits for an
acknowledgment.

DSC call menu | Link-6 operator manual

| 25

The Distress Call is automatically re-sent every 3.5 to 4.5 minutes
until a distress acknowledgement is received.

Alternatively the operator can select:
RESEND (under OPTION - access by pressing the Menu/DSC button)

used to immediately resend the Distress Call
PAUSE (under OPTION - access by pressing the Menu/DSC button)

used to pause the automatic Distress Call resend timer
CANCEL (press ‘X’ button) to cancel the Distress Call

If a distress cancel is sent, the display shows PTT --> REASON,
prompting the operator to state the reason for the cancellation.

After a DISTRESS ACK is received, the alert should be silenced, and
the reason for distress should be clearly stated, pressing the ‘PTT’ on
the MIC and talking.

The following information (if available) is contained in the Distress
Call:

• Nature Of Distress (if selected)

• Position information (the latest GPS or manual input position is held

for 23.5 hours, or until the power is turned OFF).

26 |

Group

Used to place a call to a known group of vessel, all using the same
‘Group Call ID’ (GCID) number.

The call can be initiated by selecting an existing group from the
group list, by entering a new GCID, or by selecting a group from the
RECENT list.

When the SEND TO page is displayed, turn the channel knob to
select the channel to use for voice communication.

DSC call menu | Link-6 operator manual

All ships

Used to place a call to ALL DSC equiped vessels in range, much like
a distress call. The nature of the call must be selected, and can be
either SAFETY or URGENCY.

When the SEND TO page is displayed, turn the channel knob to
select the channel to use for voice communication.

Call logs

Shows a record of SENT, RECEIVED, and DISTRESS calls.

POS request

Used to send a postion request to another vessel. The call can
be initiated by selected an existing vessel in the CONTACTS, by
entering in a new vessel’s MMSI (MANUAL), or by selecting a vessel
in the RECENT list.

As no voice communication is required, no option is given to select
a ship-ship channel.

POS report

Used to send a position report to the vessel being called.

DSC test

Used to place a TEST call to a single other vessel. The call can
be initiated by selected an existing vessel in the CONTACTS, by
entering in a new vessel’s MMSI (MANUAL), or by selecting a vessel
in the RECENT list.

Comms channel selection is not possible.

MMSI/GPS

Shows entered MMSI number and GPS fix information.

Track buddy

Up to 5 vessels from the Contacts list can be sent recurring position
requests, at an adjustable time interval.

DSC call menu | Link-6 operator manual

| 27

Select buddy

Shows any existing ‘buddies’ already selected. If they have an ‘x’ next
to their name, they will be included in tracking.

Choose ADD NEW to view the full contacts list, and choose who to
add for tracking.

Once there are buddys added to the list, select one to access
options for setting tracking to ON or OFF, and for deletion from the
Buddy list.

Start tracking / Stop tracking

Selecting START TRACKING option initiates tracking of buddies in
the Track buddy list that have been set to tracking ON. The radio will
show a screen indicating which buddy is being called. If there is no
acknowledgement, the radio will retry the call after a few seconds.
Only one retry is made per tracking interval.
If tracking is already taking place, the START TRACKING text is
replaced with STOP TRACKING.

28 |

Interval

The frequency that ‘buddys’ are polled with position requests can be
adjusted, varying between 1 to 60 minutes.

Contacts

Used for the administation and calling of all individual Contacts as
well as Groups.

DSC call menu | Link-6 operator manual

View/Add Contact

Use this to store the names and associated MMSI’s of up to 50
vessels to be called regularly using DSC. Contacts are stored by
name, in alphabetical order.

Select ADD NEW to create a new contact.

Selecting an existing name in the Contacts list gives the options to
place a DSC call, make a position request, edit the contact, or delete
the contact.

View/Add Group

Use this to create, edit, or delete up to 20 vessel groups, which are
stored in alphanumeric order. Only a name and a Group Call ID
(GCID) are required to set up a group. A GCID always starts with 0;
the remaining digits can be set to whatever the user desires. All
vessels intended to be in the same group must have a suitable DSC
radio, and have the identical GCID number entered.
Selecting an existing name in the group list gives the option to edit,
delete, or call the group.

¼ Note: Adding a group to this list will in turn make the radio respond

to a group call made from any other radio with the same group
number in it’s memory.

DSC call menu | Link-6 operator manual

| 29

4

My channels

The MY CHANNELS page is accessed by a long press of the VOL/SQL
knob.
This page is provided as a shortcut to frequently accessed channels.
Channels on this list are also used in some SCAN options.
The channels available on this page are chosen using EDIT MY
CHANNELS.

¼ Note: the EDIT MY CHANNELS option is only shown on the MY

CHANNELS page when no selections have yet been made. To add
or remove channels from the list, see EDIT MY CHANNELS in “Scan
menu” on page 15.

30 |

My channels | Link-6 operator manual

5

Shortcuts

The Shortcuts page is accessed by a long press of the VOL/SQL
knob.
This page is provided as a shortcut to frequently accessed settings.
The shortcut options available on this page are subject to selections
made in ADD/EDIT SHORTCUTS.

Add/Edit shortcuts

Choose from the list of options which menu options should be
added as shourtcuts;

¼ Note: The MY VHF page is only available to the operator when en-

abled as a shortcut - it can’t be accessed via another menu.
It’s purpose is solely for displaying radio information in one easy to
access location.
It provides detail on the MMSI number, GPS data status, and Vessel
Callsign (if entered).

Once the desired shortcuts have been selected, they are accessible
directly from the Shortcuts page:

Shortcuts | Link-6 operator manual

| 31

www.bandg.com | www

.
simrad-yachting.com | www.lo

w
ranc

e
.com

6

Installation

This Lowrance DSC VHF radio is designed to generate a digital
maritime distress call to facilitate search and rescue. To be
effective as a safety device, this radio must be used only within the
geographic range of a shore-based VHF marine Channel 70 distress
and safety watch system. The geographic range may vary but under
normal conditions is approximately 20 nautical miles.

Checklist

The following items should be supplied in the box. Check before
starting the installation and contact your dealer if an item is missing.

¼ Note: An antenna is not provided. Consult your Lowrance dealer for

advice on selecting the correct antenna for your installation:

1

2

V

H

F

User Guide

RADIO

Installa

ENGLIS

ENGLISH

I

n

H

stall

tion

ENGLISH

I

n

a

Manual

stall

tion Manual

ENGLISH

a

tion Manual

bandg.

com

bandg.c

om

bandg.

com

4

5

3

6

9

7

8

10

32 |

VHF radio with hand mic

1.

2.

Bracket for gimbal mounting

3.

Gasket for recessed mounting

Documents:

4.

- user’s manual

- warranty card

- mounting template

Knobs for bracket

5.

6.

8 A (3 AG) spare fuse

Mounting screw hole covers

7.

8. Bulkhead mount for hand mic

6 pcs 3.5 x 20 mm, stainless steel, panhead

9.

4 pcs 4 x 25 mm, stainless steel, panhead

10.

Installation | Link-6 operator manual

Installation options

There are two mounting options for the radio:

• Bracket mount:

Using the supplied gimballing bracket the radio can be mounted to
either sit on top of, or hang underneath any flat horizontal surface.
The radio can be removed for storage and the viewing angle can be
adjusted.

• Flush mount:

The radio is recessed into a cavity, showing only the face of the
radio. The radio fixture is permanent and the viewing angle cannot
be adjusted.

Selecting a suitable mounting location

Whichever installation method you choose, please check the
following before doing any cutting or drilling. The chosen location
must:

• Be at least 1 m (3’) from the antenna

• Allow easy access to the rear of the radio for connection to the 12 V

DC electrical source, the antenna and any network wiring

• Be at least 45 cms (1.5’) from a compass to avoid creating magnetic

deviation of the compass.

• Have a suitable space close by for installing the microphone

bulkhead mount

• Provide easy access to the controls on the front panel

Viewing angle

The VHF radio has a large LCD screen with the optimum horizontal
and vertical viewing angles within approx. +/-20 deg. Ensure the
chosen location provides a suitable view of the display. Ideally, the
user should be directly in front of the display or no more than +/-20
deg from the front of the display.

¼ Note: If unsure, temporarily power up the radio and ensure the loca-

tion is suitable.

20°
20°

Installation | Link-6 operator manual

20°
20°

| 33

Bracket installation

The gimbal bracket provides an adjustable viewing angle with a 20º
tilt range, so ensure the selected mounting location will provide the
desired viewing and operating conditions:

Hold the bracket at the chosen location and use a soft pencil to mark the

1.

screw hole positions onto the mounting surface.

Use a 3mm (1/8” ) drill bit to drill the 4 pilot holes.

2.

Using a Philips screwdriver, secure the bracket using the supplied 4x25mm

3.

self-tapping screws to the mounting location.

Fit the radio into the bracket.

4.

5.

Insert the two mounting knobs through the holes and tighten them
sufficiently to hold the radio at the desired viewing angle.

6. Fit the mounting clips to the front of the radio to cover dash mount screw

holes.

34 |

Installation | Link-6 operator manual

Flush installation

Tape the installation template onto the chosen mounting location.

1.

Cut out the area marked by the solid dark line (the dashed line indicates the

2.

total area that will be covered by the radio fascia after installation).

Use a 2.5mm (3/32” ) drill bit to drill the 4 pilot holes.

3.

4.

Remove the installation template.

Fit the gasket to the radio.

5.

6. Slide the radio into the cavity.

7.

Using a Philips screwdriver, secure the radio using the supplied 3.5x20mm
self-tapping screws to the mounting location.

8.

Fit the mounting clips to cover the 4 mounting screws.

Install the hand mic bulkhead bracket

Hold the hand mic bulkhead bracket at the chosen location and mark the

1.

screw hole positions on the mounting surface.

¼ Note: Ensure that the microphone curly cable will comfortably reach

this location BEFORE you drill.

2.

Use a 2.5mm (3/32” ) drill bit to drill the 2 pilot holes.

3.

Using a Philips screwdriver, secure the Mic mount using the supplied

3.5x20mm self-tapping screws to the mounting location.

4.

Hang the fist mic on the mount.

Installation | Link-6 operator manual

| 35

Connect the radio wiring

All wiring on the radio should be done with the vessel power supply
turned off. While radio power is polarity protected, the fuse will
blow if connection is made wrong way round. Ensure any unused
bare wires are isolated from each other, to prevent the potential of a
short circuit.

!

Warning: never operate the radio without the antenna

connected. This may damage the transmitter.

The connectors are on the rear of the base unit, as follows:

1

2

3

4

5

6

7

8

9

10

_

+

External speaker + (gray): connect to 4 Ohm, 4 Watt (minimum) external

1.

speaker positive

2.

External speaker - (gray/black): connect to 4 Ohm, 4 Watt (minimum)
external speaker negative

3.

NMEA 0183 RX_A (yellow): connect to TX_A of chart plotter, or active GPS
antenna

NMEA 0183 RX_B (green): connect to TX_B of chart plotter, or active GPS

4.

antenna

NMEA 0183 TX_A (white): connect to RX_A of chart plotter

5.

6.

NMEA 0183 TX_B (brown): connect to RX_B of chart plotter

GND: optional ground connection. May help with induced noise issues.

7.

8. Antenna: connect to a marine VHF antenna using 50 ohm cable fitted with

a PL-259 connector

Battery + (red): connect to vessel’s 12 V DC, via a switch panel or breaker

9.

(comes with inline 8 amp fuse ready fitted)

Battery - (black): connect to vessel’s negative busbar

10.

36 |

¼ Note: external speaker and plotter connections are optional.

Installation | Link-6 operator manual

First startup conguration

The first time the radio is powered up, the user is prompted to make
a series of setting selections in order to allow the radio to perform
to its full potential. Some steps must be completed; some are
optional and can be completed later. The steps are outlined below
for reference:

Select the region and country the radio will be operated in.

Enter MMSI number if known, or skip to next step. Re-enter number
to confirm correct entry.

¼ Note: MMSI entry can only be done once. Changing the MMSI

requires radio be returned to a Lowrance dealer.

For some EU region radios only: Enter the ATIS ID number. Re-enter
number to confirm correct entry.

Enter vessel call sign if known, or skip to next step.

Installation | Link-6 operator manual

| 37

Set the time offset for your region. Choose whether to display time
in 12 or 24 hour.

MMSI and ATIS ID

The MMSI is a unique 9 digit number and the ATIS ID is a 10 digit
number. They are used on marine transceivers that have DSC (Digital
Select Calling) functionality.

• An MMSI remains with a vessel, even if the vessel is sold on.

• An MMSI has 9 numeric digits (xxxxxxxxx). Your MMSI must not

commence with a ‘0’.

• A Group MMSI begins with ‘0’ followed by 8 numeric digits

(0xxxxxxxx).

• A Coast Station MMSI begins with 00 followed by 7 numeric digits

(00xxxxxxx).

• By law, you are not able to change your MMSI once it is entered into

the radio. This is why there is the confirmation screen when entering
the MMSI.

• An ATIS ID is only required in certain EU countries when navigating

some inland waterways. It is usually a different number to your
MMSI.

• If you need to have the MMSI in the radio changed, the radio must

be taken back to your Lowrance dealer.

38 |

ATIS

Automatic Transmitter Identification System (ATIS) is required for
vessels making VHF transmissions whilst on the inland waterways of
the Regional Arrangement Concerning the Radiotelephone Service
on Inland Waterways (RAINWAT) signatory countries.

RAINWAT is an agreement to implement common principles and
rules for the safe carriage of people and goods on Inland Waterways.
The signatory countries are: Austria, Belgium, Bulgaria, Croatia, the
Czech Republic, France, Germany, Hungary, Luxembourg, Moldova,
Montenegro, the Netherlands, Poland, Romania, Serbia, the Slovak
Republic and Switzerland.

Installation | Link-6 operator manual

Where a VHF is required on the inland waterways of the signatory
countries, this must be capable of ATIS transmissions, and have the
feature activated. An ATIS number is required which is issued by
Ofcom when you add one or more pieces of ATIS equipment to
your Ship Radio Licence.

If you don’t have a user MMSI or ATIS ID, contact the appropriate
licensing authority in your country. If you’re unsure who to contact,
consult your Lowrance dealer.

Installation | Link-6 operator manual

| 39

7

Specications

GENERAL

Power supply: 12 V DC battery system

Nominal operating voltage: + 13.6 V DC

Low battery alert: 10.5 V DC +/- 0.5 V

Over voltage protection: > 15.8 V +/- 0.5 V

Current drain (Transmit): ≤ 6 A @ 25 W / 1.5 A @ 1W (12 V DC)

Current drain (Receive): Less than 450 mA in standby

Replacement Fuse: 8 A, Glass type 3 AG; 32 mm (1.25”)

Temperature range: -20 ºC to +55 ºC (-4 ºF to 131 ºF)

Usable channels: International, USA, Canada, Weather
(country specific)

Mode: 16K0G3E (FM) / 16K0G2B (DSC)

DSC mode: Class D (Global) with dual receiver
(individual CH70)

Standards - EU: EN60950-1, IEC 60529, EN 60945, EN
301 843-1 V2.1.1, EN301 843-2 V2.1.1,
EN 301 025 V2.1.1, EN 300 698 V2.1.1

Standards - US/CAN: FCC Part 80, RSS-Gen Issue 4, RSS-182
Issue 5

Standards - INT: AS/NZS 4415.1:2003

Frequency range (Transmitter): 156.025 - 157.425 MHz

Frequency range (Receiver): 156.050 - 163.275 MHz

Channel spacing: 25 KHz

Frequency stability: ± 5 ppm

Frequency control: PLL

40 |

PHYSICAL

LCD display (viewing): 42 mm x 34 mm (1.65” x 1.3”), FSTN

Contrast control: Yes

Backlight control: Yes

Antenna connector: SO-239 (50 ohm)

Waterproof: IPx7

Dimensions: W=166.7 mm (6.56”) x H=89.2 mm
(3.5”) x D=161.4 mm (6.35”) - without
bracket

Weight: 1.18 kg (2.6 lbs)

Specications | Link-6 operator manual

Compass safe distance: 0.5 m (1.5’)

NMEA 0183 port: Yes

NMEA 0183 input: RMC, GGA, GLL, GNS

NMEA 0183 output: Yes, DSC ( for DSC call), DSE (for
enhanced position)

NMEA 2000 port: No

External speaker: Yes

FEATURES

Flush mount kit Yes

Local/Distant control: Yes

Position polling: Yes

Group call: Yes

Call logs: Yes - 20 individual and 10 distress

Channel naming: Yes

Tri watch: Yes

Favourite channel scan: Yes

All scan: Yes

User programmable MMSI: Yes

MMSI and NAME directory: Yes - 20 numbers & group

TRANSMITTER

Frequency error: ≤± 1.5 KHz

Max output power:

25 W

Transmitter protection: Open / short circuit of antenna

Max Frequency deviation: ≤± 5

Spurious & harmonics Hi/Lo: ≤ 0.25 µ W

Modulation Distortion ±3KHz: ≤ 10 %

S/N at 3KHz Deviation: ≥ 40 dB

Audio Response at 1KHz: +1 to -3dB of 6 dB/octave from
300 hz to 3 KHz

DSC TX deviation at 1.3K: 2.6 ± 0.26 KHz

DSC TX deviation at 2.1K: 4.2 ± 0.42 KHz

ATIS TX deviation at 1.3 KHz: 1.3 ± 0.13 KHz

ATIS TX deviation at 2.1 KHz: 2.1 ± 0.21 KHz

Specications | Link-6 operator manual

| 41

RECEIVER

12dB SINAD sensitivity: 0.25 µV (distant) / 0.8 µV (local)

20db SINAD sensitivity: 0.35 µV

Adjacent CH selectivity: more than 70 db

Spurious response: more than 70 db

Intermodulation rejection: more than 68 db

Residual noise level: more than -40 db unsquelched

Audio output power: 2 W (with 8 ohm at 10% distortion)

4 W (with 4 ohm external speaker

¼ Note: Specifications are subject to change without notice.

42 |

Specications | Link-6 operator manual

8

Channel Charts

The following channel charts are provided for reference only and
may not be correct for all regions. It is the operators responsibility
to ensure correct channels and frequencies are used for local
regulations.

EU and INTERNATIONAL channel chart

The following is a table of transmiting frequencies in the VHF
maritime mobile band.

¼ NOTE: For assistance in understanding the Table, see Notes a) to zz)

below. (WRC-15)

¼ NOTE: The Table below defines the channel numbering for maritime

VHF communications based on 25 kHz channel spacing and use of
several duplex channels. The channel numbering and the conver­sion of two-frequency channels for single-frequency operation shall
be in accordance with Recommendation ITU-R M.1084-5 Annex
4, Tables 1 and 3. The Table below also describes the harmonized
channels where the digital technologies defined in the most recent
version of Recommendation ITU-R M.1842 could be deployed. (WRC-

15)

Channel Charts | Link-6 operator manual

| 43

Channel

designator

60 m) 156.025 160.625 x x

01 m) 156.050 160.650 x x

61 m) 156.075 160.675 x x

02 m) 156.100 160.700 x x

62 m) 156.125 160.725 x x

03 m) 156.150 160.750 x x

63 m) 156.175 160.775 x x

04 m) 156.200 160.800 x x

64 m) 156.225 160.825 x x

05 m) 156.250 160.850 x x

65 m) 156.275 160.875 x x

06 f) 156.300 x

2006 r) 160.900 160.900

66 m) 156.325 160.925 x x

07 m) 156.350 160.950 x x

67 h) 156.375 156.375 x

08 156.400 x

68 156.425 156.425 x

09 i) 156.450 156.450 x

69 156.475 156.475 x

10 h), q) 156.500 156.500 x

70 f ), j) 156.525 156.525 Digital selective calling for distress, safety and calling

11 q) 156.550 156.550 x

71 156.575 156.575 x

12 156.600 156.600 x

72 i) 156.625 x

13 k) 156.650 156.650 x

73 h), i) 156.675 156.675 x

14 156.700 156.700 x

74 156.725 156.725 x

15 g) 156.750 156.750 x

75 n), s) 156.775 156.775 x

16 f) 156.800 156.800 DISTRESS, SAFETY AND CALLING

76 n), s) 156.825 156.825 x

17 g) 156.850 156.850 x

77 156.875 x

18 m) 156.900 161.500 x x

78 m) 156.925 161.525 x x

1078 156.925 156.925 x

2078 mm) 161.525 x

19 m) 156.950 161.550 x x

Notes

44 |

Transmitting frequencies (MHz)

From ship stations From coast stations Single frequency Two frequency

Channel Charts | Link-6 operator manual

Inter- ship

Port operations and ship

movement

x

x

x

x

x

x

x

x

Public corres-

pondence

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

1019 156.950 156.950 x

2019 mm) 161.550 x

79 m) 156.975 161.575 x x

1079 156.975 156.975 x

2079 mm) 161.575 x

20 m) 157.000 161.600 x x

1020 157.000 157.000 x

2020 mm) 161.600 x

80 y), w1) 157.025 161.625 x x

21 y), w1) 157.050 161.650 x x

81 y), w1) 157.075 161.675 x x

22 y), w1) 157.100 161.700 x x

82 x), y), w1) 157.125 161.725 x x

23 x), y), w1) 157.150 161.750 x x

83 x), y), w1) 157.175 161.775 x x

24 w), ww), x), AAA) 157.200 161.800 x x

1024 w), ww), x), AAA) 157.200

2024 w), ww), x), AAA) 161.800 161.800 x (digital only)

84 w), ww), x), AAA) 157.225 161.825 x x

1084 w), ww), x), AAA) 157.225

2084 w), ww), x), AAA) 161.825 161.825 x (digital only)

25 w), ww), ), AAA) 157.250 161.850 x x

1025 w), ww), x), AAA) 157.250

2025 w), ww), x), AAA) 161.850 161.850 x (digital only)

85 w), ww), x), AAA) 157.275 161.875 x x

1085 w), ww), x), AAA) 157.275

2085 w), ww), x), AAA) 161.875 161.875 x (digital only)

26 w), ww), x) 157.300 161.900 x x

1026 w), ww), x) 157.300

2026 w), ww), x) 161.900

86 w), ww), x) 157.325 161.925 x x

1086 w), ww), x) 157.325

2086 w), ww), x) 161.925

27 z), zx) 157.350 161.950 x

1027 z), zz) 157.350 157.350 x

2027* z) 161.950 161.950

87 z), zz) 157.375 157.375 x

28 z), zx) 157.400 162.000 x

1028 z), zz) 157.400 157.400 x

2028* z) 162.000 162.000

88 z), zz) 157.425 157.425 x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

Channel Charts | Link-6 operator manual

| 45

* From 1 January 2019, channel 2027 will be designated ASM 1 and

channel 2028 will be designated ASM 2.

Editorial note: The note numbering below is provisional and will be
aligned during final preparations of the new edition of the Radio
Regulations.

Notes referring to the Table

General notes:

a) Administrations may designate frequencies in the inter-ship, port

operations and ship movement services for use by light aircraft
and helicopters to communicate with ships or participating coast
stations in predominantly maritime support operations under the
conditions specified in Nos. 51.69, 51.73, 51.74, 51.75, 51.76, 51.77
and 51.78. However, the use of the channels which are shared with
public correspondence shall be subject to prior agreement between
interested and affected administrations.

b) The channels of the present Appendix, with the exception of

channels 06, 13, 15, 16, 17, 70, 75 and 76, may also be used for
high-speed data and facsimile transmissions,subject to special
arrangement between interested and affected administrations.

c) The channels of the present Appendix, with the exception of

channels 06, 13, 15, 16, 17, 70, 75 and 76, may be used for direct­printing telegraphy and data transmission, subject to special
arrangement between interested and affected administrations.
( WR C-12 )

d) The frequencies in this table may also be used for radio

communications on inland waterways in accordance with the
conditions specified in No.5.226.

e) Administrations may apply 12.5 kHz channel interleaving on a non-

interference basis to 25 kHz channels, in accordance with the most
recent version of Recommendation ITU-R M.1084,provided:

• implementation of 12.5 kHz channel interleaving and

consequential national requirements shall be subject to
coordination with affected administrations. (WRC-12)

46 |

Channel Charts | Link-6 operator manual

Specic notes

Channels 15 and 17 may also be used for on-board communications

f)

provided the effective radiated power does not exceed 1W, and
subject to the national regulations of the administration concerned
when these channels are used in its territorial waters.

g)

Within the European Maritime Area and in Canada, these
frequencies (channels 10, 67, 73) may also be used, if so required,
by the individual administrations concerned, for communication
between ship stations, aircraft stations and participating land
stations engaged in coordinated search and rescue and anti­pollution operations in local areas, under the conditions specified in
Nos. 51.69, 51.73, 51.74, 51.75, 51.76, 51.77 and 51.78.

The preferred first three frequencies for the purpose indicated in

h)

Note a) are 156.450 MHz (channel 09), 156.625 MHz (channel 72) and

156.675 MHz (channel73).

Channel 70 is to be used exclusively for digital selective calling for

i)

distress, safety and calling.

j)

Channel 13 is designated for use on a worldwide basis as a
navigation safety communication channel, primarily for intership
navigation safety communications. It may also be used for the ship

k)

movement and port operations service subject to the national
regulations of the administrations concerned.

l)

These channels may be operated as single frequency channels,
subject to coordination with affected administrations. The following
conditions apply for single frequency usage:

• The lower frequency portion of these channels may be operated

as single frequency channels by ship and coast stations.

• Transmission using the upper frequency portion of these channels

is limited to coast stations.

• If permitted by administrations and specified by national

regulations, the upper frequency portion of these channels may
be used by ship stations for transmission. All precautions should

Channel Charts | Link-6 operator manual

| 47

be taken to avoid harmful interference

* From 1 January 2019, channel 2027 will be designated ASM 1
and channel 2028 will be designated ASM 2.

w. In Regions 1 and 3:

Until 1 January 2017, the frequency bands 157.200-157.325 MHz
and 161.800-161.925 MHz (corresponding to channels: 24, 84, 25, 85,
26 and 86) may be used for digitally modulated emissions, subject
to coordination with affected administrations. Stations using these
channels or frequency bands for digitally modulated emissions shall
not cause harmful interference to, or claim protection from, other
stations operating in accordance with Article 5.

From 1 January 2017, the frequency bands 157.200-157.325 MHz
and 161.800-161.925 MHz (corresponding to channels: 24, 84, 25,
85, 26 and 86) are identified for the utilization of the VHF Data
Exchange System (VDES) described in the most recent version of
Recommendation ITU-R M.2092. These frequency bands may also
be used for analogue modulation described in the most recent
version of Recommendation ITU-R M.1084 by an administration
that wishes to do so, subject to not causing harmful interference
to, or claiming protection from other stations in the maritime
mobile service using digitally modulated emissions and subject to
coordination with affectedadministrations. (WRC-15)

48 |

Channel Charts | Link-6 operator manual

ww. In Region 2, the frequency bands 157.200-157.325 and 161.800-

161.925 MHz (corresponding to channels: 24, 84, 25, 85, 26
and 86) are designated for digitally modulated emissions in
accordance with the most recent version of Recommendation
ITU-R M.1842.

In Canada and Barbados, from 1 January 2019 the frequency
bands 157.200-157.275 and 161.800-161.875 MHz (corresponding
to channels: 24, 84, 25 and 85) may be used for digitally
modulated emissions, such as those described in the most
recent version of Recommendation ITU-R M.2092, subject to
coordination with affected administrations. (WRC-15)

x) From 1 January 2017, in Angola, Botswana, Lesotho, Madagascar,

Malawi, Mauritius, Mozambique, Namibia, Democratic Republic of
the Congo, Seychelles, South Africa, Swaziland, Tanzania, Zambia
and Zimbabwe, the frequency bands 157.125-157.325 and 161.725-

161.925 MHz (corresponding to channels: 82, 23, 83, 24, 84, 25, 85, 26
and 86) are designated for digitally modulated emissions.

From 1 January 2017, in China, the frequency bands 157.150 -

157.325 and 161.750 - 161.925 MHz (corresponding to channels: 23,
83, 24, 84, 25, 85, 26 and 86) are designated for digitally modulated
emissions. (WRC-12)

y) These channels may be operated as single or duplex frequency

channels, subject to coordination with affected administrations.
( WR C-12 )

AAA) From 1 January 2019, the channels 24, 84, 25 and 85 may be merged

in order to form a unique duplex channel with a bandwidth of 100
kHz in order to operate the VDES terrestrial component described in
the most recent version of Recommendation ITU-RM.2092. (WRC-

15)

mm) Transmission on these channels is limited to coast stations. If

permitted by administrations and specified by national regulations,
these channels may be used by ship stations for transmission.

Channel Charts | Link-6 operator manual

| 49

* From 1 January 2019, channel 2027 will be designated ASM 1 and
channel 2028 will be designated ASM 2.

w1) In Regions 1 and 3:

Until 1 January 2017, the frequency bands 157.025-157.175 MHz and

161.625-161.775 MHz (corresponding to channels: 80, 21, 81, 22, 82,
23 and 83) may be used for digitally modulated emissions, subject
to coordination with affected administrations. Stations using these
channels or frequency bands for digitally modulated emissions shall
not cause harmful interference to, or claim protection from, other
stations operating in accordance with Article 5.

From 1 January 2017, the frequency bands 157.025-157.100 MHz
and 161.625-161.700 MHz (corresponding to channels: 80, 21, 81
and 22) are identified for utilization of the digital systems described
in the most recent version of Recommendation ITU-R M.1842 using
multiple 25 kHz contiguous channels.

From 1 January 2017, the frequency bands 157.150-157.175 MHz
and 161.750-161.775 MHz (corresponding to channels: 23 and 83)
are identified for utilization of the digital systems described in the
most recent version of Recommendation ITU-R M.1842 using two
25 kHz contiguous channels. From 1 January 2017, the frequencies

157.125 MHz and 161.725 MHz (corresponding to channel: 82) are
identified for the utilization of the digital systems described in the
most recent version of Recommendation ITU-R M.1842.

The frequency bands 157.025-157.175 MHz and 161.625-161.775
MHz (corresponding to channels: 80, 21, 81, 22, 82, 23 and 83) can
also be used for analogue modulation described in the most recent
version of Recommendation ITU-R M.1084 by an administration
that wishes to do so, subject to not claiming protection from other
stations in the maritime mobile service using digitally modulated
emissions and subject to coordination with affected administrations.
(WRC-15)

zx) In the United States, these channels are used for communication

between ship stations and coast stations for the purpose of public
correspondence. (WRC-15)

zz) From 1 January 2019, channels 1027, 1028, 87 and 88 are used as

single-frequency analogue channels for port operation and ship
movement. (WRC-15)

Source: ITU Radio Regulations (2016); reproduced with permission from ITU

50 |

Channel Charts | Link-6 operator manual

USA channel chart

CH #:Ship Transmit

MHz

1001 156.050 156.050 S Port Operations and Commercial, VTS. Available only in New Orleans / Lower Mississippi area.

1063 156.175 156.175 S Port Operations and Commercial, VTS. Available only in New Orleans / Lower Mississippi area.

1005 156.250 156.250 S Port Operations or VTS in the Houston, New Orleans and Seattle areas.

1065 156.275 156.275 S Port Operations

6 156.300 156.300 S I ntership Safety

1066 156.325 156.325 S Port Operations

1007 156.350 156.350 S Commercial. VDSMS

67 156.375 156.375 S Commercial. Used for Bridge-to-bridge communications in lower Mississippi River. Intership only.

8 156.400 156.400 S Commercial (Intership only). VDSMS

68 156.425 156.425 S Non-Commercial. VDSMS

9 156.450 156.450 S Boater Calling. Commercial and Non-Commercial. VDSMS

69 156.475 156.475 S Non-Commercial. VDSMS

10 156.500 156.500 S Commercial. VDSMS

70 156.525 156.525 S Digital Selective Calling (voice communications not allowed)

11 156.550 156.550 S Commercial. VTS in selected areas. VDSMS

71 156.575 156.575 S Non-Commercial. VDSMS

12 156.600 156.600 S Port Operations. VTS in selected areas.

72 156.625 156.625 S Non-Commercial (Intership only). VDSMS

13 156.650 156.650 S

73 156.675 156.675 S Port Operations

14 156.700 156.700 S Port Operations. VTS in selected areas.

74 156.725 156.725 S Port Operations

16 156.800 156.800 S

17 156.850 156.850 S State & local govt maritime control

77 156.875 156.875 S Port Operations (Intership only)

1018 156.900 156.900 S Commercial. VDSMS

1078 156.925 156.925 S Non-Commercial. VDSMS

1019 156.950 156.950 S Commercial. VDSMS

1079 156.975 156.975 S Commercial. Non-Commercial in Great Lakes only. VDSMS

20 157.000 161.600 D Port Operations (duplex)

1020 157.000 157.000 S Port Operations

1080 157.025 157.025 S Commercial. Non-Commercial in Great Lakes only. VDSMS

1021 157.050 157.050 S U.S. Coast Guard only

1081 157.075 157.075 S U.S. Government only - Environmental protection operations.

1022 157.100 157.100 S

1082 157.125 157.125 S U.S. Government only

1023 157.150 157.150 S U.S. Coast Guard only

1083 157.175 157.175 S U.S. Coast Guard only

24 157.200 161.800 D Public Correspondence (Marine Operator). VDSMS

84 157.225 161.825 D Public Correspondence (Marine Operator). VDSMS

25 157.250 161.850 D Public Correspondence (Marine Operator). VDSMS

85 157.275 161.875 D Public Correspondence (Marine Operator). VDSMS

26 157.300 161.900 D Public Correspondence (Marine Operator). VDSMS

86 157.325 161.925 D Public Correspondence (Marine Operator). VDSMS

27 157.350 161.950 D Public Correspondence (Marine Operator). VDSMS

87 157.375 157.375 S Public Correspondence (Marine Operator). VDSMS

Ship Receive
MHz

S/D/R Use / Notes / Description:

Intership Navigation Safety (Bridge-to-bridge). Ships >20m length maintain a listening watch on this
channel in US waters.

International Distress, Safety and Calling. Ships required to carry radio, USCG, and most coast stations
maintain a listening watch on this channel.

Coast Guard Liaison and Maritime Safety Information Broadcasts. Broadcasts announced on channel

16.

Channel Charts | Link-6 operator manual

| 51

28 157.400 162.000 D Public Correspondence (Marine Operator). VDSMS

88 157.425 157.425 S Commercial, Intership only. VDSMS

15 -- 156.750 R Environmental (Receive only). Used by Class C EPIRBs.

52 |

Channel Charts | Link-6 operator manual

CANADA Channel Chart

Channel # MHz (ship) MHz

1 156.050 160.650 D

2 156.100 160.700 D Public Correspondence.

3 156.150 160.750 D

4 156.200 160.800 D DFO/CCG liaison. Commercial fishing.

5 156.250 160.850 D

6 156.300 156.300 S SAR/Safety Communications between ships and aircraft. I ntership.

7 156.350 160.950 D

8 156.400 156.400 S

9 156.450 156.450 S V TS. Intership.

10 156.500 156.500 S VTS. Intership.

11 156.550 156.550 S VTS. Pilotage.

12 156.600 156.600 S VTS. Port Operations. Pilotage.

13 156.650 156.650 S VTS. Bridge to Bridge navigational traffic.

14 156.700 156.700 S VTS. Port Operations. Pilotage.

15 156.750 156.750 S

16 156.800 156.800 S International Distress and Safety (RT ).

17 156.850 156.850 S

18 156.900 161.500 D

19 156.950 161.550 D CCG MSI Broadcasts.

20 157.000 161.600 D

21 157.050 161.650 D CCG CMB.

22 157.100 161.700 D

23 157.150 161.750 D Public Correspondence.

24 157.200 161.800 D Public Correspondence.

25 157.250 161.850 D CCG MSI Broadcast. Public Correspondence.

26 157.300 161.900 D CCG MSI Broadcast. Public Correspondence.

27 157.350 161.950 D Public Correspondence.

28 157.400 162.000 D

60 156.025 160.625 D

61 156.075 160.675 D DFO/CCG liaison. Commercial fishing.

62 156.125 160.725 D DFO/CCG liaison. Commercial fishing.

63 156.175 160.775 D

64 156.225 160.825 D

65 156.275 160.875 D

66 156.325 160.925 D

67 156.375 156.375 S

68 156.425 156.425 S

69 156.475 156.475 S

70 156.525 156.525 S International Distress and Safety (DSC).

71 156.575 156.575 S VTS

72 156.625 S

73 156.675 156.675 S

74 156.725 156.725 S VTS

75 156.775 156.775 S

76 156.825 156.825 S

77 156.875 156.875 S

78 156.925 161.525 D

79 156.975 161.575 D

80 157.025 161.625 D

(coast)

S/D/R Remarks

Channel Charts | Link-6 operator manual

| 53

81 157.075 161.675 D

82 157.125 161.725 D DFO/CCG liaison.

83 157.175 161.775 D CCG MSI Broadcast.

84 157.225 161.825 D Public Correspondence.

85 157.275 161.875 D Public Correspondence.

86 157.325 161.925 D

87 157.375 157.375 S Port operations. Ship movement.

88 157.425 157.425 S Port Operations. Ship movement.

1001 156.050 156.050 S

1005 156.250 156.250 S VTS

1007 156.350 156.350 S

1018 156.900 156.900 S

1019 156.950 S DFO/CCG liaison.

1020 157.000 157.000 S

1021 157.050 S DFO/CCG liaison.

1022 157.100 S DFO/CCG liaison.

1023 161.750 R CCG CMB.

1024 157.200 S

1025 157.250 S

1026 157.300 S

1027 157.350 157.350 S CCG CMB.

1028 157.350 S CCG MSI Broadcast.

1063 156.175 156.175 S

1065 156.275 156.275 S

1066 156.325 156.325 S

1078 156.925 156.925 S Intership for fishing vessels.

1079 156.975 156.975 S

1080 157.025 157.025 S

1083 157.175 S DFO/CCG liaison.

1084 157.225 S

1085 157.275 S CCG CMB.

1086 157.325 S

2019 161.550 R

2020 161.600 R

2024 161.800 161.800 S VDES

2025 161.850 161.850 S VDES

2026 161.900 R

2027 161.950 161.950 S ASM-1 (effective 01/2019).

2028 162.000 162.000 S ASM-2 (effective 01/2019).

2078 161.525 R

2079 161.575 R

2084 161.825 161.825 S VDES

2085 161.875 R VDES

2086 161.925 R

54 |

Channel Charts | Link-6 operator manual

USA & Canada WEATHER Channels

Channel Frequency (MHz) Country Note

WX1 162.550 USA and CANADA Rx only

WX2 162.400 USA and CANADA Rx only

WX3 162.475 USA and CANADA Rx only

WX4 162.425 USA Rx only

WX5 162.450 USA Rx only

WX6 162.500 USA Rx only

WX7 162.525 USA Rx only

Channel Charts | Link-6 operator manual

| 55

*988-11181-001*