Standard Horizon Matrix GX2000 User manual

Page 1GX2000/GX2100
MATRIX SERIES
GX2000 and GX2100
25 Watt VHF/FM
Marine Transceivers
Owner's Manual
zIntegrated dual channel AIS (Automatic Identification System) receiver (GX2100)
zAIS (Automatic Identification System) receiver or transponder connection (GX2000)
zAIS target display: MMSI. Call Sign, Ship Name, BRG, DST, SOG, and COGÚ
zContact AIS Ship with DSC*
z38400 AIS VDM sentence output to compatible GPS Chart Plotter (GX2100)
z80 dB Commercial grade receiver
zClass D DSC (Digital Selective Calling) with Individual, All Ship, Position Report, Posi-
tion Request, and Distress.
zAutomatically poll up to 4 ships
zIndependent Channel 70 receiver built-in for continuous DSC watch
zLocal/Distance attenuator
zEnter, Save, and Navigation to waypoint with Compass pageÚ
zNavigation to a DSC Distress CallÚ
zSubmersible JIS-7 / IPX7 (3.3 feet for 30 minutes)
zClearVoice noise canceling speaker microphone with channel selection and 16/9 key
zOversized rotary channel knob with push to enter, backlit display and keys
z30 Watt PA/Loud Hailer with pre-programmed fog signals and (listen back GX2100)
zCapable of connecting an optional RAM3 second station remote microphone
zIntercom between radio and RAM3
zDSC position request and report function when connected to compatible GPS chart
plotter
zVoice Scrambler (optional)
zOne button access to Channel 16 and 9
zUser programmable soft keys
zNavigation (LAT/LON, SOG, and COG) information shown on displayÚ
zE2O (Easy-To-Operate) menu system
ÚWhen connected to an optional GPS (GX2100)
When connected to an optional GPS and AIS receiver or transponder (GX2000)
MATRIX AIS GX2100 MATRIX GX2000

GX2000/GX2100Page 2
TABLE OF CONTENTS
Quick Reference Guide .............................................................................................................................. 4, 5
1 GENERAL INFORMATION ....................................................................................................................... 8
2 PACKING LIST .......................................................................................................................................... 9
3 OPTIONS ................................................................................................................................................... 9
4 SAFETY/WARNING INFORMATION ...................................................................................................... 10
5 FCC RADIO LICENSE INFORMATION ................................................................................................... 11
6 FCC NOTICE ........................................................................................................................................... 12
7 GETTING STARTED ............................................................................................................................... 13
7.1 ABOUT VHF RADIO ................................................................................................................. 13
7.2 SELECTING AN ANTENNA ..................................................................................................... 13
7.3 COAXIAL CABLE ...................................................................................................................... 14
7.4 EMERGENCY (CHANNEL 16 USE) ........................................................................................... 15
7.5 CALLING ANOTHER VESSEL (CHANNEL 16 OR 9) .............................................................. 16
7.5 MAKING TELEPHONE CALLS ................................................................................................ 17
7.7 OPERATING ON CHANNELS 13 AND 67 ............................................................................ 17
8 INSTALLATION ....................................................................................................................................... 18
8.1 LOCATION ................................................................................................................................. 18
8.2 MOUNTING THE RADIO ............................................................................................................ 18
8.3 ELECTRICAL CONNECTIONS ................................................................................................. 20
8.4 ACCESSORY CABLE ............................................................................................................... 21
8.5 CHECKING GPS CONNECTIONS .......................................................................................... 23
8.6 CHANGING THE GPS TIME ................................................................................................... 24
8.7 CHANGING THE TIME LOCATION ........................................................................................ 24
8.8 CHANGING THE TIME FORMAT ............................................................................................ 24
8.9 CHANGING COG TO TRUE OR MAGNETIC ....................................................................... 25
8.10 OPTIONAL CMP30 (RAM3) INSTALLATION ............................................................................. 26
9 CONTROLS AND INDICATORS ............................................................................................................. 28
9.1 CONTROLS AND CONNECTIONS .......................................................................................... 28
10 BASIC OPERATION ................................................................................................................................ 33
10.1 PROHIBITED COMMUNICATIONS .......................................................................................... 33
10.2 RECEPTION ............................................................................................................................... 33
10.3 TRANSMISSION ........................................................................................................................ 33
10.4 TRANSMIT TIME-OUT TIMER (TOT) ...................................................................................... 34
10.5 SIMPLEX/DUPLEX CHANNEL USE ........................................................................................ 34
10.6 DISPLAY TYPE ......................................................................................................................... 34
10.7 USA, CANADA, AND INTERNATIONAL MODE ...................................................................... 35
10.8 NOAA WEATHER CHANNELS ................................................................................................ 35
10.9 DUAL WATCH (TO CH16) ......................................................................................................... 36
10.10 SCANNING ................................................................................................................................. 37
10.11 PRESET CHANNELS (0 ~ 9): INSTANT ACCESS ................................................................ 39
10.12 PA/FOG Operation .................................................................................................................... 40
10.13 INTERCOM OPERATION ......................................................................................................... 43
10.14 VOICE SCRAMBLER ................................................................................................................ 44
11 DIGITAL SELECTIVE CALLING ............................................................................................................. 46
11.1 GENERAL .................................................................................................................................. 46
11.2 MARITIME MOBILE SERVICE IDENTITY (MMSI) ................................................................. 46
11.2.1 What is an MMSI? ................................................................................................... 46
11.2.2 Programming the MMSI ............................................................................................ 47
11.3 DSC DISTRESS CALL ............................................................................................................. 48
11.3.1 Transmitting a DSC Distress Call ........................................................................... 48
11.3.2 Receiving a DSC Distress Call ............................................................................... 51
11.4 ALL SHIPS CALL ..................................................................................................................... 52
11.4.1 Transmitting an All Ships Call ................................................................................. 52
11.4.2 Receiving an All Ships Call ..................................................................................... 53
11.5 INDIVIDUAL CALL .................................................................................................................... 54
11.5.1 Setting up the Individual / Position Call Directory ................................................. 54
11.5.2 Setting up Individual Reply ...................................................................................... 55
11.5.3 Setting up Individual / Group Call Ringer ............................................................... 55
11.5.4 Transmitting an Individual Call ................................................................................ 56
11.5.5 Receiving an Individual Call .................................................................................... 58
11.6 CALL WAITING DIRECTORY .................................................................................................. 59
11.6.1 Enabling the Call Waiting Feature .......................................................................... 59
11.6.2 Reviewing Received Calls Logged into the Call Waiting Directory ..................... 59
11.6.3 Deleting a call from the "DSC LOG" directory ............................................................ 60
11.7 GROUP CALL ........................................................................................................................... 61
11.7.1 Setup a Group Call .................................................................................................. 61

Page 3GX2000/GX2100
11.7.2 Transmitting a Group Call ........................................................................................ 63
11.7.3 Receiving a Group Call ............................................................................................ 64
11.8 POSITION REQUEST ............................................................................................................... 65
11.8.1 Setting up Position Reply ........................................................................................ 65
11.8.2 Transmitting a Position Request to Another Vessel ............................................. 66
11.8.3 Receiving a Position Request ................................................................................. 67
11.9 POSITION REPORT ................................................................................................................. 68
11.9.1 Transmitting a DSC Position Report Ringer .......................................................... 68
11.9.2 Transmitting a DSC Position Report Call .............................................................. 68
11.9.3 Receiving a DSC Position Report Call .................................................................. 70
11.10 MANUAL INPUTTING OF A GPS LOCATION (LAT/LON) ................................................... 71
11.11 AUTO DSC POLLING ................................................................................................................ 72
11.11.1 Selecting Stations to be Automatically Polled (tracked) ....................................... 72
11.12.2 Enable/Disable Auto DSC Polling ............................................................................ 73
12 RADIO SETUP MODE ............................................................................................................................ 74
12.1 DISPLAY ..................................................................................................................................... 74
12.2 LOCAL DISTANCE ATTENUATOR .......................................................................................... 75
12.3 LAMP ADJUSTING .................................................................................................................... 75
12.4 Display CONTRAST .................................................................................................................. 76
12.5 TIME OFFSET ........................................................................................................................... 77
12.6 TIME AREA ............................................................................................................................... 78
12.7 TIME DISPLAY .......................................................................................................................... 78
12.8 UNIT OF MEASURE ................................................................................................................ 79
12.9 MAGNETIC ................................................................................................................................. 80
12.10 KEY BEEP ................................................................................................................................. 80
12.11 FOG ALERT TONE FREQUENCY ............................................................................................ 81
12.12 SOFT KEY ................................................................................................................................. 82
12.13 CH GROUP ................................................................................................................................ 83
12.14 SCAN MEMORY ........................................................................................................................ 83
12.15 SCAN TYPE .............................................................................................................................. 84
12.16 SCAN RESUME ......................................................................................................................... 84
12.17 PRIORITY CHANNEL ............................................................................................................... 85
12.18 WEATHER ALERT .................................................................................................................... 85
12.19 CHANNEL NAME ...................................................................................................................... 86
12.20 STATION NAME ........................................................................................................................ 87
12.21 SCRAMBLER ............................................................................................................................. 88
13 AIS / COMPASS SETUP ......................................................................................................................... 89
13.1 AUTOMATIC IDENTIFICATION SYSTEM (AIS) ..................................................................... 89
13.2 DIRECTION ................................................................................................................................ 90
13.3 ACTIVATION RANGE ................................................................................................................ 90
13.3 CPA ALARM .............................................................................................................................. 91
13.4 TCPA ALARM ............................................................................................................................ 91
13.5 DISPLAY RANGE ...................................................................................................................... 92
14 WAYPOINTS ............................................................................................................................................ 93
14.1 STORING WAYPOINTS ............................................................................................................ 93
14.2 EDITING A WAYPOINT ............................................................................................................ 94
14.3 DELETENG A WAYPOINT .......................................................................................................94
14.4 SAVING A DSC POSITION CALL AS A WAYPOINT ............................................................ 95
14.5 NAVIGATING TO A SAVED WAYPOINT ................................................................................ 95
14.6 STOP NAVIGATING TO A WAYPOINT .................................................................................. 96
15 AIS OPERATION .................................................................................................................................... 97
15.1 AIS RANGE ............................................................................................................................... 98
16 ENHANCED RAM+ MIC OPERATION ...................................................................................................99
16.1 RAM+ MIC CONTROLS ........................................................................................................... 99
17 MAINTENANCE .................................................................................................................................... 102
17.1 REPLACEMENT PARTS ......................................................................................................... 102
17.2 FACTORY SERVICE ............................................................................................................... 102
17.3 TROUBLESHOOTING CHART ............................................................................................... 103
18 CHANNEL ASSIGNMENTS .................................................................................................................. 104
19 WARRANTY ........................................................................................................................................... 110
20 RESET PROCEDURES ......................................................................................................................... 113
21 SPECIFICATIONS .................................................................................................................................. 114
TABLE OF CONTENTS

GX2000/GX2100Page 4
QUICK REFERENCE GUIDE
h
[PTT]S
WITCH
Place your mouth
about 1/2 inch away
from Mic hole and
speak in a norma
voice level while
pressing this
switch.
d
[TT
TT
T]/ [SS
SS
S]K EY
Selects the operating
channel.
f
[H/L]B
UTTON
When pressed,
toggles the transmit
power between High
(25W) and Low (1W).
e
[SQL]K
NOB
Move this control
clockwise to squelch
or counter clockwise
un-squelch the radio.
c
[PWR/VOL]K
NOB
Press and hold this knob until the LCD
turns on, and adjust the audio level.
d
[CH]K
NOB
Selects the operating channel.
g
[16/9]B
UTTON
yPress to recall chan-
nel 16.
yPress and hold to
recall channel 9.
g
[16/9]B
UTTON
yPress to recall
channel 16.
yPress and hold to
recall channel 9.
M ICROPHONE

Page 5GX2000/GX2100
[DISTRESS]B
UTTON
Note: for this key to
operate a MMSI must
be programmed.
To transmit a DSC Dis-
tress call, lift the red
cover, press the Dis-
tress button once,
then press and hold
until the radio alarms.
QUICK REFERENCE GUIDE
[CALL/MENU]B
UTTON
yPress to access the
“DSC MENU”, refer
to section “11 DIGI-
TAL SELECTIVE
CALLING”.
yPress and hold to
access the “SETUP
MENU”, refer to
section “12 RADIO
SETUP MODE”.
[CH]K
NOB
ySelect a Marin VHF
or NOAA Wather
channel.
ySelect the item in
the “SETUP MENU”
and “DSC MENU”.
yWhen the “SETUP
MENU” or “DSC
MENU” is selected,
pressing this knob
saves a selection.
[CLR/WX]B
UTTON
yPress to cancel a
menu selection.
yPress and hold to
recall the last-used
NOAA Weather
Channel.
[S
OFT
]K
EY
The 3 soft keys under-
neath the display can
be customized, refer
to section “12.12
SOFT KEY”.
The factory defaults
are Key 1: [PA/FOG],
2: [IC], and 3: [SCAN]
key.
[AIS]B
UTTON
Press to change the
display to AIS (Auto-
matic Identification
System) mode.
To setup AIS features,
refer to section “13
AIS / COMPASS
SETUP”.

GX2000/GX2100Page 6
ELECTRICAL CONNECTIONS
MATRIX GX2000
MATRIX AIS GX2100
GPS Chart Plotter
Plotter ConnectionRadio Wires
PA Speaker
External Speaker
Green
Gray
Red Black
NMEA OUT
NMEA COMMON
NMEA IN
NMEA-HS IN
( )
( )
( )
( )
Blue
Brown
Shield
Shield
Red
White
12 V Battery
GPS Chart Plotter
Plotter ConnectionRadio Wires
PA Sp e ak er
External Speaker
Green
Gray
Red Black
NMEA OUT
NMEA COMMON
NMEA COMMON
NMEA IN
NMEA-HS OUT
( )
( )
( )
( )
( )
Blue
Brown
Shield
Shield
Red
White
12 V Battery
AIS Receiver

Page 7GX2000/GX2100
DESKTOP MOUNTING OVERHEAD MOUNTING
DESKTOP/OVERHEAD MOUNTING THE RADIO
The supplied universal mounting bracket allows desktop or overhead mounting.
Use a 13/64” (5.2-mm) bit to drill the holes to a surface which is more 0.4 inch
(10 mm) thick and can support more than 3.3 lbs (1.5 kg) and secure the
bracket with the supplied screws, spring washers, flat washers, and nuts.
FLUSH MOUNTING THE RADIO
The optional MMB-84 Flush-Mount Bracket allows flush mounting the radio to
your vessel.
1. Use the supplied template to mark the location where the rectangular hole
is to be cut. Confirm the space behind the dash or panel is deep enough to
accommodate the transceiver (at least 6.7 inches or 17 cm deep).
There should be at least 1/2
inch (1.3 cm) between the
transceiver’s heatsink and any
wiring, cables or structures.
2. Cut out the rectangular hole
and insert the transceiver.
3. Fasten the optional MMB-84
brackets to the sides of the
transceiver with the lock
washer nut combination; so that the mounting screw base faces the mount-
ing surface.
4. Turn the adjusting screw to adjust the tension so that the transceiver is
tight against the mounting surface.
Bracket
Adjusting Screw
Lock-washer nut combination

GX2000/GX2100Page 8
1 GENERAL INFORMATION
1.1 INTRODUCTION
The STANDARD HORIZON MATRIX Series GX2000 and GX2100 Marine VHF/
FM Marine transceiver are designed to be used in USA, International and Ca-
nadian Marine bands. The GX2000 and GX2100 can be operated from 11 to
16 VDC and has a switchable RF output power of 1 watt or 25 watts.
MATRIX AIS GX2100
Integrates a dual channel AIS (Automatic Identification System) receiver to
display AIS vessel information (MMSI, Call Sign, Ship Name, BRG, DST, SOG
and COG) directly on the VHF radio, so you will know what is out there in any
conditions. The GX2100 is also capable of entering and saving up to 100
waypoints, which may be selected and navigated to by using a unique naviga-
tion compass display. The MATRIX AIS allows you to contact an AIS Ship
directly using DSC, show your vessels position in relation to AIS targets and
alert you when an AIS ship may be approaching too close to your location via
the Closest Point of Approach (CPA) Alarm. To receive AIS targets from ships
with AIS class A or B transponders. Simply connect the normal VHF antenna
(only one antenna needed!)
MATRIX - GX2000
For the mariner who already has AIS on-board and desires a VHF with the
features of the MATRIX AIS, the MATRIX GX2000 has a connection for an AIS
receiver or transponder.
The MATRIX Series VHF’s are capable of DSC (Digital Selective Calling) Class
D operation. Class D operation allows continuous receiving of Digital Selective
Calling functions on channel 70 even if the radio is receiving a call. The MA-
TRIX Series VHF's operate on all currently-allocated marine channels which
are switchable for use with USA, International, or Canadian regulations. Emer-
gency channel 16 can be immediately selected from any channel by pressing
the red [16/9]key. NOAA Weather channels can also be accessed immedi-
ately by pressing and holding the [CLR(WX)] key.
Other features of the MATRIX Series VHF’s include: Speaker Microphone,
30W PA/Fog, optional RAM3 second station remote-control microphone with
display, multi-station intercom with RAM3, scanning, priority scanning, sub-
mersible speaker mic, high and low voltage warning, and GPS repeatability.

Page 9GX2000/GX2100
2 PACKING LIST
When the package containing the transceiver is first opened, please check it
for the following contents:
yGX2000 or GX2100 Transceiver
yMounting Bracket and hardware
yOwner’s Manual
yWarning Sticker
yFlush Mount Template
yPower Cord
3 OPTIONS
MMB-84 .........................................................................Flush-Mount Bracket
CMP30B/W ............... Remote-Access Microphone (RAM+ Mic, Black/White)
CT-100 ............................................... 23-foot Extension Cable for RAM3 Mic
CVS2500 ...............................................................................Voice Scrambler
MLS-310 ............ 10W amplified External Speaker with on/off Volume control
MLS-300 .................................................................... External Loud Speaker
220SW ..................................................................... 4.5” Round Hail/PA Horn
240SW ........................................................ 5” x 8” Rectangular Hail/PA Horn

GX2000/GX2100Page 10
4 SAFETY / WARNING INFORMATION
This radio is restricted to occupational use, work related operations only where
the radio operator must have the knowledge to control the exposure condi-
tions of its passengers and bystanders by maintaining the minimum separa-
tion distance of 0.89 m (2.92 feet). Failure to observe these restrictions will
result in exceeding the FCC RF exposure limits.
Antenna Installation:
The antenna must be located at least 0.89 m (2.92 feet) away from passen-
gers in order to comply with the FCC RF exposure requirements.
ON-LINE WARRANTY REGISTRATION (in USA or Canada only)
Please visit www.standardhorizon.com to register the GX2000/GX2100
Marine VHF. It should be noted that visiting the Web site from time to
time may be beneficial to you, as new products are released they will
appear on the STANDARD HORIZON Web site.
PRODUCT SUPPORT INQUIRIES
If you have any questions or comments regarding the use of the GX2000/
GX2100, you can visit the STANDARD HORIZON Web site to send an
E-Mail or contact the Product Support team at [phone] M-F 7:00-
5:00PST.

Page 11GX2000/GX2100
5 FCC RADIO LICENSE INFORMATION
Standard Horizon radios comply with the Federal Communication Commis-
sion (FCC) requirements that regulate the Maritime Radio Service.
5.1 STATION LICENSE
An FCC ship station license is no longer required for any vessel traveling in
U.S. waters (except Hawaii) which is under 20 meters in length. However, any
vessel required to carry a marine radio on an international voyage, carrying a
HF single side band radiotelephone or marine satellite terminal is required to
have a ship station license. FCC license forms, including applications for ship
(605) and land station licenses can be downloaded via the Internet at http://
www.fcc.gov/Forms/Form605/605.html. To obtain a form from the FCC, call
[phone].
5.2 RADIO CALL SIGN
Currently the FCC does not require recreational boaters to have a Ship Radio
Station License. The USCG recommends the boats registration number and
the state to be used when calling another vessel.
5.3 CANADIAN SHIP STATION LICENSING
You may need a license when traveling in Canada. If you do need a license
contact their nearest field office or regional office or write:
Industry Canada
Radio Regulatory Branch
Attn: DOSP
300 Slater Street
Ottawa, Ontario
Canada, KIA 0C8
5.4 FCC / INDUSTRY CANADA INFORMATION
The following data pertaining to the transceiver is necessary to fill out the li-
cense application.
Type Acceptance ......................................................................... FCC Part 80
Output Power ...............................................1 Watt (low) and 25 Watts (high)
Emission ......................................................................... 16K0G3E, 16K0G2B
Frequency Range .................................................... 156.025 to 163.275 MHz
FCC Type Number .................................................................. K6630443X3D
Industry Canada Type Approval ............................................511B-30443X3S

GX2000/GX2100Page 12
6 FCC NOTICE
NOTICE
Unauthorized changes or modifications to this equipment may void com-
pliance with FCC Rules. Any change or modification must be approved
in writing by STANDARD HORIZON.
NOTICE
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 residential 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 ra-
dio 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 de-
termined 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 to
which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.

Page 13GX2000/GX2100
7 GETTING STARTED
7.1 ABOUT VHF RADIO
The radio frequencies used in the VHF marine band lie between 156 and 158
MHz with some shore stations available between 161 and 163 MHz. The ma-
rine VHF band provides communications over distances that are essentially
“line of sight” (VHF signals do not travel well through objects such as buildings,
hills or trees). Actual transmission range depends much more on antenna type,
gain and height than on the power output of the transmitter. On a fixed mount
25W radio transmission expected distances can be greater than 15 miles, for
a portable 5W radio transmission the expected distance can be greater than 5
miles in “line of sight”.
7.2 SELECTING AN ANTENNA
Marine antennas are made to radiate signals equally in all horizontal direc-
tions, but not straight up. The objective of a marine antenna is to enhance the
signal toward the horizon. The degree to which this is accomplished is called
the antenna’s gain. It is measured in decibels (dB) and is one of the major
factors in choosing an antenna. In terms of effective radiated power (ERP),
antennas are rated on the basis of how much gain they have over a theoretical
antenna with zero gain. A 3 foot, 3dB gain antenna represents twice as much
gain over the imaginary antenna.
Typically a 3 foot 3dB gain stainless steel whip is used on a sailboat mast. The
longer 8 foot 6dB fiberglass whip is primarily used on power boats that require
the additional gain.

GX2000/GX2100Page 14
7.3 COAXIAL CABLE
VHF antennas are connected to the transceiver by means of a coaxial cable –
a shielded transmission line. Coaxial cable is specified by it’s diameter and
construction.
For runs less than 20 feet, RG-58/U, about 1/4 inch in diameter is a good
choice. For runs over 20 feet but less than 50 feet, the larger RG-8X or RG-
213/U should be used for cable runs over 50 feet RG-8X should be used. For
installation of the connector onto the coaxial cable refer to the figure below.
To get your coax cable through a fitting and into your boat’s interior, you
may have to cut off the end plug and reattach it later. You can do this if
you follow the directions that come with the connector. Be sure to make
good soldered connections.
1/16''
3/4''
1 1/8''
3/4''
Adapter
1/8''
5/8''3/8''

Page 15GX2000/GX2100
7.4 EMERGENCY (CHANNEL 16 USE)
Channel 16 is known as the Hail and Distress Channel. An emergency may be
defined as a threat to life or property. In such instances, be sure the transceiver
is on and set to CHANNEL 16. Then use the following procedure:
1. Press the microphone push-to-talk switch and say “Mayday, Mayday, May-
day. This is , , ” (your vessel’s name).
2. Then repeat once: “Mayday, ” (your vessel’s name).
3. Now report your position in latitude/longitude, or by giving a true or mag-
netic bearing (state which) to a well-known landmark such as a navigation
aid or geographic feature such as an island or harbor entry.
4. Explain the nature of your distress (sinking, collision, aground, fire, heart
attack, life-threatening injury, etc.).
5. State the kind of assistance your desire (pumps, medical aid, etc.).
6. Report the number of persons aboard and condition of any injured.
7. Estimate the present seaworthiness and condition of your vessel.
8. Give your vessel’s description: length, design (power or sail), color and
other distinguishing marks. The total transmission should not exceed 1
minute.
9. End the message by saying “OVER”. Release the microphone button and
listen.
10. If there is no answer, repeat the above procedure. If there is still no re-
sponse, try another channel.
NOTE
The GX2000 and GX2100 have DSC Distress calling, that can transmit
a distress call digitally to all ships with compatible DSC radios. Refer to
section “11 DIGITAL SELECTIVE CALL”.

GX2000/GX2100Page 16
7.5 CALLING ANOTHER VESSEL (CHANNEL 16 OR 9)
Channel 16 may be used for initial contact (hailing) with another vessel.
However, its most important use is for emergency messages. This channel
must be monitored at all times except when actually using another channel.
It is monitored by the U.S. and Canadian Coast Guards and by other vessels.
Use of channel 16 for hailing must be limited to initial contact only. Call-
ing should not exceed 30 seconds, but may be repeated 3 times at 2-minute
intervals. In areas of heavy radio traffic, congestion on channel 16 resulting
from its use as a hailing channel can be reduced significantly in U.S. waters by
using channel 9 as the initial contact (hailing) channel for non-emergency
communications. Here, also, calling time should not exceed 30 seconds but
may be repeated 3 times at 2-minute intervals.
Prior to making contact with another vessel, refer to the channel charts in this
manual, and select an appropriate channel for communications after initial
contact. For example, Channels 68 and 69 of the U.S. VHF Charts are some of
the channels available to non-commercial (recreational) boaters. Monitor your
desired channel in advance to make sure you will not be interrupting other
traffic, and then go back to either channel 16 or 9 for your initial contact.
When the hailing channel (16 or 9) is clear, state the name of the other vessel
you wish to call and then “this is” followed by the name of your vessel and
your Station License (Call Sign). When the other vessel returns your call, im-
mediately request another channel by saying “go to,” the number of the other
channel, and “over.” Then switch to the new channel. When the new channel
is not busy, call the other vessel.
After a transmission, say “over,” and release the microphone’s push-to-talk
(PTT) switch. When all communication with the other vessel is completed, end
the last transmission by stating your Call Sign and the word “out.” Note that it
is not necessary to state your Call Sign with each transmission, only at the
beginning and end of the contact.
Remember to return to Channel 16 when not using another channel. Some
radios automatically monitor Channel 16 even when set to other channels or
when scanning.

Page 17GX2000/GX2100
7.6 MAKING TELEPHONE CALLS
To make a radiotelephone call, use a channel designated for this purpose, The
fastest way to learn which channels are used for radiotelephone traffic is to
ask at a local marina. Channels available for such traffic are designated Pub-
lic Correspondence channels on the channel charts in this manual. Some
examples for USA use are Channels 24, 25, 26, 27, 28, 84, 85, 86, and 87.
Call the marine operator and identify yourself by your vessel’s name, The marine
operator will then ask you how you will pay for the call (telephone credit card,
collect, etc.) and then link your radio transmission to the telephone lines.
The marine telephone company managing the VHF channel you are using
may charge a link-up fee in addition to the cost of the call.
7.7 OPERATING ON CHANNELS 13 AND 67
Channel 13 is used at docks and bridges and by vessels maneuvering in port.
Messages on this channel must concern navigation only, such as meeting and
passing in restricted waters.
Channel 67 is used for navigational traffic between vessels.
By regulation, power is normally limited to 1 Watt on these channels. Your
radio is programmed to automatically reduce power to this limit on these chan-
nels. However, in certain situations it may be necessary to temporarily use a
higher power. See page 23 (H/L key) for means to temporarily override the
low-power limit on these two channels.

GX2000/GX2100Page 18
8 INSTALLATION
8.1 LOCATION
The radio can be mounted at any angle. Choose a mounting location that:
• is far enough from any compass to avoid any deviation in compass read-
ing due to the speaker magnet
• provides accessibility to the front panel controls
• allows connection to a power source and an antenna
• has nearby space for installation of a microphone hanger
• the antenna must be mounted at least 3 feet from radio
• choose a mounting location that is at least 3 feet away from the radio's
antenna.
Note: To insure the radio does not affect the compass or radios performance is
not affected by the antenna location, temporarily connect the radio in the de-
sired location and:
a. Examine the compass to see if the radio causes any deviation
b. Connect the antenna and key the radio. Check to ensure the radio is
operating correctly by requesting a radio check.
8.2 MOUNTING THE RADIO
8.2.1 Supplied Mounting Bracket
The supplied mounting bracket allows overhead or desktop mounting.
Use a 13/64” (5.2-mm) bit to drill the holes to a surface which is more 0.4 inch
(10 mm) thick and can support more than 3.3 lbs (1.5 kg) and secure the
bracket with the supplied screws, spring washers, flat washers, and nuts.
DESKTOP MOUNTING OVERHEAD MOUNTING

Page 19GX2000/GX2100
8.2.2 Optional MMB-84 Flush Mount Bracket
1. Make a rectangular template for the flush mount measuring 2.6” H x
6.3” W (65 x 161 mm).
2. Use the template to mark the location where the rectangular hole is to be
cut. Confirm the space behind the dash or panel is deep enough to accom-
modate the transceiver (at least 6 inches deep).
There should be at least 1/2 inch between the transceiver’s heatsink and
any wiring, cables or structures.
3. Cut out the rectangular hole and insert the transceiver.
4. Fasten the brackets to the sides of the transceiver with the lock washer nut
combination; so that the mounting screw base faces the mounting surface
(see illustration below).
5. Turn the adjusting screw to adjust the tension so that the transceiver is
tight against the mounting surface.
Bracket
Lock-washer nut combination
Adjusting Screw

GX2000/GX2100Page 20
8.3 ELECTRICAL CONNECTIONS
CAUTION
Reverse polarity connections will damage the radio!
Connect the power cord and antenna to the radio. Antenna and Power Supply
connections are as follows:
1. Mount the antenna at least 3 feet away from the radio. At the rear of the
radio, connect the antenna cable. The antenna cable must have a PL259
connector attached. RG-8/U coaxial cable must be used if the antenna is
25 feet or more from the radio. RG58 cable can be used for distances less
than 25 feet.
2. Connect the red power wire to a 13.8 VDC ±20% power source. Connect
the black power wire to a negative ground.
3. If an optional remote extension speaker is to be used, refer to section 3.3
for connections.
4. It is advisable to have a Certified Marine Technician check the power out-
put and the standing wave ratio of the antenna after installation.
Fuse Replacement
To take out the Fuse from the Fuse Holder, hold
both ends of the Fuse Holder and pull the Fuse
Holder apart without bending the fuse Holder.
When you replace the Fuse, please confirm that
the Fuse is tightly fixed on the metal contact lo-
cated inside the Fuse Holder. If the metal contact
holding the fuse is loose, the Fuse holder may
heat up.
GPS Navigation Receiver
AccessoryCable
Optional Speaker
Antenna
Fuse
Red
Power Source
Black
Water proof
Deck Outlet
Optional CMP30 Remote MIC
Optional HAIL/PA Horn