Yaesu Musen 30053X30 VHF/FM MARINE TRANSCEIVER User Manual GX1256S p65
Yaesu Musen Co., Ltd. VHF/FM MARINE TRANSCEIVER GX1256S p65
Users Manual
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GX1256S Page 1
Compact and Simple Operation
Capable of connecting an optional enhanced RAM+ second sta-
tion remote microphone
RTCM SC-101 DSC Distress call with your exact position
DSC position request/send function and NMEA data input/out-
put to connect to GPS Plotter
DSC Group call feature included
Backlit Keypad and LCD
Channel Name, GPS Time or GPS Position Repeating shown on
the display
One-button access to Channel 16 and 9
NOAA Weather Alert
Versatile User-programmable Scan, Priority Scan and Dual
Watch
Microphone with Channel Selection
Access to all US, Canadian and International Channels
3 year waterproof warranty
with GPS connected
QUEST+ GX1256S
25 Watt VHF/FM
Marine Transceiver
Owner's Manual
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GX1256SPage 2
TABLE OF CONTENTS
SAFETY/WARNING INFORMATION .......................................................... 4
FCC RADIO LICENSE INFORMATION ...................................................... 5
STATION LICENSE ............................................................................................................................
5
RADIO CALL SIGN ............................................................................................................................
5
CANADIAN SHIP STATION LICENSING .........................................................................................
5
FCC / INDUSTRY CANADA INFORMATION ..................................................................................
5
FCC NOTICE ................................................................................................ 6
GETTING STARTED .................................................................................... 7
ABOUT VHF RADIO ..........................................................................................................................
7
SELECTING ANTENNA .....................................................................................................................
7
COAXIAL CABLE ...............................................................................................................................
8
1 GENERAL INFORMATION .................................................................... 9
2 PACKING LIST .................................................................................... 10
3 OPTIONS ............................................................................................. 10
4 INSTALLATION .................................................................................... 11
4.1 LOCATION ..................................................................................................................................
11
4.2 ELECTRICAL CONNECTIONS .................................................................................................
11
4.3 ACCESSORY CABLE ...............................................................................................................
12
4.4 CONNECTION OF GPS WITH NMEA OUTPUT .................................................................
13
4.5 CHECKING GPS CONNECTION ............................................................................................
13
4.6 OPTIONAL MMB-84 FLUSH MOUNT INSTALLATION ..........................................................
14
4.7 OPTIONAL CMP25 RAM+ MIC INSTALLATION ...................................................................
15
5 CONTROLS AND INDICATORS ........................................................ 16
5.1 CONTROLS AND CONNECTIONS .........................................................................................
16
6 BASIC OPERATION ........................................................................... 21
6.1 RECEPTION ..............................................................................................................................
21
6.2 TRANSMISSION .......................................................................................................................
21
6.3 TRANSMIT TIME-OUT TIMER (TOT) .....................................................................................
21
6.4 SIMPLEX/DUPLEX CHANNEL USE .......................................................................................
22
6.5 USA, CANADA, AND INTERNATIONAL MODE .....................................................................
22
6.6 NOAA WEATHER CHANNELS ...............................................................................................
21
6.7 NOAA WEATHER ALERT ........................................................................................................
23
6.8 NOAA WEATHER ALERT TESTING .....................................................................................
23
6.9 EMERGENCY (CHANNEL 16 USE) ......................................................................................
24
6.10 CALLING ANOTHER VESSEL (CHANNEL 16 OR 9) .......................................................
24
6.11 MAKING TELEPHONE CALLS .............................................................................................
25
6.12 OPERATING ON CHANNELS 13 AND 67 .........................................................................
25
6.13 PROHIBITED COMMUNICATIONS .......................................................................................
26
6.14 DUAL WATCH (TO CH16) ....................................................................................................
26
6.15 MEMORY SCANNING (M-SCAN) ..........................................................................................
26
6.16 PRIORITY SCANNING (P-SCAN) ..........................................................................................
27
6.17 POSITION INDICATION .........................................................................................................
27
6.18 TIME INDICATION .................................................................................................................
28
6.19 RESETTING THE TRANSCEIVER’S MICROPROCESSOR ...............................................
28
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GX1256S Page 3
7 DIGITAL SELECTIVE CALLING ........................................................ 29
7.1 GENERAL ..................................................................................................................................
29
7.2 DSC SCAN ...............................................................................................................................
30
7.3 USCG DSC WATCH ................................................................................................................
31
7.3.1 Maritime Mobile Service Identity (MMSI) ............................................................................
31
7.3.2 Progamming the MMSI .........................................................................................................
31
7.4 ADDITIONAL DIGITAL SELECTIVE CALLING INFORMATION ...........................................
32
7.5 DSC DISTRESS CALL .............................................................................................................
32
7.5.1 Transmitting A DSC Distress Call ........................................................................................
32
7.5.2 Receiving a distress Call .....................................................................................................
33
7.5.3 Receiving a distress relay Call ...........................................................................................
34
7.6 ALL SHIP CALL .......................................................................................................................
34
7.6.1 Transmitting an All Ships Call .............................................................................................
34
7.6.2 Receiving an All Ships Call .................................................................................................
35
7.7 INDIVIDUAL CALL ....................................................................................................................
35
7.7.1 Setting up the Individual / Position Call Directory ..............................................................
35
7.7.2 Setting up Individual Reply ...................................................................................................
36
7.7.3 Setting up Individual Call Ringer ........................................................................................
37
7.7.4 Transmitting an Individual Call ............................................................................................
37
7.7.5 Receiving an Individual Call ................................................................................................
38
7.7.6 Setting up the Call Waiting Function ..................................................................................
39
7.8 ADVANCED DSC CALL ..........................................................................................................
40
7.8.1 Group Call .............................................................................................................................
40
7.8.2 Position Request ...................................................................................................................
42
7.8.3 Position Send ........................................................................................................................
45
7.8.4 Receiving a geographical area call ....................................................................................
46
8 RADIO SETUP MODE ........................................................................ 47
8.1 LAMP ADJUSTING ...................................................................................................................
47
8.2 LCD CONTRAST ADJUSTING ...............................................................................................
47
8.3 KEY BEEP (ON OR OFF) ........................................................................................................
48
8.4 WEATHER ALERT (ON OR OFF) ............................................................................................
48
8.5 CHANNEL NAME CHANGE ....................................................................................................
49
8.6 TIME OFFSET ..........................................................................................................................
50
9 RAM+ MIC OPERATION ..................................................................... 51
9.1 RAM+ MIC CONTROLS ..........................................................................................................
51
9.2 INTERCOM OPERATION ........................................................................................................
54
9.3 DSC / RADIO SETUP MODE ..................................................................................................
55
10 MAINTENANCE .................................................................................. 56
10.1 REPLACEMENT PARTS ........................................................................................................
56
10.2 FACTORY SERVICE ..............................................................................................................
57
10.3 TROUBLESHOOTING CHART ..............................................................................................
58
11 CHANNEL ASSIGNMENTS ................................................................ 59
12 WARRANTY ........................................................................................ 65
13 SPECIFICATIONS ............................................................................... 69
TABLE OF CONTENTS
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GX1256SPage 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
conditions of its passengers and bystanders by maintaining the minimum
separation distance.
The safety distance is determined by the antenna gain. With a 0dBi gain
whip antenna the safety distance 0.6 meters (2 feet); with a 3 foot 3dBi gain
whip the safety distance is 1.0 meter (3.25 feet) and with an 8 foot 6dBi
fiberglass whip the safety distance is 1.2 meters (4 feet).
When passengers or bystanders are closer to the antenna than the limits
stated the operator must either cease transmitting or restrict operation to
low power. Failure to observe these restrictions will result in exceeding the
FCC RF exposure limits.
Antenna Installation:
The antenna must be located at least 0.6 m (2 feet) away from passengers
in order to comply with the FCC RF exposure requirements. The distance
given is for a zero gain whip antenna. Use of higher gain antennas will in-
crease this safety distance as discussed above.
For roof top installation, the antenna must be placed in the center of the
roof.
ON-LINE WARRANTY REGISTRATION
Please visit www.standardhorizon.com to register the QUEST+ 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 QUEST+,
you can visit the STANDARD HORIZON Web site to send an E-Mail or
contact the Product Support team at 800-767-2450 M-F 7:00-5:00PST.
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GX1256S Page 5
FCC RADIO LICENSE INFORMATION
Standard Horizon radios comply with the Federal Communication Commis-
sion (FCC) requirements that regulate the Maritime Radio Service.
STATION LICENSE
An FCC ship station license is no longer required for any vessel traveling in
U.S. waters which is under 20 meters in length. However, any vessel re-
quired 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 (506) and land station licenses can be downloaded via the Internet at
www.fcc.gov/forms. To obtain a form from the FCC, call (888) 225-5322.
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.
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
FCC/ INDUSTRY CANADA INFORMATION
The following data pertaining to the transceiver is necessary to fill out the
license 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 ................................................................. K6630053X30
Industry Canada Type Approval .......................................... 511B-30053X30
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GX1256SPage 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
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 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.
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GX1256S Page 7
GETTING STARTED
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 marine 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 ex-
pected distance can be greater than 5 miles in “line of sight”.
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 (dBi) 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, 3dBi gain antenna represents
twice as much gain over the imaginary antenna. The length of the antenna
you choose, however, must also be related to the size of your boat as FCC
RF exposure distances are increased with higher gain.
Typically a 3 foot 3dBi stainless steel whip is used on a sailboat mast.
The longer 8 foot 6dBi fiberglass whip primarily used on larger power boats,
that require the additional gain.
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GX1256SPage 8
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-8U 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''
3/4''
1 1/8''
1/8''
5/8''3/8''
Adapter
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GX1256S Page 9
1 GENERAL INFORMATION
The STANDARD HORIZON QUEST+ is a VHF/FM transceiver designed for
use in the frequency range of 156.025 to 163.275 MHz. The GX1256S re-
quires 13.8V for operation and has a switchable RF output power of 1 watt
or 25 watts.
The transceiver is capable of RTCM SC101 DSC (Digital Selective Calling)
operation.
The transceiver operates on all currently-allocated marine channels which
are switchable for use with either USA, International, or Canadian regula-
tions. It has an emergency channel 16 which can be immediately selected
from any channel by pressing the red [16/9] key. NOAA Weather channels
can also be accessed immediately by pressing the [WX] key.
Other features of the transceiver include: scanning, priority scanning, sub-
mersible mic, high and low voltage warning, and GPS repeatability.
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GX1256SPage 10
2 PACKING LIST
When the package containing the transceiver is first opened, please check
it for the following contents:
•GX1256S QUEST+ Transceiver (with White/Black Microphone)
• Mounting Bracket (with attaching hardware and hanger kit)
• Owner’s Manual
• Quick-Reference Card
• Power Cord
• Dust Cover
3 OPTIONS
MMB-84 ........................................................................Flush-Mount Bracket
CMP25B/W ............ Remote-Access Microphone (RAM+ Mic, Black/White)
CT-100 ............................................. 10-foot Extension Cable for RAM+ Mic
101W .................................................................... White Extension Speaker
201SW .................................................................. White Extension Speaker
201SWZ........................................... White Flush Mount Extension Speaker
201SB .................................................................... Black Extension Speaker
201SBK ............................................ Black Flush Mount Extension Speaker
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GX1256S Page 11
4 INSTALLATION
4.1 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
reading 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
The FCC RF exposure label should be visible to the operator in the installed
position. If not then a self adhesive panel label can be obtained from your
Standard Horizon Dealer, by calling (800) 767-2450, or by e-mailing
marinetech@vxstdusa.com
4.2 ELECTRICAL CONNECTIONS
CAUTION
Reverse polarity connections will damage the radio!
Connect the power cord and antenna to the radio. Antenna and Power Sup-
ply connections are as follows (see Figure 1):
1. Mount the antenna at least 3 feet away from the radio. At the rear of the
radio, connect the antenna cable. It must have a PL259 connector. 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
4.3 for connections.
4. It is advisable to have a Certified Marine Technician check the power
output and the standing wave ratio of the antenna after installation.
Figure 1. General Installation
GPS Navigation Receiver
Accessory Cable
Optional Speaker
Antenna
Fuse
Red
Power Source
Black
Water proof
Deck Outlet
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GX1256SPage 12
4.3 ACCESSORY CABLE
White: External speaker (+)
Shield: External speaker (–)
Blue: NMEA IN (+) from GPS navigation receiver
Green: NMEA common
Gray: NMEA OUT (+) to GPS navigation receiver
Brown: Test port (for the Service Technican)
When connecting the external speaker or GPS navigation receiver, strip off
about 1 inch (2.5 cm) of the specified wire’s insulation, then splice the ends
together.
Wire Color/Description
WHITE - External Speaker (+)
SHIELD - External Speaker (–)
GREEN - NMEA Ground
BLUE- NMEA Input (+)
GRAY- NMEA Output (+)
Connection Examples
Connect to external 4 Ohm audio speaker
Connect to external 4 Ohm audio speaker
Connect to NMEA (–) connection of GPS
Connect to NMEA (+) output of GPS
Connect to NMEA (+) input of GPS
External Speaker
Green
Gray
Blue
Shield
White
Brown
Green
Blue
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GX1256S Page 13
4.4 CONNECTION OF GPS WITH NMEA OUTPUT
Additional Information:
• The GPS must have the NMEA Output turned on and set to 4800 Baud
in the setup menu. If there is a selection for parity select none.
• For further information on interfacing /setting up your GPS. Please con-
tact the manufacturer of the GPS receiver.
•QUEST+ is corresponded with following NMEA sentence:
• NMEA-0183 version 2.0 or higher
• GLL, GGA, RMC and GNS (RMC sentence is recommended)
If you have further inquires, please feel free to contact us at:
Phone: (800) 767-2450
Web site: standardhorizon.com
Email: marinetech@vxstdusa.com
4.5 CHECKING GPS CONNECTION
After connections have been made between the QUEST+ and the GPS, a
small satellite icon will appear on the top right corner of the LCD display. To
see additional GPS information press and hold the [H/L(POS)] key until the
QUEST+ shows the Latitude and Longitude.
NOTE
The QUEST+ may be setup to show Lat/Lon or time received from a
connected GPS. To setup and show time refer to Section 6.18.
Manufacturer/Model
Lowrance Portable
Magellan Fixed Mount
Magellan Portable
Northstar
Raytheon 420
Raytheon 520 / 620
Raytheon RL SERIES
Simrad
Sitex Neptune, Nautilus
Wires
Orange
Black (GND)
Gray
Black (GND)
Orange
Black (GND)
Yellow
Black (GND)
Yellow
Brown
Blue
Brown
White
Brown
White
Brown
Gray
Brown
QUEST+
Blue
Green
Blue
Green
Blue
Green
Blue
Green
Blue
Green
Blue
Green
Blue
Green
Blue
Green
Blue
Green
Wires
Green
Blue
Brown
White
Blue
White
Black
Blue
Black (GND)
Brown
Black (GND)
Yellow
Green
Green
Black
White
Black
White
Black (GND)
Manufacturer/Model
STANDARD HORIZON
Furuno GP30, 36
Furuno GP1650, 1850
Garmin Fixed Mounts
Garmin Portables
JRC GPS500
JRC 100 SERIES
JRC 200 SERIES
Lowrance Fixed Mount
QUEST+
Green
Gray
Blue
Blue
Green
Blue
Green
Blue
Green
Blue
Green
Blue
Green
Blue
Green
Blue
Green
Blue
Green
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GX1256SPage 14
4.6 OPTIONAL MMB-84 FLUSH MOUNT INSTALLATION
1. Make a rectangular template for the flush mount measuring 2” H x
5-5/16” W.
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 ac-
commodate 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 Figure 2).
5. Turn the adjusting screw to adjust the tension so that the transceiver is
tight against the mounting surface.
6. Fix self-adhesive FCC Exposure Label supplied with MMB-84 kit on the
panel next to the transceiver where it can clearly seen by the operator.
Figure 2. MMB-84 Flush Mount Instllation
Bracket
Adjusting Screw
Lock-washer nut combination
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GX1256S Page 15
4.7 OPTIONAL CMP25 RAM+ MIC INSTALLATION
1. Connect the RAM+ MIC Cable to the RAM MIC CONNECTOR on the
rear panel, then tighten the Cable Nut (See Figure 3).
2. Referring to Figure 3, make a 1.2” (30 mm) hole in the wall, then insert
the RAM+ MIC Cable into this hole. Connect the Gasket and Mount Base
to the RAM+ MIC Cable Connector using the Nut.
3. Drill the four Screw holes (approx. 2 mm) on the wall, then install the
Mounting Base to the wall using four screws.
4. Put the Rubber Cap on to the Nut. The installation is now completed.
Figure 3. RAM+ MIC Installation
Wall
Gasket
Cap
Nut
RAM MIC Cable
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GX1256SPage 16
5 CONTROLS AND INDICATORS
NOTE
This section defines each control of the transceiver. See Figure 4 for
location of controls. For detailed operating instructions refer to chapter
6 of this manual.
5.1 CONTROLS AND CONNECTIONS
POWER SWITCH/VOLUME CONTROL
Turns the transceiver on and off as well as adjusts the audio volume. To
turn the transceiver on press and hold this knob until the LCD turns on.
To turn it off, press and hold this knob until the LCD turns off. When the
power is turned on, the transceiver is set to the last selected channel.
Secondary Use
When the transceiver is turned on while the [SCAN(MEM)] and [WX]
keys are held down, the internal microprocessor is reset. This clears the
memory and all user-programmed settings, such as scan memory. This
condition is known as the default condition, the same as when shipped
from the factory. For a list of these defaults, see the section on Resetting
the Transceiver’s Microprocessor.
NOTE
Resetting the microprocessor will not erase DSC MMSI and Direc-
tory Call information.
SQUELCH CONTROL (SQL)
Sets the point at which random noise on the channel does not activate
the audio circuits but a received signal does. This point is called the
squelch threshold. Further adjustment of the squelch control will degrade
reception of wanted transmissions.
KEYPAD
[16/9] Key
Immediately recalls channel 16 from any channel location. Holding down
this key recalls channel 9. Pressing the [16/9] key again reverts to the
previous selected working channel.
Secondary use
Please see secondary use for the [WX] key.
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GX1256S Page 17
Figure 4. Controls and Connectors
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GX1256SPage 18
[WX] Key
Immediately recalls the previously selected NOAA weather channel from
any channel location.
Secondary use
1. Holding down the [16/9] key while pressing the [WX] key changes
the mode from USA to International or Canadian.
2. Holding down the [WX] and [SCAN(MEM)] key while turning the power
on resets the microprocessor and erases scan channels from memory.
This clears the memory and establishes the factory-set defaults. For
a list of these defaults, see the section on Resetting the Transceiver’s
Microprocessor.
[DW(IC)] Key
Watches for a transmission on CH16 and another selected channel until
either signal is received. (Dual watch)
NOTE: When the DSC SCANNING feature is enabled(see section 7.10
DSC SCANNING), the radio watches for a transmission on CH16, an-
other selected channel, and CH70 until either signal is received (Triple
watch).
Secondary use
Press and hold [DW(IC)] key, when the optional RAM+ Mic is connected,
intercom operation will operate between radio and RAM+ Mic.
[H/L(POS)] Key
Toggles between high and low power. When the [H/L(POS)] key is pressed
while the transceiver is on channel 13 or 67, the power will temporarily
switch from LO to HI power until the PTT is released. The [H/L(POS)]
key does not function on transmit inhibited and low power only channels.
Secondary use
Press and hold the [H/L(POS)] key to display the Position Data on the
LCD, when connected to the GPS receiver.
[SCAN(MEM)] Key
1. Starts and stops scanning of programmed channels.
2. If held while the [UP] or [DOWN] key on the microphone are pressed
or [UP] or [DOWN] key on radio are pressed, the radio will show the
channels programmed in scan memory. This function will not work if
the unit is scanning.
NOTE: The priority channel is channel 16 only.
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GX1256S Page 19
[CALL/SET(MENU)] Key
The [CALL/SET(MENU)] key functions as the enter key.
Secondary use
Press the [CALL/SET(MENU)] key to access the DSC OPERATION
menu. The INDIVIDUAL and ALL SHIPS CALLS functions can be ac-
cessed from the DSC OPERATION menu.
Press and hold the [CALL/SET(MENU)] key to access the RADIO or
DSC setup menu. The following functions can be accessed in the menu.
[DISTRESS] Key
Used to send a DSC Distress Call. To send the distress call see section
6.2 (Sending a Distress Call).
[UP] and [DOWN] Keys
The [UP] and [DOWN] keys are used to select a desired channel and to
select items in the DSC OPERATION and SETUP menus. The [UP] or
[DOWN] key on the microphone can also be used to select channels.
RADIO SETUP MENU
DSC SETUP MENU
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GX1256SPage 20
RAM MIC CONNECTOR
Connects the QUEST+ to the enhanced RAM+ MIC (Remote Access
Microphone). Refer to section 9 RAM+ MIC OPERATION.
ACCESSORY CONNECTION CABLE
Connects the radio to a GPS, and an external speaker.
DC INPUT CABLE
Connects the radio to a DC power supply of 13.8V
ANTENNA JACK
Connects an antenna to the transceiver. Use a marine VHF antenna with
an impedance of 50 ohms.
PTT (Push-To-Talk) SWITCH
Keys the transmitter.
MICROPHONE
Transmits the voice message with reduction of background noise.
[UP()] and [DOWN()] KEYS
The [UP()] and [DOWN()] on the microphone function the same as
the [UP] and [DOWN] key on the front panel of the transceiver.
[16/9] Key
Pressing the [16/9] key Immediately recalls channel 16 from any loca-
tion. Press and hold the [16/9] key to recall channel 9. Pressing the
[16/9] key again will revert the radio to the last channel selected.
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6 BASIC OPERATION
6.1 RECEPTION
1. After the transceiver has been installed, ensure that the power supply
and antenna are properly connected.
2. Press and hold the VOL/PWR knob until the radio turns on.
3. Turn the SQL knob fully counterclockwise. This state is known as “squelch
off”.
4. Turn up the VOL/PWR knob until noise or audio from the speaker is at a
comfortable level.
5. Turn the SQL knob clockwise until the random noise disappears. This
state is known as the “squelch threshold.”
6. Press the [UP] or [DOWN] key to select the desired channel. Refer to the
channel chart on page 60 for available channels.
7. When a message is received, adjust the volume to the desired listening
level. The “BUSY” indicator in the LCD is displayed indicating that the
channel is being used.
6.2 TRANSMISSION
1. Perform steps 1 through 6 of RECEPTION.
2. Before transmitting, monitor the channel to ensure it is clear. THIS IS AN
FCC REQUIREMENT!
3. Press the PTT (push-to-talk) switch. The TX indicator on the LCD is dis-
played.
4. Speak slowly and clearly into the microphone.
5. When the transmission is finished, release the PTT switch.
NOTE
This is a noise-canceling microphone. The oval slot on the bottom of
microphone should be positioned within 1 inch (2.5 cm) from the
mouth for optimum performance.
6.3 TRANSMIT TIME - OUT TIMER (TOT)
When the PTT switch on the microphone is held down, transmit time is limited
to 5 minutes. This limits unintentional transmissions due to a stuck micro-
phone. About 10 seconds before automatic transmitter shutdown, a warning
beep will be heard from the speaker(s). The transceiver will automatically go
to receive mode, even if the PTT switch is continually held down. Before trans-
mitting again, the PTT switch must first be released and then pressed again.
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6.4 SIMPLEX/DUPLEX CHANNEL USE
Refer to the VHF MARINE CHANNEL CHART (page 60) for instructions on
use of simplex and duplex channels.
NOTE
All channels are factory-programmed in accordance with FCC (USA),
Industry Canada (Canada), and International regulations. Mode of op-
eration cannot be altered from simplex to duplex or vice-versa.
6.5 USA, CANADA, AND INTERNATIONAL MODE
1. To change the modes, hold the [16/9] key and press the [WX] key. The
mode changes from USA to International to Canadian with each press of
the [WX] key.
2. “U” will be displayed on the LCD for USA mode, “I” will be displayed for
International mode, and “C” will be displayed for Canadian mode.
3. Refer to the VHF MARINE CHANNEL CHART (page 60) for allocated
channels in each mode.
6.6 NOAA WEATHER CHANNELS
1. To receive a NOAA weather channel, press the [WX] key from any chan-
nel. The transceiver will go to the last selected weather channel.
2. Press the [UP] or [DOWN] key on the microphone or on front panel to
select a different NOAA weather channel.
3. To exit from the NOAA weather channels, press the [WX] key. The trans-
ceiver returns to the channel it was on prior to a weather channel.
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6.7 NOAA WEATHER ALERT
In the event of extreme weather disturbances, such as storms and hurri-
canes, the NOAA (National Oceanic and Atmospheric Administration) sends
a weather alert accompanied by a 1050 Hz tone and subsequent weather
report on one of the NOAA weather channels. When the Weather Aleart
feature is enabled (see section 8.4 WEATER ALERT), the transceiver is
capable of receiving this alert if the following is performed:
1. Program NOAA weather channels into the transceiver’s memory for scan-
ning. Follow the same procedure as for regular channels under Section
6.15.
2. Press the [SCAN(MEM)] key once to start memory scanning or hold
down the [SCAN(MEM)] key during memory scanning to start priority
scanning.
3. The programmed NOAA weather channels will be scanned along with
the regular-programmed channels. However, scanning will not stop on a
normal weather broadcast unless a NOAA alert is received.
4. When an alert is received on a NOAA weather channel, scanning will
stop and the transceiver will emit a loud beep to alert the user of a NOAA
broadcast.
5. Press the [WX] key to stop the alert tone and receive the weather report.
NOTE
If the [WX] key is not pressed the alert tone will be emitted for 5 minutes
and then the weather report will be received.
NOTE
The Weather Aleart feature is also engaged while the transceiver is
received on the one of the NOAA weather channel.
6.8 NOAA WEATHER ALERT TESTING
In the event of a major storm or other appreciable weather condition requir-
ing vessels at sea or other bodies of water to be notified, the NOAA (Na-
tional Oceanographic and Atmospheric Administration) broadcasts a 1050
Hz tone that some marine VHF radios can detect. (Refer to above section
“NOAA WEATER ALERT” on how to use this feature.) This tone, when de-
tected, will produce a loud beep from the radio speaker to signal that a
weather alert is being broadcast.
In order to test this system, the NOAA broadcasts the 1050 Hz tone every
Wednesday, sometime between 11 AM and 1 PM.
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6.9 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,
Mayday. 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 naviga-
tion 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
response, try another channel.
6.10 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 ves-
sels. Use of channel 16 for hailing must be limited to initial contact
only. Calling 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
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GX1256S Page 25
some of the channels available to non-commercial (recreational) boaters.
Monitor your desired channel in advance to make sure you will not be inter-
rupting 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, immediately request another channel by saying “go to,” the num-
ber 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.
6.11 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
Public 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 (tele-
phone 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.
6.12 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 meet-
ing 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
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GX1256SPage 26
radio is programmed to automatically reduce power to this limit on these
channels. However, in certain situations it may be necessary to temporarily
use a higher power. See page 18 ([H/L(POS)] key) for means to temporarily
override the low-power limit on these two channels.
6.13 PROHIBITED COMMUNICATIONS
The FCC prohibits the following communications:
• False distress or emergency messages:
• Messages to “any boat” except in emergencies and radio tests;
• Messages to or from a vessel on land;
• Transmission while on land;
• Obscene, indecent, or profane language (potential fine of $10,000).
6.14 DUAL WATCH (TO CH16)
1. Adjust the SQL knob until the background noise disappears.
2. Select the channel you wish to dual watch to Ch16.
3. Press the [DW(IC)] key. The display will scan between CH16 and the
channel that was selected in step 2.
If a transmission is received on the channel selected in
step 2, the QUEST+ will dual watch to Ch16.
4. To stop Dual Watch press the [DW(IC)] key again.
6.15 MEMORY SCANNING (M-SCAN)
NOTE
• During scanning, the dot matrix area of the LCD will show M-SCAN or
P-SCAN depending on the scan mode selected.
• If GPS position is displayed this icon will be hidden.
1. Adjust the SQL knob until background noise disappears.
2. Select a desired channel to be scanned using the [UP] or [DOWN] key.
Press and hold the [SCAN(MEM)] key, “MEM” will ap-
pear on the LCD which indicates the channel has been
programmed into the transceivers memory.
3. Repeat step 2 for all the desired channels to be scanned.
4. To DELETE a channel from the transceiver’s memory,
press and hold the [SCAN(MEM)] key, “MEM” will disappear in the LCD.
5. To start scanning, press the [SCAN(MEM)] key. Scan-
ning will proceed from the lowest to the highest pro-
grammed channel number and will stop on a channel
when a transmission is received.
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GX1256S Page 27
(Latitude) (Longitude)
(No GPS Signal)
6. The channel number will blink during reception.
7. To stop scanning, press the [SCAN(MEM)], [16/9], [WX], or PTT key.
6.16 PRIORITY SCANNING (P-SCAN)
1. The priority channel is set to channel 16.
2. For priority scanning during M-SCAN, press and hold
the [SCAN(MEM)] key, until P-SCAN appears in the LCD.
Scanning will proceed between the memorized chan-
nels and the priority channel. The priority channel will
be scanned after each programmed channel.
: When DSC Scanning method is enabled. Default is DSC scan is ON.
3. The scanning will be performed while receiving the MEM
CH (memorized channel).
4. To stop scanning, press the [SCAN(MEM)], [16/9], [WX],
or PTT key.
NOTE
Triple watch (T/W) means the radio is watching CH70 for DSC Calls.
Dual watch (D/W) means the radio is not watching CH70 for DSC Calls.
6.17 POSITION INDICATION
The transceiver has the ability to display the vessel’s position (LAT/LON) for
Confirmation of the data, if connected to a GPS receiver.
1. Press and hold the [H/L(POS)] key, dis-
plays “LAT” and “LON” information al-
ternately every two seconds.
If the GPS receiver receives no signal,
the display will be as shown in the illus-
tration.
2. To hide the position information, press and hold the
[H/L(POS)] key again.
MEM CH. CH. 16 CH. 70 MEM CH. CH. 16 CH. 70
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6.18 TIME INDICATION
Press and hold the [16/9] and [H/L(POS)] keys while turn-
ing the transceiver on, the transceiver will display the TIME
on the upper side, if connected to a GPS receiver.
NOTE
The TIME OFFSET should be set to local time in the DSC/RADIO setup
mode when the radio is connected the GPS navigation receiver. To ad-
just TIME OFFSET to your local time, refer to section 7.6 TIME OFF-
SET.
6.19 RESETTING THE TRANSCEIVER’S MICROPROCESSOR
Resetting the microprocessor restores the initial, factory supplied conditions
in the transceiver. These are called the default conditions.
To reset the microprocessor, first turn the transceiver off. Then while press-
ing the [WX] and [SCAN(MEM)] keys, turn the transceiver on. The default
conditions are:
• No channels in SCAN memory.
• Channel 16 will be selected when the transceiver is turned on.
• WX channel 01 will be recalled when the [WX] key is pressed.
• Key beep will be on.
NOTE
Resetting the microprocessor will not erase DSC MMSI and Directory
information.
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7 DIGITAL SELECTIVE CALLING
7.1 GENERAL
WARNING
This radio is designed to generate a digital maritime distress and safety
call to facilitate search and rescue. To be effective as a safety device,
this equipment must be used only within communication range of a shore-
based VHF marine channel 70 distress and safety watch system. The
range of signal may vary but under normal conditions should be ap-
proximately 20 nautical miles.
Digital Selective Calling is a semi-automated method of establishing a radio
call, it has been designated by the International Maritime Organization (IMO)
as an international standard for establishing VHF, MF and HF radio calls. It
had also been designated as part of the Global Maritime Distress and Safety
System (GMDSS). It is planned that DSC will eventually replace aural watches
on distress frequencies and will be used to announce routine and urgent
maritime safety information broadcasts.
This new system will allow mariners to instantly send a distress call with
GPS position (when connected to the transceiver) to the US Coast Guard
and other vessels within range of the transmission. DSC will also allow mari-
ners to initiate or receive distress, urgency, safety routine, POS Request,
POS Send and Group calls to or from another vessel equipped with a DSC
transceiver.
WARNING STICKER
A DSC Warning sticker is in-
cluded with the QUEST+. To
comply with FCC regula-
tions this sticker must be
mounted in a location that
can be easily viewed from
the location of the QUEST+.
Make sure the chosen loca-
tion is clean and dry before
applying the sticker.
WARNING
STICKER
CALL
SET
SCAN H/L
DW
WX
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7.2 DSC SCAN
When the radio is shipped from the factory it is programmed so CH70 (the
DSC channel) is scanned at all times. There is a selection in the SETUP
MENU to disable the DSC SCAN. However, turning off DSC SCAN will dis-
able the radio from receiving DSC calls i.e.: Individual Call, All Ships Call,
Distress Call and Position Requests. If you want to use any of the functions
the selection must be left ON.
To Change DSC SCAN Method:
1. Press and hold down the [CALL/SET(MENU)] key until
“RADIO SETUP” appears.
2. Press the [DOWN] key to select “DSC SETUP.”
3. Press the [CALL/SET(MENU)] key, then press the [UP]
or [DOWN] key to select “DSC SCAN.”
4. Press the [CALL/SET(MENU)] key to enable setting this
item (The number in the display will flash).
5. Press the [UP] or [DOWN] key to select “on” or “oF (off).”
6. Press the [CALL/SET(MENU)] key to store the selected
setting.
7. Press the [UP] or [DOWN] key to select “EXIT,” then
press the [CALL/SET(MENU)] key.
8. Press the [UP] or [DOWN] key to select “EXIT,” then
press the [CALL/SET(MENU)] key to return to the nor-
mal operation.
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7.3 USCG DSC WATCH
The USCG has plans to upgrade its VHF National Distress System (expected
by 2005), so at the time of printing only larger vessels that are required to
carry VHF DSC radios will be able to hear your distress transmission.
7.3.1 Maritime Mobile Service Identity (MMSI)
What is an MMSI?
An MMSI is a nine digit number used on Marine Transceivers capable of
using Digital Selective Calling (DSC). This number is used like a telephone
number to selectively call other vessels.
NOTE
THIS NUMBER MUST BE PROGRAMMED INTO THE RADIO TO OP-
ERATE THE QUEST+ DSC FUCTIONS.
How can I obtain an MMSI assignment?
Boat US offers free MMSI numbers. Visit the following to register:
http://www.boatus.com/mmsi/.
7.3.2 Programming the MMSI
NOTE
User MMSI can be input only twice. If the user tries to input MMSI more
than twice, the radio will show the display on the right.
If the user needs to change the MMSI more than twice,
the transceiver will have to be sent to Factory Service.
Refer to the section 10.2 FACTORY SERVICE.
1. Press and hold down the [CALL/SET(MENU)] key until
“RADIO SETUP” appears.
2. Press the [DOWN] key to select “DSC SET.”
3. Press the [CALL/SET(MENU)] key, then press the
[DOWN] key to select “USER MMSI.”
4. Press the [CALL/SET(MENU)] key to enable setting this
item (The number in the display will flash).
5. Press the [UP] or [DOWN] key to select first number of
your MMSI, then press the [CALL/SET(MENU)] key to
define the setting.
6. Repeat above step to set your MMSI (up to 9 digits).
When the last number of your MMSI is in place, press
and hold the [CALL/SET(MENU)] key to store your MMSI.
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7. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key.
8. Press the [UP] or [DOWN] key to select “EXIT,” then
press the [CALL/SET(MENU)] key to return to the nor-
mal operation.
7.4 ADDITIONAL DIGITAL SELECTIVE CALLING INFORMATION
For additional information the USCG has an excellent site that should be
visited at www.navcen.uscg.mil/marcoms/gmdss/dsc.html.
7.5 DSC DISTRESS CALL
The QUEST+ is capable of transmitting and receiving DSC Distress mes-
sages to all DSC radios. The QUEST+ may be connected to a GPS to also
transmit the Latitude, Longitude of the vessel.
7.5.1 Transmitting A DSC Distress Call
NOTE
To be able to transmit a DSC distress call a MMSI number must be
programmed, refer to section 7.3.2 Programming the MMSI
In order for your ships location to be transmitted a GPS must be connected
to the QUEST+, refer to section 4.4 CONNECTION OF GPS WITH NMEA
OUTPUT.
1. Lift the red spring loaded DISTRESS cover and press
the [DISTRESS] key. The “DISTRESS” will appear on
the LCD.
2. Press and hold the [DISTRESS] key. The LCD will count
down (3, 2, 1) following this the QUEST+ will transmit
the Distress Call.
3. When the distress signal is sent, the “TX” icon will ap-
pear on the LCD. After the message has been sent, the
Distress Alarm will sound.
4. The transceiver “shadow-watches” for a transmission
between CH16 and CH70 until an acknowledgment sig-
nal is received. “RECEIVED ACK” will scroll on the LCD.
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GX1256S Page 33
5. If no acknowledgment is received, the distress call is repeated in 3.5 to
4.5 minute intervals until an acknowledgment is received.
6. To cancel a Distress Call
1) Press the [16/9] key
2) Press the [WX] key
3) Turn off the radio
4) Press the [DISTRESS] key, then press the [UP] or [DOWN] key until
“CANCEL” is shown on the LCD. Press the [CALL/SET(MENU)] key.
7. When a distress acknowledgment is received, a distress alarm sounds
and channel 16 is automatically selected.
8. To cancel the alarm, press any key.
NOTE
If the radio is receiving on a working channel or transmitting on a work-
ing channel, DSC calls will not be received.
7.5.2 Receiving a distress call
1. A distress call is received. “RECEIVED DISTRESS” will
appear on the LCD, and an emergency alarm will be heard.
Channel 16 is automatically selected.
2. Press any key to stop the alarm.
3. Press the [UP] or [DOWN] key to select the receiving
distress data:
• MMSI or Station Name • TIME (UTC)
• Latitude • Longitude
NOTE
• If the received distress data does not include the position data, “NO
POSITION DATA” will scroll on the LCD.
• You must continue monitoring channel 16 as a coast station may re-
quire assistance in any rescue attempt.
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7.5.3 Receiving a distress relay call
1. A distress relay call is received. “RECEIVED RLY” will
appear on the LCD, and an emergency alarm will be
heard.
Channel 16 is automatically selected.
2. Press any key to stop the alarm.
3. Press the [DOWN] key to appear the receiving distress
data (MMSI or Station Name).
NOTE
You must continue monitoring channel 16 as a coast station may re-
quire assistance in any rescue attempt.
7.6 ALL SHIPS CALL
The All Ships Call function allows contact to be established with other vessel
stations without having their ID in the individual calling directory.
Also, priority for the call can be designated as Urgency, Safety or Routine.
URGENCY Call: This type of call is used when a vessel may not truly be in
distress, but have a potential problem that may lead to a
distress situation (PAN, PAN,Call Type).
SAFETY Call: Used to transmit boating safety information to other ves-
sels (Security Call Type).
This message usually contains information about an overdue boat, debris in
the water. Loss of a navigation aid or an important meteorological message.
7.6.1 Transmitting An All Ships Call
1. Select the traffic channel (for voice communication).
2. Press the [CALL/SET(MENU)] key.
3. Press the [DOWN] key to select “ALL SHIPS.”
4. Press the [CALL/SET(MENU)] key again.
5. Press the [DOWN] key to select the nature of call (“UR-
GENCY,” or “SAFETY”).
6. Press the [CALL/SET(MENU)] key to transmit the se-
lected type of ALL SHIPS DSC call.
7. After the ALL SHIPS CALL is transmitted, the transceiver
will wait on CH16. Call has been transmited.
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7.6.2 Receiving An All Ships Call
1. An all ships call is received. “RECEIVED ALL SHIPS”
will appear on the LCD, and an emergency alarm will be
heard.
Channel 16 is automatically selected.
2. Press any key to stop the alarm.
3. Press the [UP] or [DOWN] key to select the receiving
distress data:
• MMSI or Station Name
4. Monitor channel 16 or traffic channel until the communi-
cation is completed.
7.7 INDIVIDUAL CALL
This feature allows the user to contact another user vessel with a DSC radio
and automatically switch the receiving DSC radio to a desired working chan-
nel. This feature is similar to calling a vessel on CH16 and requesting to go
to a another channel.
7.7.1 Setting up the Individual / Position Call Directory
The QUEST+ has a DSC directory that allows you to store a vessel or per-
son names and the MMSI number associated with vessels you wish to trans-
mit Individual calls, Position Requests and Position Send transmissions.
To transmit an Individual call you must program this directory with informa-
tion of the persons you wish to call, similar to a cellular phones telephone
directory.
1. Press and hold down the [CALL/
SET(MENU)] key until “RADIO SETUP”
appears.
2. Press the [DOWN] key to select “DSC
SETUP”.
3. Press the [CALL/SET(MENU)] key to
select “INDIVIDUAL DIRECTORY.”
4. Press the [CALL/SET(MENU)] key to
select “ADD.”
5. Press the [CALL/SET(MENU)] key to enable setting this
item.
6. Press the [UP] or [DOWN] key to select a first character
of the Station Name, then press the [CALL/SET(MENU)]
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GX1256SPage 36
key to move to next character.
7. Repeat step 6 as many times as necessary to complete
the Station Name (up to 12 characters).
8. Press and hold the [CALL/SET(MENU)] key to store the
Station Name and enable setting the MMSI ID code.
9. Press the [UP] or [DOWN] key to select the first digit of
the MMSI ID code, the press the [CALL/SET(MENU)]
key to move to next character.
10. Repeat step 9 as many times as necessary to complete
the MMSI ID code (9 digits).
11. Press and hold the [CALL/SET(MENU)] key to store the
MMSI ID code.
12. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key.
13. Press the UP or [DOWN] key to select “EXIT,” then press
the [CALL/SET(MENU)] key to return to the normal op-
eration.
7.7.2 Setting up Individual Reply
Allows setting up the radio to automatically (default setting) or manually
respond to a DSC Individual call requesting you to switch to a working chan-
nel for voice communications. When Manual is selected the MMSI of the
calling vessel is shown allowing you to see who is calling. This function is
similar to caller id on a cellular phone.
1. Press and hold down the [CALL/SET(MENU)] key until “RADIO SETUP”
appears.
2. Press the[DOWN] key to select “DSC
SETUP.”
3. Press the [CALL/SET(MENU)] key, then
press the [UP] or [DOWN] key to select
“INDIVIDUAL REPLY.”
4. Press the [CALL/SET(MENU)] key to enable setting this
item.
5. Press the [UP] or [DOWN] key to select “AU (Automatic)”
or “oF (off).”
6. Press the [CALL/SET(MENU)] key to store the selected
setting.
7. Press the [UP] or [DOWN] key to select “EXIT,” then
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GX1256S Page 37
press the [CALL/SET(MENU)] key.
8. Press the [UP] or [DOWN] key to select “EXIT,” then
press the [CALL/SET(MENU)] key to return to the nor-
mal operation.
7.7.3 Setting up Individual Call Ringer
When a Individual call is received the radio will produce a ringing tone for 3
minutes. This selection allows the Individual Call ringer time to be changed.
1. Press and hold down the [CALL/SET(MENU)] key until
“RADIO SETUP” appears.
2. Press the [DOWN] key to select “DSC SETUP.”
3. Press the [CALL/SET(MENU)] key, then press the [UP]
or [DOWN] key to select “INDIVIDUAL RINGER.”
4. Press the [CALL/SET(MENU)] key to enable setting this
item.
5. Press the [UP] or [DOWN] key to select ringing time of a
INDIVIDUAL CALL.
4:3 minutes continuously
3:15 times
2:10 times
1:5 times
6. Press the [CALL/SET(MENU)] key to store the selected
ringing time.
7. Press the [UP] or [DOWN] key to select “EXIT,” then
press the [CALL/SET(MENU)] key.
8. Press the [UP] or [DOWN] key to select “EXIT,” then
press the [CALL/SET(MENU)] key to return to the nor-
mal operation.
7.7.4 Transmitting an Individual Call
This feature allows the user to contact another vessel with a DSC radio. This
feature is similar to calling a vessel on CH16 and requesting to go to an-
other channel. Select the traffic channel for voice communication.
1. Select the traffic channel for voice communication.
2. Press the [CALL/SET(MENU)] key.
3. Press the [CALL/SET(MENU)] key again. The individual
address will appear.
4. Press the [UP] or [DOWN] key to select the individual you want to con-
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GX1256SPage 38
tact.
5. To cancel, if needed, press the [UP] or [DOWN] key un-
til the “EXIT” icon appear. Then press the [CALL/
SET(MENU)] key. This procedure can be also canceled
by pressing the WX or 16/9 key.
6. Press the [CALL/SET(MENU)] key to transmit the individual DSC signal.
7. After an INDIVIDUAL CALL is transmitted, the transceiver will wait 8 sec-
onds for the acknowledgment. If the reply signal is not received, the
transceiver will transmit again.
8. After the second INDIVIDUAL CALL is transmitted, if the
reply signal is not received, “NO REPLY” icon will ap-
pear on the LCD to prompt the user to send the call
again or exit the mode.
9. When an individual call acknowledgment “able to com-
ply” is received, the established channel is automatically selected and
an alarm sounds.
10. When an individual call acknowledgment with “unable to comply” is re-
ceived, the established channel is automatically selected.
7.7.5 Receiving an Individual Call
When receiving an individual call, an acknowledgment must be sent back to
the calling station. Please refer to a selection in the 7.2.2 “Setting up Indi-
vidual Reply” that allows the acknowledgment to be transmitted manually or
automatically.
Automatic Reply:
1. An individual call is received. “RECEIVED INDIVIDUAL” will appear on
the LCD, and an individual call alarm sounds. Then the
radio automatically switches to the requested channel.
2. Press any key to stop the alarm, then acknowledgment
is transmitted automatically.
3. Press the PTT on the microphone and talk to the calling ship.
Manual Reply:
1. An individual call is received. “RECEIVED INDIVIDUAL”
will appear on the LCD, and an individual call alarm
sounds. Then the radio automatically switches to the
requested channel.
2. Press any key to stop the alarm.
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GX1256S Page 39
3. Select type of reply function “ABLE” or “UNABLE” by
using the [UP] or [DOWN] key. In the Automatic mode,
the acknowledgment is transmitted automatically.
4. Press the PTT on the microphone and talk to the calling
ship.
7.7.6 Setting Up the Call Waiting Function
Allows the QUEST+ to be setup to reply (ABLE) or set the radio so it trans-
mits a call that advises to the vessel the person is UNABLE to reply to the
call at this time. This function is similar to a answering machine. When set
up in UNABLE and a individual call is received the Individual call from the
other vessel is logged in the CALL WAITING directory for you to review and
call back at a later time.
1. Press and hold down the [CALL/SET(MENU)] key until
“RADIO SETUP” appears.
2. Press the [DOWN] key to select “DSC SETUP.”
3. Press the [CALL/SET(MENU)] key, then press the [UP]
or [DOWN] key to select “INDIVIDUAL ACK.”
4. Press the [CALL/SET(MENU)] key to enable setting this
item.
5. Press the [UP] or [DOWN] key to select “Ab (Able)” or
“Un (Unable).”
6. Press the [CALL/SET(MENU)] key to store the selected
setting.
7. Press the [UP] or [DOWN] key to select “EXIT,” then
press the [CALL/SET(MENU)] key.
8. Press the [UP] or [DOWN] key to select “EXIT,” then
press the [CALL/SET(MENU)] key to return to the nor-
mal operation.
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7.8 ADVANCED DSC CALLS
7.8.1 Group Call
This feature allows the user to contact a group of specific vessels (example
members of a yacht club) using DSC radios with Group call function to auto-
matically switch to a desired channel for voice communications.
7.8.1.1 Setup a Group Call
For this function to operate the same Group MMSI must be programmed
into all the DSC VHF radios within the group of vessels that will be using this
feature. The group MMSI is a 9 digit (first digit permanently set to “0”) that
will allow other radios to call your vessel along with others to automatically
switch to a working channel for voice communications. This function is very
useful for yacht clubs and vessels traveling together that want to collectively
make announcements on a predetermined channel.
1. Press and hold down the [CALL/SET(MENU)] key until
“RADIO SETUP” appears.
2. Press the [DOWN] key to select “DSC SETUP.”
3. Press the [CALL/SET(MENU)] key, then press the
[DOWN] key to select “GROUP DIR.”
4. Press the [CALL/SET(MENU)] key to enable setting this
item.
5. Press the [UP] or [DOWN] key to select “ADD,” then
press the [CALL/SET(MENU)] key.
6. Press the [UP] or [DOWN] key to select the first letter of
the name of the group you want to reference in the di-
rectory.
7. Press the [CALL/SET(MENU)] key to store the first let-
ter in the name. Press the [CALL/SET(MENU)] key to
move the cursor one space to the right.
8. Repeat step 6 and 7 until the name is complete. The
name can consist of up to eleven characters, if you do
not use all eleven characters press the [CALL/
SET(MENU)] key to move to the next space. This method
can also be used to enter a blank space in the name. To
clear the previous letter, press the [H/L(POS)] key.
9. After the eleventh letter or space has been entered, press
and hold the [CALL/SET(MENU)] key to advance to the
GROUP MMSI (Maritime Mobile Service Identity Num-
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GX1256S Page 41
ber) number entry.
10. Press the [UP] or [DOWN] key to scroll through num-
bers, 0-9.
11. To enter the desired number and move one space to
the right press the [CALL/SET(MENU)] key. Repeat pro-
cedure until all nine spaces of MMSI number are en-
tered.
12. If a mistake was made entering in the name or the MMSI
number repeat pressing the [CALL/SET(MENU)] key
until the wrong character is selected, then press the [UP]
or [DOWN] key to correct the entry.
13. To store the data entered, press and hold the [CALL/
SET(MENU)] key.
14. To enter another individual address, repeat steps 4 through 13.
15. To exit this menu and return to radio operation mode press the [16/9]
key.
7.8.1.2 Transmitting a Group Call
1. Select the desired channel to use Group Call for voice
communications.
2. Press the [CALL/SET(MENU)] key.
3. Press the [DOWN] key to select “GROUP.” (To cancel,
select “EXIT” with the [UP] or [DOWN] key or press [16/
9] key.)
4. Press the [CALL/SET(MENU)] key to enable setting this
item.
5. Press the [UP] or [DOWN] key to select the “Group” you
want to contact.
6. Press the [CALL/SET(MENU)] key to transmit the Group
Call signal.
7. When the Group Call signal is sent, the LCD will be as
shown in the illustration at the right.
8. After the GROUP CALL is transmitted, all the radios in
the group will switch to the designated channel.
9. Listen to the channel to make sure it is not busy, then
key the microphone and call the other vessels you de-
sire to communicate with.
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7.8.1.3 Receiving a Group Call
1. When a group call is received, the QUEST+ will produce a ringing alarm
sound.
2. The radio automatically switches to the requested channel.
3. Press any key to stop the alarm.
4. Monitor the channel for the person calling the Group for a message.
5. If you want to respond, monitor the channel to make sure it is clear, then
press the PTT on the mic and talk to the calling ship(s).
NOTE
After a Group call is received, the time the call was made and the ships
MMSI or vessels name will appear on the LCD.
7.8.2 Position Request
Advancements in DSC have made it possible to poll the location of another
vessel and show the position of that vessel on the display of the QUEST+.
Standard Horizon has taken this feature one step further, if any Standard
Horizon GPS is connected to the QUEST+, the polled position of the vessel
is shown on the display of the GPS chart plotter making it easy to navigate
to the location of the polled vessel. This is a great feature for anyone want-
ing to know the position of another vessel. For example you buddy that is
catching fish, or finding the location of a person you are cruising with.
NOTE
The other vessel must have an operating GPS receiver connected to its
DSC transceiver and must not have its transceiver set to deny position
requests. (Refer the section 7.7.1 to enter information into the indi-
vidual directory).
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7.8.2.1 Setting up Position Reply
The QUEST+ can be set up to automatically or manually send your position
to another vessel. This selection is important if you are concerned about
someone polling the position of your vessel that you may not want to. In the
manual mode you will see the MMSI or persons name shown on the display
allowing you to choose to send your position to the requesting vessel.
1. Press and hold down the [CALL/SET(MENU)] key until
“RADIO SETUP” appears.
2. Press the [DOWN] key to select “DSC SETUP.”
3. Press the [CALL/SET(MENU)] key, then press the [UP]
or [DOWN] key to select “POS REPLY.”
4. Press the [CALL/SET(MENU)] key to enable setting this
item.
5. Press the [UP] or [DOWN] key to select “AU (Automatic)”
or “oF (off).” In “AU” mode, after a DSC POS Request is
received, the radio will automatically transmit your ves-
sels position. In “oF” mode, the display of the QUEST+
will show who is requesting the position.
6. Press the [CALL/SET(MENU)] key to store the selected
setting.
7. To exit this menu and return to radio operation mode press
the [16/9] key.
7.8.2.2 Transmitting a Position Request to Another Vessel
NOTE
To transmit a Position Request, you must setup the QUEST+ DSC Indi-
vidual / Position Call Directory with the name of the vessel(s) or person
and the MMSI of the DSC radio you wish to poll. To setup this directory
refer to section 7.7.1 Setting up the Individual / Position Call Directory
1. Press the [CALL/SET(MENU)] key.
2. Press the [DOWN] key to select “POS REQUEST.”
3. Press the [CALL/SET(MENU)] key to show the Individual
Directory.
4. Press the [UP] or [DOWN] to select a name.
5. Press the [CALL/SET(MENU)] key to transmit the posi-
tion request DSC call.
6. After a DSC position request is transmitted, the trans-
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GX1256SPage 44
ceiver remains on channel 70 until position data is re-
ceived from the polled vessel.
7. When the QUEST+ receives the position from the polled
vessel it is shown on the radio display and also trans-
ferred to the GPS Chart plotter.
8. If the QUEST+ does not receive a reply, the LCD will
display “NO REPLY.” Press the [DOWN] key and select
“SEND” to transmit the call again or “EXIT” to exit the
Position Request mode.
NOTE
If the QUEST+ does not receive position data from the polled vessel,
the LCD will show “NO POSITION DATA.”
7.8.2.3 Receiving a Position Request
When a position request call is received from another vessel, a ringing alarm
will sound and POS REQUEST will be show in the LCD. Operation and
transceiver function differs depending on “POS REPLY” in the “DSC SETUP”
menu setting.
Automatically reply:
1. When a position request call is received, a calling alarm sounds 4 times.
Then requested position coordinates are transmitted
automatically to the vessel requesting your vessels po-
sition.
2. To exit from position request display, press any key.
Manually reply:
1. When a position request call is received, “RECEIVED POS REQUEST”
will appear on the LCD, and a calling alarm will sound.
2. Press the any key to disable the calling alarm.
3. Select type of reply function “ABLE” or “EXIT” by using
the [UP] or [DOWN] key.
4. When “ABLE” is selected, press the [CALL/SET(MENU)]
key. And the requested position coordinates will be trans-
mitted.
5. To exit from position request display, press any key.
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GX1256S Page 45
7.8.3 Position Send
The feature is similar to Position Request, however instead of requesting a
position of another vessel this function allows you to send your position to
another vessel. Your vessel must have an operating GPS receiver connected
for the QUEST+ to send the position.
NOTE
To transmit a Position Send Call, you must setup the QUEST+ DSC
Individual / Position Call Directory with the name of the vessel(s) or
person and the MMSI of the DSC radio you wish to send your position
to. To setup this directory refer to section 7.7.1 Setting up the Individual
/ Position Call Directory.
7.8.3.1 Transmitting a DSC Position Send Call
1. Press the [CALL/SET(MENU)] key.
2. Press the [DOWN] key to select the “POS SEND.”
3. Press the [CALL/SET(MENU)] key, then press the [UP]
or [DOWN] key to select a name in the directory.
4. Press the [CALL/SET(MENU)] key to send your posi-
tion to the selected vessel.
7.8.3.2 Receiving a DSC Position Send Call
When another vessel transmits their vessels location to the QUEST+ the
following will happen:
1. A ringing sound will be produced when the call is received.
2. Press the [16/9] key to stop ringing
3. The position from the vessel sending it's position will be shown on the
display of the radio and also transferred to any Standard Horizon GPS
Chart plotter if connected.
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GX1256SPage 46
7.8.4 Receiving a geographical area call
1. When a geographical call is received, “RECEIVED GEO-
GRAPHIC” will appear on the LCD, and an emergency
alarm will be heard (different from DISTRESS). Then
the requested channel from the other ship is automati-
cally selected.
2. Press any key to stop the alarm.
3. Press the UP or DOWN key to select the receiving dis-
tress data:
• MMSI or Station Name
4. Monitor the traffic channel for an announcement from
the calling ship or shore station.
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8. RADIO SETUP MODE
8.1 LAMP ADJUSTING
1. Press and hold down the [CALL/SET(MENU)] key until
“RADIO SETUP” appears.
2. Press the [CALL/SET(MENU)] key to select “LAMP.”
3. Press the [CALL/SET(MENU)] key to enable adjusting
this item (The number in the display will flash).
4. Press the [UP] or [DOWN] key to select the desired level.
3:High
2:Mid
1: Low
0:OFF
5. Press the [CALL/SET(MENU)] key to store the selected
level.
6. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key.
7. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key to return to the normal opera-
tion.
8.2 LCD CONTRAST ADJUSTING
1. Press and hold down the [CALL/SET(MENU)] key until
“RADIO SETUP” appears.
2. Press the [CALL/SET(MENU)] key, then press the
[DOWN] key to select “CONTRAST.”
3. Press the [CALL/SET(MENU)] key to enable adjusting
this item (The number in the display will flash).
4. Press the [UP] or [DOWN] key to adjust the contrast.
Available values are 7 “dark” through 0 “light.”
5. Press the [CALL/SET(MENU)] key to store the selected
level.
6. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key.
7. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key to return to the normal opera-
tion.
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8.3 KEY BEEP (ON or OFF)
1. Press and hold down the [CALL/SET(MENU)] key until
“RADIO SETUP” appears.
2. Press the [CALL/SET(MENU)] key, then press the
[DOWN] key to select “KEY BEEP.”
3. Press the [CALL/SET(MENU)] key to enable adjusting
this item (The number in the display will flash).
4. Press the [UP] or [DOWN] key to select “on” or “oF (off).”
5. Press the [CALL/SET(MENU)] key to store the selected
setting.
6. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key.
7. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key to return to the normal opera-
tion.
8.4 WEATHER ALERT (ON or OFF)
1. Press and hold down the [CALL/SET(MENU)] key until
“RADIO SETUP” appears.
2. Press the [CALL/SET(MENU)] key, then press the
[DOWN] key to select “WX ALT.”
3. Press the [CALL/SET(MENU)] key to enable adjusting
this item (The number in the display will flash).
4. Press the [UP] or [DOWN] key to select “on” or “oF (off).”
5. Press the [CALL/SET(MENU)] key to store the selected
setting.
6. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key.
7. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key to return to the normal opera-
tion.
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8.5 CHANNEL NAME CHANGE
1. Press and hold down the [CALL/SET(MENU)] key until
“RADIO SETUP” appears.
2. Press the [CALL/SET(MENU)] key, then press the
[DOWN] key to select “CH NAME.”
3. Press the [CALL/SET(MENU)] key, then press the [UP]
or [DOWN] key to select the channel on which you wish
to change a name.
4. Press the [CALL/SET(MENU)] key to enable adjusting
this item.
5. Press the [UP] or [DOWN] key to select the first charac-
ter (letter, number, or symbol) in the name you wish to
store, the press the [CALL/SET(MENU)] key to move to
the next character.
6. If you make a mistake, press the [H/L(POS)] key to move
back, then re-select the correct letter, number, or sym-
bol.
7. Repeat step 5 as many times as necessary to complete
the name tag (up to 12 characters).
8. Press and hold the [CALL/SET(MENU)] key to store the
new name.
9. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key.
10. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key to return to the normal opera-
tion.
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8.6 TIME OFFSET
Sets the time difference between local time and UTC (Universal Time Coor-
dinated or GMT Greenwich Mean Time). Time is displayed if the QUEST+ is
connected to a GPS receiver.
1. Press and hold down the [CALL/SET(MENU)] key until
“RADIO SETUP” appears.
2. Press the [CALL/SET(MENU)] key, then press the
[DOWN] key to select “TIME.”
3. Press the [CALL/SET(MENU)] key to enable adjusting
this item (The number in the display will flash).
4. Press the [UP] or [DOWN] key to select “Time Offset”
from UTC. Be sure that when selecting the offset that
the display shows “TIME –” for negative offset, or
“TIME +” for a positive offset. Refer to Offset Time Table.
See illustration below to find your offset time from UTC.
If 0:0 is assigned, the time is the same as UTC.
6. Press the [CALL/SET(MENU)] key to store the time off-
set.
7. Press the [DOWN] key to select “EXIT,” then press the
[CALL/SET(MENU)] key.
8. Press the [DOWN] key to select “EXIT,” then press the [CALL/
SET(MENU)] key to return to the normal operation.
NOTE
During Daylight Saving time subtract 1 hour from the offset shown above
and enter this offset in step 4 above.
OFFSET TIME TABLE
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9 RAM+ MIC OPERATION
If the enhanced optional RAM+ Mic (CMP25) is connected to the remote
microphone connector on the transceiver’s rear panel, the transceiver can
use the remote control operation except for a few functions. The RAM+ Mic
supplied with 23 feet (7 m) of routing cable and can be extended up to 70
feet (21 m) using three 23 feet extension cables model CT-100. The inter-
com operation can be used between the RAM+ Mic and the transceiver.
9.1 RAM+ MIC CONTROLS
SQUELCH CONTROL (SQL)
Activates the squelch adjusting mode.
Press this key to activate the squelch adjusting mode. Press the
microphone’s [] or [] key to adjust the squelch.
When [] key is pressed and held down for 1 second or more, the squelch
is turned off.
SCAN DW
NAV
WX
CALL
SET
MEM IC
U.I.C
MENU
16
9
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VOLUME KEY (VOL)
Activates the volume adjusting mode.
Press this key to activate the volume adjusting mode. Press the
microphone’s [] or [] to adjust the volume.
POWER SWITCH (PWR)
Press and hold down this key to turn to the transceiver and RAM+ Mic on
and off.
PTT (Push-To-Talk) SWITCH
Activates transmission.
[H/L] KEY
Toggles between high and low power. When the [H/L] key is pressed
while the transceiver is on channel 13 or 67, the power will temporarily
switch from LO to HI power until the PTT is released. The [H/L] key does
not function on transmit inhibited and low power only channels.
[](UP)/[](DOWN) KEY
These keys are used to select channels, adjusts the volume and squelch
level, and to choose the item selection of different functions (such as the
DSC operation). In many ways, these keys emulate the function of the
transceiver’s CHANNEL selector knob.
[16/9] KEY
Immediately recalls channel 16 from any channel location. Holding down
this key recalls channel 9. Pressing the [16/9] key reverts to the previous
selected working channel.
Secondary use
Please see secondary use for the [WX] and [MEM] key.
KEY PAD
[SCAN] Key
1. Starts and stops scanning of programmed channels.
2. If held while the [UP()] or [DOWN()] key on the microphone are
pressed, the radio will show the channels programmed in scan
memory. This function will not work if the unit is scanning.
NOTE: The priority channel is channel 16 only.
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[CALL/SET] Key
The [CALL/SET] key functions as the enter key.
Secondary use
Press the [CALL/SET] key to access the DSC OPERATION menu.
Press and hold the [CALL/SET] key to access the SETUP menu.
[DW] Key
Watches for a transmission on CH16 and another selected channel until
either signal is received. (Dual watch)
NOTE: When the DSC SCANNING feature is enabled (see section 7.15
DSC SCAN), the radio watches for a transmission on CH16, another
selected channel, and CH70 until either signal is received (Triple watch).
Secondary use
Press and hold [DW] key, intercom operation will operate between radio
and RAM Mic.
[NAV] Key
Press and hold this key, when connected to the GPS receiver, the LCD
displays Position Data from the GPS.
[WX] Key
Immediately recalls the previously selected NOAA weather channel from
any channel location.
Secondary use
Holding down the [16/9] key while pressing the [WX] key changes the
mode from USA to International or Canadian.
NOTE: If position is displayed, this icon will be hidden.
[DISTRESS] KEY
Used to send a DSC Distress Call. To send the distress call:
1. Lift the red rubber cover.
2. Press and hold the Red button. The RAM+ display will
count down (3-2-1) and then transmit the Distress call.
3. When the distress signal is sent, Ch70 and “TX” icon
will appear on the LCD. After the message has been
sent, the radio will sound a Distress Alarm.
4. The transceiver “shadow-watches” for a transmission
on CH16 or CH70 until an acknowledgment signal is
received. “DISTRESS” and “WAITING” will appear on
the LCD.
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5. If an acknowledgement is received, select channel 16
and advise your distress situation.
6. If no acknowledgment is received, the distress call is
repeated in 4 minute intervals until an acknowledg-
ment is received.
7. When a DSC Distress acknowledgment is received, a distress alarm
sounds and channel 16 is automatically selected. The LCD shows
the MMSI of the ship responding to your distress.
RECEIVED ACK: acknowledgment signal is received.
RECEIVED RLY: relay signal is received from another vessel or coast
station.
8. To cancel the DSC distress alarm signal from the speaker, press any
key.
9.2 INTERCOM OPERATION
9.2.1 Communication
1. Press and hold the [DW] key while in the “RADIO” mode, the mode is
changed to “INTERCOM” mode. If the [DW] key pressed and held again
the QUEST+ will revert to “RADIO” mode.
2. When the “INTERCOM” operation is activated, “IC” is dis-
played on the LCD.
3. Press the PTT switch. The “TALK” is displayed.
NOTE: A warning beep is emitted when the RAM+ Mic
PTT switch is pressed while the transceiver microphone’s
PTT switch is pressed.
4. Speak slowly and clearly into the microphone, hold the
microphone about 1/2 inch away from your mouth.
5. When finished, release the PTT switch.
9.2.2 Calling
Hold down the [DW] key for 1 second or more, when the “INTERCOM” op-
eration is activated. A calling beep is emitted twice from the transceiver
speaker.
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9.3 DSC/RADIO SETUP MODE
The CMP25 can access the DSC / RADIO setup menu (refer to section 7
“DIGITAL SELECTIVE CALLING” and section 8 “RADIO SETUP MODE” for
details). However, the LAMP, CONTRAST, and KEY BEEP menu item which
is accessed from the CMP25 only controls the CMP25’s display and speaker.
DSC/RADIO Setup mode from the CMP25:
1. Press and hold down the [CALL/SET] key until “RADIO SETUP” menu
appears.
2. Press the []/[] key to select “RADIO SET” or “DSC SETUP” menu.
3. Press the [CALL/SET] key, then select the menu item you wish to work
on by pressing the []/[] key.
4. Press the [CALL/SET] key.
5. Press the []/[] key to change the value or condition for the menu
item, then press the [CALL/SET] key to save the new setting.
6. Press the []/[] key to select “EXIT,” then press the [CALL/SET] key
to return to the normal operation.
RADIO SETUP-menu DSC SETUP-menu
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GX1256SPage 56
10 MAINTENANCE
The inherent quality of the solid-state components used in this transceiver
will provide many years of continuous use. Taking the following precautions
will prevent damage to the transceiver.
• Keep the microphone connected or the jack covered at all times to pre-
vent corrosion of electrical contacts;
• Never key the microphone unless an antenna or suitable dummy load is
connected to the transceiver.
• Ensure that the supply voltage to the transceiver does not exceed 16
VDC or fall below 11 VDC.
• Use only STANDARD HORIZON-approved accessories and replacement
parts.
In the unlikely event of serious problems, please contact your Dealer or our
repair facility. Address and phone numbers for this facility, as well as war-
ranty information, are contained in section 11 WARRANTY.
10.1 REPLACEMENT PARTS
Occasionally an owner needs a replacement mounting bracket or knob.
These can be ordered from our Parts Department by writing or calling:
Marine Division of Vertex Standard
US Headquarters
10900 Walker Street, Cypress, CA 90630, U.S.A.
Telephone (714) 827-7600
Commonly requested parts, and their part numbers are listed below.
•Power Cord: T9023306
•Dust Cover: RA0437900
•VOL/SQL Knob Assy: RA0422200
•Mounting Braket (White): RA0448900
•Mounting Braket (Black): RA0459200
•Mounting Braket Knob (White): RA043770A
•Mounting Braket Knob (Black): RA045910A
•Microphone Hanger (White): RA0436000
•Microphone Hanger (Black): RA0458800
•RAM+ Routing Cable: S8101512
•RAM+ Panel Mount Cap: RA0525200
•RAM+ Rubber DSC Distress Cover: RA0523200
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GX1256S Page 57
10.2 FACTORY SERVICE
In the unlikely event that the radio fails to perform or needs servicing, please
contact your Dealer or Marine Division of Vertex Standard.
An “RA” Return Authorization number is not necessary to send a product in
for service. Include a brief note describing the problem along with your name,
return address, phone number, and proof of purchase.
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GX1256SPage 58
10.3 TROUBLESHOOTING CHART
PROBABLE CAUSE
No DC voltage to the
transceiver, or blown
fuse.
Reversed power
wires.
Engine noise.
External cable.
Antenna.
The power supply volt-
age is too high or too
low.
External cable.
Setting of the GPS
navigation receiver.
REMEDY
a. Check the 12 VDC battery con-
nections and the fuse.
b. The VOL/PWR knob needs to be
pressed and held to turn the ra-
dio on.
Check the power cable for DC volt-
age, or replace the fuse (6A 250V).
Make sure the red wire is con-
nected to the positive (+) battery
post, and the black wire is con-
nected to the negative (-) battery
post. If the fuse still blows, con-
tact your Dealer.
Reroute the DC power cables
away from the engine. Add noise
suppressor on power cable.
Change to resistive spark plug
wires and/or add an alternator
whine filter.
Check the polarity of the con-
nected external cable.
Have the antenna checked or test
the transceiver with another an-
tenna. If the problem persists, con-
tact your Dealer for servicing.
Confirm that the connected power
supply voltage is not 17 volts or
lower than 10 volts. Confirm that
the generator has not malfunc-
tioned.
Check the polarity of the con-
nected external cable.
Some GPS use the battery ground
line for NMEA connection.
Check the output signal format of
the GPS navigation receiver. This
radio requires NMEA0183 format
with GLL sentence as an output
signal. If the GPS has a baud rate
setting make sure to select 4800
and parity to NONE.
TROBLESHOOTING CHART
SYMPTOM
Transceiver fails to
power up.
Transceiver blows
fuse when connected
to power supply.
Popping or whining
noise from the
speaker while engine
runs.
Sound is not emitted
from the external
speaker.
Receiving station re-
port low transmit
power, even with
transceiver set to HI
power.
“HI BATTERY” or
“LOW BATTERY”
message is scrolled
when the power is
turned on.
Your position is not
displayed.
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GX1256S Page 59
11. CHANNEL ASSIGNMENTS
Tables on the following columns list the VHF Marine Channel assignments
for U.S.A. and International use. Below are listed some data about the charts.
1. VTS. Where indicated, these channels are part of the U.S. Coast Guard’s
Vessel Traffic System.
2. Alpha channel numbers, that is, channel numbers followed by the letter
A (such as Channel 07A) are simplex channels on the U.S.A. or Cana-
dian channel assignments whose counterparts in the International as-
signments are duplex channels. International channels do not use “al-
pha” numbers. If you call the Coast Guard on Channel 16, they will some-
times ask you to “go to channel 22 Alpha.” This is a channel assigned
to U.S.A, and Canadian Coast Guards for handling distress and other
calls. If your radio is set for International operation you will go to Chan-
nel 22 instead of 22A, and will not be able to communicate with the
Coast Guard. To use Channel 22A, your radio must be set for USA or
Canada operation, usually by a U/I/C (USA/International/Canada) con-
trol or combination of controls. Channel 22 (without an “A”) is an Inter-
national duplex channel for port operations. Some radios indicate an
“A” adjacent to the alpha channels on the display; on others “alpha” is
not indicated but the proper channel is selected based on the U/I/C set-
ting.
3. Bridge-to-Bridge channels (for example, Channel 13) are for use by bridge
operators on intercoastal waterways and rivers. It is also used by marine
vessels in the vicinity of these bridges for navigation and for communi-
cating with the bridge operators. Note that a limit of 1 Watt is specified
for these channels. See page 25 for additional information.
4. The S/D column on the chart indicates either S (simplex) or D (duplex).
Simplex means transmitting and receiving on the same frequency. Only
one party at a time can talk, unlike a telephone. Be sure to say “over”
and release your microphone push-to-talk switch at the end of each trans-
mission. Duplex operation involves the use of one frequency for trans-
mitting and a separate frequency for receiving. On channels specified
as duplex on the charts, correct mode of operation is established auto-
matically by your radio when you select a channel; you cannot change
the mode. And you still must release the push-to-talk switch after each
transmission in order to listen to the radio.
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GX1256SPage 60
5. Channels normally used by recreational boaters are those that include
the term “non-commercial” in the Channel Use column of the chart. Some
of these are shared with other users and some are used only in certain
geographic regions.
6. Marine vessels equipped with VHF radios are required to monitor
Channel 16.
VHF MARINE CHANNEL CHART
CH U C I S/D TX RX CHANNEL USE
01 X X D 156.050 160.650 Public Correspondence (Marine Operator)
01A X S 156.050 Port Operation and Commercial. VTS in selected areas
02 X X D 156.100 160.700 Public Correspondence (Marine Operator)
03 X X D 156.150 160.750 Public Correspondence (Marine Operator)
03A X S 156.150 US Government only, Coast Guard
04 X D 156.200 160.800 Public Correspondence (Marine Operator),
Port operation, ship movement
04A X S 156.200 Pacific coast: Coast Guard, East Coast:
Commercial fishing
05 X D 156.250 160.850 Public Correspondence (Marine Operator),
Port operation, ship movement
05A X X S 156.250 Port operation. VTS in Seattle
06 X X X S 156.300 Inter-ship Sefety
07 X D 156.350 160.950 Public Correspondence (Marine Operator),
Port operation, ship movement
07A X X S 156.350 Commercial
08 X X X S 156.400 Commercial (Inter-ship only)
09 X X X S 156.450 Boater Calling channel, Commercial & Non-commercial
(Recreational)
10 X X X S 156.500 Commercial
11 X X X S 156.550 Commercial. VTS in selected areas.
12 X X X S 156.600 Port operation. VTS in selected areas.
13 X X X S 156.650 Inter-ship Navigation Safety (Bridge-to-bridge)
14 X X X S 156.700 Port operation. VTS in selected areas.
15 X S - - - 156.750 Environmental (Receive only)
15 X X S 156.750 Commercial, non-commercial, ship movement (1 W)
16 X X X S 156.800 International Distress, Safety and Calling
17 X X X S 156.850 State Controlled (1 W)
18 X D 156.900 161.500 Port operation, ship movement
18A X X S 156.900 Commercial
19 X D 156.950 161.550 Port operation, ship movement
19A X S 156.950 US: Commercial
19A X S 156.950 Coast Guard
20 X X X D 157.000 161.600 Canadian Coast Guard Only,
International: port operations and shipment
20A X S 157.000 Port operation
21 X D 157.050 161.650 Port operation, ship movement
21A X X S 157.050 U.S. Government Only, Canadian Coast Guard
22 X D 157.100 161.700 Port operation, ship movement
22A X X S 157.100 US and Canadian Coast Guard Liaison and Maritime
Safety Information Broadcasts announced on channel 16
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GX1256S Page 61
VHF MARINE CHANNEL CHART
CH U C I S/D TX RX CHANNEL USE
23 X X D 157.150 161.750 Public Correspondence (Marine Operator)
23A X S 157.150 U.S. Government Only
24 X X X D 157.200 161.800 Public Correspondence (Marine Operator)
25 X X X D 157.250 161.850 Public Correspondence (Marine Operator)
26 X X X D 157.300 161.900 Public Correspondence (Marine Operator)
27 X X X D 157.350 161.950 Public Correspondence (Marine Operator)
28 X X X D 157.400 162.000 Public Correspondence (Marine Operator)
60 X X D 156.025 160.625 Public Correspondence (Marine Operator)
61 X D 156.075 160.675 Public Correspondence (Marine Operator),
Port operation, ship movement
61A X X S 156.075 U.S. Government Only, Canadian Coast Guard-
Pacific Coast, Commercial Fishing-East Coast
62 X D 156.125 160.725 Public Correspondence (Marine Operator),
Port operation, ship movement
62A X S 156.125 Public Coast: Coast Guard;
East Coast: commercial fishing only
63 X D 156.175 160.775 Public Correspondence (Marine Operator),
Port operation, ship movement
63A X S 156.175 Port Operation and Commercial. VTS in selected areas.
64 X X D 156.225 160.825 Public Correspondence (Marine Operator),
Port operation, ship movement
64A X X S 156.225 U.S. Government Only, Canadian Commercial Fishing
65 X D 156.275 160.875 Public Correspondence (Marine Operator),
Port operation, ship movement
65A X X S 156.275 Port Opeations
66 X D 156.325 160.925 Public Correspondence (Marine Operator),
Port operation, ship movement
66A X X S 156.325 Port Operations
67 X X X S 156.375 US: Commercial. Used for Bridge-to-bridge communi-
cations in lower Mississippi River. Inter-ship only,
Canada: Commercial fishing, S&R
68 X X X S 156.425 Non-commercial (Recreational)
69 X X X S 156.475 US: Non-commercial (Recreational),
Canada: Commercial fishing only,
International: Inter-ship, Port opertions and Ship movement
70 X X X S 156.525 Digital selective calling (voice communications not allowed)
71 X X X S 156.575 US, Canada: Non-commercial (Recreational),
International: Port opertions and Ship movement
72 X X X S 156.625 Non-commercial (Inter-ship only)
73 X X X S 156.675 US: Port Operations, Canada: Commercial fishing only,
International: Inter-ship, Port opertions and Ship movement
74 X X X S 156.725 US: Port Operations, Canada: Commercial fishing only,
International: Inter-ship, Port opertions and Ship movement
75 X S 156.775 Port Operations (Inter-ship only) (1W)
76 X S 156.825 Port Operations (Inter-ship only) (1W)
77 X X S 156.875 Port Operations (Inter-ship only) (1W)
77 X S 156.875 Port Operations (Inter-ship only)
78 X D 156.925 161.525 Public Correspondence (Marine Operator),
Port operation, ship-movement
78A X X S 156.925 Non-commercial (Recreational)
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GX1256SPage 62
VHF MARINE CHANNEL CHART
CH U C I S/D TX RX CHANNEL USE
79 X D 156.975 161.575 Port operation and Ship movement
79A X X S 156.975 Commercial
80 X D 157.025 161.625 Port operation, ship movement
80A X X S 157.025 Commercial
81 X D 157.075 161.675 Port operation, ship movement
81A X X S 157.075 U.S. Government Only -
Environmental protection operations.
82 X D 157.125 161.725 Public Correspondence (Marine Operator),
Port operation, ship movement
82A X X S 157.125 U.S. Government Only, Canadian Coast Guard Only
83 X X D 157.175 161.775 Canadian Coast Guard Only
83A X X S 157.175 U.S. Government Only, Canadian Coast Guard Only
83 X X D 157.175 161.775 Public Correspondence (Marine Operator)
84 X X X D 157.225 161.825 Public Correspondence (Marine Operator)
85 X X X D 157.275 161.875 Public Correspondence (Marine Operator)
86 X X X D 157.325 161.925 Public Correspondence (Marine Operator)
87 X X X D 157.375 161.975 Public Correspondence (Marine Operator)
88 X X X D 157.425 162.025 Public Correspondence (ship-to-coast)
88A X S 157.425 Commercial, Inter-ship Only
WX01
X X X D - - - 162.550 Weather (receive only)
WX02
X X X D - - - 162.400 Weather (receive only)
WX03
X X X D - - - 162.475 Weather (receive only)
WX04
X X X D - - - 162.425 Weather (receive only)
WX05
X X X D - - - 162.450 Weather (receive only)
WX06
X X X D - - - 162.500 Weather (receive only)
WX07
X X X D - - - 162.525 Weather (receive only)
WX08
X X X D - - - 161.650 Weather (receive only)
WX09
X X X D - - - 161.775 Weather (receive only)
WX10
X X X D - - - 163.275 Weather (receive only)
The above BOLD channels are not for use of the general public in U.S. waters, unless proper
authorization is given.
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GX1256S Page 63
Port Operations
01A1156.050 156.050
63A1156.175 156.175
052156.250 156.250
65A 156.275 156.275
66A 156.325 156.325
123156.600 156.600
73 156.675 156.675
143156.700 156.700
74 156.725 156.725
774156.875 Intership only.
20A12 157.000 Intership only.
Navigational (Bridge-to-Bridge)5
136156.650 156.650
677156.375 156.375
Commercial
01A1156.050 156.050
63A1156.175 156.175
07A 156.350 156.350
677156.375 Intership only.
08 156.400 ........ Do.
09 156.450 156.450
10 156.500 156.500
113156.550 156.550
18A 156.900 156.900
19A 156.950 156.950
79A 156.975 156.975
80A 157.025 157.025
88A8157.425 ........ Intership only.
7214 156.625 ........ Internship only.
Digital Selective Calling
7015 156.525 156.525
Noncommercial
6817 156.425 156.425
0916 156.450 156.450
69 156.475 156.475
71 156.575 156.575
72 156.625 ........ Intership only.
78A 156.925 156.925
79A 156.975 156.975 Great Lakes only.
80A 157.025 157.025 Do.
6714 156.375 ....... Internship only.
Distress, Safety and Calling
16 156.800 156.800 EPRIB
Intership Safety
06 156.300 ........ a. Intership, or b.
For SAR: Ship and
aircraft for the U.S.
Coast Guard.
Environmental
1513 ........ 156.750 Coast to ship only.
Maritime Control
179,10 156.850 156.850
Liaison, U.S. Coast Guard
22A11 157.100 157.100 Ship, aircraft, and
coast stations of
the U.S. Coast
Guard and at Lake
Mead, Nev., ship
and coast stations
of the National
Park Service, U.S.
Department of the
Interior.
Ship
transmit
Channel
designator
Carrier frequency
(MHz)
Points of communica-
tion (Intership and be-
tween coast and ship
unless otherwise indi-
cated)
Coast
transmit
Ship
transmit
Channel
designator
Carrier frequency
(MHz)
Points of communica-
tion (Intership and be-
tween coast and ship
unless otherwise indi-
cated)
Coast
transmit
1: 156.050 MHz and 156.175 MHz are available for port operations and commercial communications
purposes when used only within the U.S. Coast Guard designated Vessel Traffic Services (VTS)
area of New Orleans, on the lower Mississippi River from the various pass entrances in the Gulf of
Mexico to Devil’s Swamp Light at River Mile 242.4 above head of passes near Baton Rouge.
2: 156.250 MHz is available for port operations communications use only within the U.S. Coast Guard
designated VTS radio protection areas of New Orleans and Houston described in Sec. 80.383.
156.250 MHz is available for intership port operations communications used only within the area of
Los Angeles and Long Beach harbors, within a 25- nautical mile radius of Point Fermin, California.
3: 156.550 MHz, 156.600 MHz and 156.700 MHz are available in the U.S. Coast Guard designated
port areas only for VTS communications and in the Great Lakes available primarily for communica-
tions relating to the movement of ships in sectors designated by the St. Lawrence Seaway Develop-
ment Corporation or the U.S. Coast Guard. The use of these frequencies outside VTS and ship
movement sector protected areas is permitted provided they cause no interference to VTS and ship
movement communications in thier respective designated sectors.
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GX1256SPage 64
4: Use of 156.875 MHz is limited to communications with pilots regarding the movement and docking
of ships. Normal output power must not exceed 1 watt.
5: 156.375 MHz and 156.650 MHz are available primarily for intership navigational communications.
These frequencies are available between coast and ship on a secondary basis when used on or in
the vicinity of locks or drawbridges. Normal output power must not exceed 1 watt. Maximum output
power must not exceed 10 watts for coast stations or 25 watts for ship stations.
6: On the Great Lakes, in addition to bridge-to-bridge communications, 156.650 MHz is available for
vessel control purposes in established vessel traffic systems. 156.650 MHz is not available for use in
the Mississippi River from South Pass Lighted Whistle Buoy “2” and Southwest Pass entrance
Midchannel Lighted Whistle Buoy to mile 242.4 above Head of Passes near Baton Rouge. Addition-
ally it is not available for use in the Mississippi River-Gulf Outlet, the Mississippi River-Gulf Outlet
Canal, and the Inner Harbor Navigational Canal, except to aid the transition from these areas.
7: Use of 156.375 MHz is available for navigational communications only in the Mississippi River from
South Pass Lighted Whistle Buoy “2” and Southwest Pass entrance Mid-channel Lighted Whistle
Buoy to mile 242.4 above head of Passes near Baton Rouge, and in addition over the full length of
the Mississippi River-Gulf Outlet Canal from entrance to its junction with the Inner Harbor Navigation
Canal, and over the ull length of the Inner Harbor Navigation Canal from its junction with the Missis-
sippi River to its entry to Lake Pontchartrain at the New Seabrook vehicular bridge.
8: Within 120 km (75 miles) of the United States/Canada border, in the area of the Puget Sound and
the Strait of Juan de Fuca and its approaches, 157.425 MHz is half of the duplex pair designated as
Channel 88. In this area, Channel 88 is available to ship stations for communications with public
coast stations only. More than 120 km (75 miles) from the United States/Canada border in the area
of the Puget Sound and the Strait of Juan de Fuca, its approaches, the Great Lakes, and the St.
Lawrence Seaway, 157.425 MHz is available for intership and commercial communications. Outside
Puget Sound area and its approaches and the Great Lakes, 157.425 MHz is also available for
communications between commercial fishing vessels and associated aircraft while engaged in com-
mercial fishing activities.
9: When the frequency 156.850 MHz is authorized, it may be used additionally for search and rescue
training exercises conducted by state or local governments.
10: The frequency 156.850 MHz is additionally available to coast stations on the Great Lakes for trans-
mission of scheduled Coded Marine Weather Forecasts (MAFOR), Great Lakes Weather Broadcast
(LAWEB) and nscheduled Notices to Mariners or Bulletins. F3C and J3C emissions are permitted.
Coast Stations on the Great Lakes must cease weather broadcasts which cause interference to
stations operating on 156.800 MHz until the interference problem is resolved.
11: The frequency 157.100 MHz is authorized for search and rescuetraining exercises by state or local
government in conjunction with U.S. Coast Guard stations. Prior U.S. Coast Guard approval is re-
quired. Use must cease immediately on U.S. Coast Guard request.
12: The duplex pair for channel 20 (157.000/161.600 MHz) may be used for ship to coast station com-
munications.
13: Available for assignment to coast stations, the use of which is in accord with an agreed program, for
the broadcast of information to ship stations concerning the environmental conditions in which ves-
sels operate, i.e., weather; sea conditions; time signals; notices to mariners; and hazards to naviga-
tion.
14: Available only in the Puget Sound and the Strait of Juan de Fuca.
15: The frequency 156.525 MHz is to be used exclusively for distress, safety and calling using digital
selective calling techniques. No other uses are permitted.
16: The frequency 156.450 MHz is available for intership, ship and coast general purpose calling by
noncommercial vessels, such as recreational boats and private coast stations.
17: The frequency 156.425 MHz is assigned by rule to private coast stations in Alaska for facsimile
transmissions as well as voice communications.
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GX1256S Page 65
12. WARRANTY
Marine Products Limited Warranty
STANDARD HORIZON (a division of VERTEX STANDARD) warrants, to the
original purchaser only, each new Marine Communications Product (“Prod-
uct”) manufactured and/or supplied by STANDARD HORIZON against de-
fects in materials and workmanship under normal use and service for a
period of time from the date of purchase as follows:
Fixed Mount and Portable Transceivers
1 year - if purchased before 01/01/91
3 years - if purchased between 01/01/91 and 01/01/94
3 years Waterproof - if purchased after 01/01/94
Loud hailers
1 year - if purchased before 01/01/91
3 years - if purchased after 01/01/91
Associated Chargers
1 year - if purchased before 01/01/91
3 years - if purchased after 01/01/91
Associated Batteries - 18 months. Note: Batteries will be deemed deflec-
tive only if storage capacity drops below 80% of rated capacity or if leakage
develops.
Associated Accessories - 1 year. Includes: Microphones/Handsets, Exter-
nal Speakers, Antennas, Carrying Accessories, Power Supplies, and Sig-
naling Boards.
To receive warranty service, the purchaser must deliver the Product, trans-
portation and insurance prepaid, to STANDARD HORIZON (a division of
VERTEX STANDARD). Include proof of purchase indicating model. serial
number, and date of purchase. STANDARD HORIZON will return the Prod-
uct to the purchaser freight prepaid. Products purchased prior to January 1,
1991 will bear the STANDARD HORIZON warranty terms in effect prior to
that date.
In the event of a defect, malfunction or failure of the Product during the
warranty period, STANDARD HORIZON’s liability for any breach of contract
or any breach of express or implied warranties in connection with the sale of
Products shall be limited solely to repair or replacement, at its option, of the
Product or part(s) therein which, upon examination by STANDARD HORI-
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GX1256SPage 66
ZON, appear to be defective or not up to factory specifications. STANDARD
HORIZON may, at its option, repair or replace parts or subassemblies with
new or reconditioned parts and subassemblies. Parts thus repaired or re-
placed are warranted for the balance of the original applicable warranty.
STANDARD HORIZON will not warrant installation, maintenance or service
of the Products. In all instances, STANDARD HORIZON’s liability for dam-
ages shall not exceed the purchase price of the defective Product.
This warranty only extends to Products sold within the 50 States of the United
States of America and the District of Columbia.
STANDARD HORIZON will pay all labor to repair the product and replace-
ment parts charges incurred in providing the warranty service except where
purchaser abuse or other qualifying exceptions exist. The purchaser must
pay any transportation expenses incurred in returning the Product to STAN-
DARD HORIZON for service.
This limited warranty does not extend to any Product which has been sub-
jected to misuse, neglect, accident, incorrect wiring by anyone other than
STANDARD HORIZON, improper installation, or subjected to use in viola-
tion of instructions furnished by STANDARD HORIZON, nor does this war-
ranty extend to Products on which the serial number has been removed,
defaced, or changed. STANDARD HORIZON cannot be responsible in any
way for ancillary equipment not furnished by STANDARD HORIZON which
is attached to or used in connection with STANDARD HORIZON’s Products,
or for the operation of the Product with any ancillary equipment, and all such
equipment is expressly excluded from this warranty. STANDARD HORIZON
disclaims liability for range, coverage, or operation of the Product and ancil-
lary equipment as a whole under this warranty. STANDARD HORIZON re-
serves the right to make changes or improvements in Products, during sub-
sequent production, without incurring the obligation to install such changes
or improvements on previously manufactured Products.
The implied warranties which the law imposes on the sale of this Product
are expressly LIMITED, in duration, to the time period specified above. STAN-
DARD HORIZON shall not be liable under any circumstances for conse-
quential damages resulting from the use and operation of this Product, or
from the breach of this LIMITED WARRANTY, any implied warranties, or
any contract with STANDARD HORIZON. IN CONNECTION WITH THE
SALE OF ITS PRODUCTS, STANDARD HORIZON MAKES NO WARRAN-
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GX1256S Page 67
TIES, EXPRESS OR IMPLIED AS TO THE MERCHANTABILITY OR FIT-
NESS FOR A PARTICULAR PURPOSE OR OTHERWISE, EXCEPT AS
EXPRESSLY SET FORTH HEREIN.
Some states do not allow the exclusion or limitation of incidental or conse-
quential damages, or limitation on how long an implied warranty lasts, so
the above limitations or exclusions may not apply. This warranty gives spe-
cific legal rights, and there may be other rights which may vary from state to
state.
ONLY PRODUCTS SOLD ON OR AFTER JANUARY 1, 1991 ARE COV-
ERED UNDER THE TERMS OF THIS LIMITED WARRANTY.
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GX1256SPage 68
ON-LINE WARRANTY REGISTRATION
THANK YOU for buying STANDARD HORIZON (a division of Vertex
Standard) products! We are confident your new radio will serve your
needs for many years!
Please visit www.standardhorizon.com to register the QUEST Ma-
rine 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. Also a statement
regarding product support should be added to the manual.
Product Support Inquiries
If you have any questions or comments regarding the use of the
QUEST+, you can visit the STANDARD HORIZON Web site to send
an E-Mail or contact the Product Support team at (714) 827-7600 ext
6300 M-F 7:00-5:00PST.
In addition to the warranty, STANDARD HORIZON includes a life-
time “flat rate” program to provide service after the warranty period
has expired. If you wish to obtain the flat rate price for out-of-war-
ranty repair, you must include the information on the Owner’s Record
with the unit when you return it to your Dealer or to STANDARD
HORIZON.
Lifetime Flat Rate Service Program: For the original Owner only, for
the lifetime of the unit, STANDARD HORIZON will repair the unit to
original specifications.
Note: The flat rate amount is payable by the Owner only if STAN-
DARD HORIZON or the STANDARD HORIZON Dealer determines
that a repair is needed. After the repair, a 90-day warranty will be in
effect from the date of return of the unit to the Owner.
This service program is not available for equipment which has failed
as a result of neglect, accident, breakage, misuse, improper installa-
tion or modification, or water damage (depending on the product).
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GX1256S Page 69
13 SPECIFICATIONS
Performance specifications are nominal, unless otherwise indicated, and
are subject to change without notice.
13.1 GENERAL
Channels ............................................ All USA, International and Canadian
Input Voltage........................................................................ 13.8 VDC ±20%
Current Drain
Standby ............................................................................................ 0.5 A
Receive ............................................................................................ 1.5 A
Transmit ................................................................... 5.0 A (Hi); 1.5 A (Lo)
Dimensions ................................................ 2-1/2” H x 6-5/16” W x 6-5/16” D
(64 H x 160 W x 160 D mm)
Flush-Mount Dimensions .................................. 2” H x 5-5/16” W x 5-1/8” D
(50 H x 136 W x 130 D mm)
Weight ...................................................................................... 2.2 lbs (1 kg)
13.2 TRANSMITTER
Frequency Range .................................................. 156.025 to 157.425 MHz
RF Output ...................................................................... 25 W (Hi); 1 W (Lo)
Conducted Spurious Emissions ................................. 80 dB (Hi); 60 dB (Lo)
Audio Response .............................................. within +1/-3 of a 6 dB/octave
pre-emphasis characteristic at 300 to 3000 Hz
Audio Distortion ....................................................................................... 5 %
Modulation ..................................................... 16K0G3E, for DSC 16K0G2B
Frequency Stability (-20°C to +50°C) ........................................... ±0.0005%
FM Hum and Noise .............................................................................. 50 dB
13.3 RECEIVER
Frequency Range .................................................. 156.050 to 163.275 MHz
Sensitivity
20 dB Quieting ............................................................................. 0.35 µV
12 dB SINAD ............................................................................... 0.25 µV
Squelch Sensitivity (Threshold) .................................................. 0.13 µV
Modulation Acceptance Bandwidth ................................................. ±7.5 kHz
Selectivity
Spurious and Image Rejection ...................................................... -70 dB
Intermodulation and Rejection at 12 dB SINAD ........................... -70 dB
Audio Output............................................................................................ 4 W
Audio Response ............................................ within + 2/–8 of a 6 dB/octave
de-emphasis characteristic at 300 to 3000 Hz
Frequency Stability (-20°C to +50°C) .......................................... ±0.0005 %
Channel Spacing ................................................................................ 25 kHz
DSC Format .............................................................................. RTCMSC101
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GX1256SPage 70
MEMO
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GX1256S Page 71
MEMO
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GX1256SPage 72
Marine Division of VERTEX STANDARD
US Headquarters
10900 Walker Street, Cypress, CA 90630, U.S.A.
www. standardhorizon.com
Copyright 2004
VERTEX STANDARD CO., LTD.
All rights reserved.
No portion of this manual
may be reproduced
without the permission of
VERTEX STANDARD CO., LTD.
0401b-0Y
EM005N100