Standard Horizon Marine Tranciever Quantum GX35000S Operating Instructions

							Page 71 GX3500S
[
DW]
 Key
Watches for a transmission on CH16 and another selected channel until
either signal is received. (Dual watch)
Secondary use
Press and hold [
DW]
 key, intercom operation will operate between radio
and RAM+ Mic.
[
NAV]
 Key
Press this key, when connected to the GPS receiver, the LCD displays
Position Data and Time from the GPS.
Secondary use
Press and hold [
NAV]
 key to access PA/FOG function menu.
[
WX]
 Key
Immediately recalls the previously selected US NOAA weather channel from
any channel location.
Secondary use
Holding down the [
16/9]
 key while pressing the [
WX]
 key switch the Chan-
nel Group.
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 “
” icon will appear on
the LCD. After the message has been sent, the radio and RAM+ will
sound a Distress Alarm.
4. The transceiver “shadow-watches” for a transmission on
CH16 or CH70 until an acknowledgment signal is re-
ceived. “
DISTRESS” and “WAITING” will appear on the
LCD.
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 acknowledgment
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 dis-
tress. 
						

							GX3500S Page 72
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.
13.2  INTERCOM OPERATION
13.2.1  Communication
1. Press and hold the [
DW]
 key while in the “RADIO” mode, the mode is
changed to “INTERCOM” mode.
2. If your GX3500S is equipped with two RAM+ Mic, select the companion you
wish to communicate (RADIO, RAM, or ALL) with the [

]
/[
]
 key, then
press the [
CALL/SET]
 key.
3. When the “INTERCOM” operation is activated, “IC” is dis-
played on the RAM+ Mic and “INTERCOM” is displayed on
the GX3500S.
4. Press the PTT switch, “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.
5. Speak slowly and clearly into the mi-
crophone, hold the microphone about
1/2 inch away from your mouth.
6. When finished, release the PTT switch.
7. Press the [
DW]
 key again the mode will
revert to “RADIO” mode.
13.2.2  Calling
Hold down the [
DW]
 key for 1 second or more, when the “INTERCOM” opera-
tion is activated. A calling beep is emitted twice from the transceiver speaker.
(
RAM+ Mic’s PTT switch is pressed)
(
GX3500S’s PTT switch is pressed) 
						

							Page 73 GX3500S
13.3  PA/FOG OPERATION
The RAM+ is capable of controlling the 30W Public address, 4 fog horns, bells
and whistles.
13.3.1  Operating the PA / Hailer
1. Press and hold the [
NAV]
 key then select PA with the [

]
 or
[
]
 key.
2. Press the [
CALL/SET]
 key.
3. Press the PTT switch and speak into the microphone.
4. To turn up the PA Volume, press the PTT switch and press
the [

]
 or [
]
 keys to adjust the Audio output level. The
level can be set from 0 to 30W.
5. To adjust the listen back volume, (while in listenback mode)
press the [
VOL]
 Key, then press the [

]
 or [
]
 key to the
desired listen back volume.
To exit from the PA Hailer mode, press the [
CALL/SET]
, [
16/9]
,
or [
WX]
 key.
13.3.2  Operating the FOG Horn
The GX3500S is capable of sending Underway, Stop, Sail, Tow, Horn, Siren,
Aground and Anchor signals.
1. Press and hold the [
NAV]
 key then select FOG with the [

]
or [
]
 key.
2. Press the [
CALL/SET]
 key.
3. Select the one of the eight functions described above with
the [

]
 or [
]
 key and press the [
CALL/SET]
 key.
4. On the “
Horn” and “Siren” modes, press the PTT switch to
activate the tone through the HAIL/PA speaker.
Press the [

]
 or [
]
 keys to adjust the Audio output level.
The level can be set from 0 to 30W.
5. To adjust the listen back volume, (while in listenback mode)
press the [
VOL]
 Key, then press the [

]
 or [
]
 key to the
desired listen back volume.
To exit from the FOG HORN mode, press the [
16/9]
, [
WX]
, or
[
CALL/SET]
 key. 
						

							GX3500S Page 74
13.4  DSC/RADIO SETUP MODE
The RAM+ can access the DSC / RADIO setup menu (refer to section “10
DIGITAL SELECTIVE CALLING” and section “12 RADIO SETUP” for details).
The 
LAMP, CONTRAST, and KEY BEEP menu item accessed from the RAM+
only controls the RAM+’s display and speaker.
DSC/RADIO Setup mode from the RAM+:
1. Press and hold down the [
CALL/SET]
 key until “
RADIO SETUP” menu ap-
pears.
2. Press the [

]
/[
]
 key to select “
RADIO SETUP” 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 
						

							Page 75 GX3500S
14  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 pre-
vent damage to the transceiver.
• Keep the microphone connected or the jack covered at all times to prevent
corrosion of electrical contacts;
• Never key the microphone unless an antenna or suitable dummy load is con-
nected 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 warranty informa-
tion, are contained in section “16 WARRANTY.”
14.1  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
•VOL/SQL Knob: RA0542600
•Rotary Channel Knob: RA0569500
•Mounting Bracket: RA0544200A
•Mounting Bracket Knob: RA045910A
•Microphone Hanger: RA0458800
•Microphone Assembly: M3090118
•RAM+ Mic Routing Cable Assembly: S8101512
14.2  FACTORY SERVICE
In the unlikely event that the radio fails to perform or needs servicing, please con-
tact the following:
Standard Horizon
Attention Marine Repair Department
10900 Walker Street, Cypress, CA 90630
Telephone (800) 366-4566
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. 
						

							GX3500S Page 76
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 internal or ex-
ternal speaker.
Receiving station re-
port low transmit
power, even with trans-
ceiver set to HI power.
“HI BATTERY” or “LO
BATTERY” message is
appeared when the
power is turned on.
“PA ERROR” or “FOG
ERROR” message is
shown when the PA/
FOG mode is acti-
vated.
Your position is not dis-
played.
PROBABLE CAUSE
No DC voltage to the
transceiver, or blown
fuse.
Reversed power
wires.
Engine noise.
Accessory cable.
Antenna.
The power supply
voltage is too high or
too low.
Accessory cable.
Accessory cable.
Setting of the GPS
navigation receiver.
REMEDY
a. Check the 12VDC battery connections and
the fuse.
b. The PWR key needs to be pressed and held
to turn the radio on.
Check the power cable for DC voltage, or re-
place the fuse (6A 250V).
Make sure the red wire is connected to the posi-
tive (+) battery post, and the black wire is con-
nected to the negative (-) battery post. If the
fuse still blows, contact 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 connections of the accessory cable
(Possible short circuit on the External speaker
cable WHITE/SHIELD).
Have the antenna checked or test the trans-
ceiver with another antenna. If the problem per-
sists, contact your Dealer for servicing.
Confirm that the connected power supply volt-
age is not 17 volts or lower than 10 volts. Con-
firm that the generator has not malfunctioned.
Check the accessory cable connection (Pos-
sible short circuit on the PA speaker cable RED/
SHIELD).
Check the accessory cable connection.
Some GPS use the battery ground line for
NMEA connection.
Check the output signal format of the GPS navi-
gation receiver. This radio requires NMEA0183
format with GLL, RMB, GGA, or GNS sentence
as an output signal. If the GPS has a baud rate
setting make sure to select 4800 and parity to
NONE.
14.3  TROUBLESHOOTING CHART 
						

							Page 77 GX3500S
15.  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 Canadian
channel assignments whose counterparts in the International assignments
are duplex channels. International channels do not use “alpha” numbers. If
you call the Coast Guard on Channel 16, they will sometimes ask you to
“go to channel 22 Alpha.” This is a channel assigned to U.S.A, and Cana-
dian Coast Guards for handling distress and other calls. If your radio is set
for International operation you will go to Channel 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) control or combination of controls. Channel 22
(without an “A”) is an International 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 setting.
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 communicat-
ing with the bridge operators. Note that a limit of 1 Watt is specified for
these channels. See page 27 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 transmis-
sion. Duplex operation involves the use of one frequency for transmitting
and a separate frequency for receiving. On channels specified as duplex
on the charts, correct mode of operation is established automatically 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.
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 geo-
graphic regions. 
						

							GX3500S Page 78
6. Marine vessels equipped with VHF radios are required to monitor
Channel 16.
VHF MARINE CHANNEL CHARTCH U C I S/D TX RX CHANNEL USE01 X X D 156.050 160.650 Public Correspondence (Marine Operator)
01A X S 156.050 Port Operation and Commercial.
VTS in selected areas02 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 movement05A X X S 156.250 Port operation. VTS in Seattle06 X X X S 156.300 Inter-ship Sefety
07 X D 156.350 160.950 Public Correspondence (Marine Operator),
Port operation, ship movement07A X X S 156.350 Commercial08 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 Commercial11 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 156.750Commercial, non-commercial, ship movement (1 W)16 X X X S 156.800 International Distress, Safety and Calling17 X X X S 156.850 State Controlled (1 W)18 X D 156.900 161.500 Port operation, ship movement18A X X S 156.900 Commercial19 X D 156.950 161.550 Port operation, ship movement19A X S 156.950 US: Commercial19A X S 156.950 Coast Guard
20 X X X D 157.000 161.600 Canadian Coast Guard Only,
International: port operations and shipment20A X S 157.000 Port operation21 X D 157.050 161.650 Port operation, ship movement21A X X S 157.050 U.S. Government Only, Canadian Coast Guard22 X D 157.100 161.700 Port operation, ship movement
22A X X S 157.100 U S  and Canadian Coast Guard Liaison and
Maritime Safety Information Broadcasts announced
on channel 16 
						

							Page 79 GX3500S
VHF MARINE CHANNEL CHARTCH U C I S/D TX RX CHANNEL USE23 X X D 157.150 161.750 Public Correspondence (Marine Operator)23A X S 157.150 U.S. Government Only24 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 movement65A X X S 156.275 Port Opeations
66 X D 156.325 160.925 Public Correspondence (Marine Operator),
Port operation, ship movement66A X X S 156.325 Port Operations
67 X X X S 156.375 US: Commercial. Used for Bridge-to-bridge com
muni-cations in lower Mississippi River. Inter-ship
only,
Canada: Commercial fishing, S&R68 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 movement72 X X X S 156.625 Non-commercial (Inter-ship only)
73 X X X S 156.675 US: Port Operations,
Canada: Commercial fish ing 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 
						

							GX3500S Page 80
VHF MARINE CHANNEL CHARTCH U C I S/D TX RX CHANNEL USE75 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-movement78A X X S 156.925 Non-commercial (Recreational)79 X D 156.975 161.575 Port operation and Ship movement79A X X S 156.975 Commercial80 X D 157.025 161.625 Port operation, ship movement80A X X S 157.025 Commercial81 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 Only83 X X D 157.175 161.775 Canadian Coast Guard Only
83A X X S 157.175 U.S. Government Only,
Canadian Coast Guard Only83 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 OnlyWX01X X X D - - - 162.550 Weather (receive only)WX02X X X D - - - 162.400 Weather (receive only)WX03X X X D - - - 162.475 Weather (receive only)WX04X X X D - - - 162.425 Weather (receive only)WX05X X X D - - - 162.450 Weather (receive only)WX06X X X D - - - 162.500 Weather (receive only)WX07X X X D - - - 162.525 Weather (receive only)WX08X X X D - - - 161.650 Weather (receive only)WX09X X X D - - - 161.775 Weather (receive only)WX10X 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.