Standard Horizon Marine Tranciever Quantum GX35000S Operating Instructions

							Page 21 GX3500S
[
4(
DW)]
 Key
When in radio mode, this key is used to directly select channel digit “4” in
a channel number.
Secondary use (Depends on the transceiver version)
Press the [
F]
 key first then press the [
4(
DW)]
 key, scan for voice commu-
nications on the priority channel and another selected channel until a
signal is received on either channel (Dual Watch). Refer to section “10.11
DUAL WATCH (
TO PRIORITY CHANNEL)
” for details.
[
5(
IC)]
 Key
When in radio mode, this key is used to directly select channel digit “5” in
a channel number.
Secondary use
Press the [
F]
 key first then press the [
5(
IC)]
 key, when the optional RAM+
Mic is connected, intercom operation will operate between radio and RAM+
Mic. Refer to section “10.16 INTERCOM OPERATION” for details.
[
6(
NAV)]
 Key
When in radio mode, this key is used to directly select channel digit “6” in
a channel number.
Secondary use
Press the [
F]
 key first then press the [
6(
NAV)]
 key, the LCD displays NAV
GPS Data, Time, SOG (Speed Over Ground), and COG (Course Over
Ground) when a GPS is connected to the accessory cable of the
GX3500S. See section “8.4 CONNECTION OF GPS WITH NMEA OUT-
PUT” for details.
[
7(
SCRM)]
 Key
When in radio mode, this key is used to directly select channel digit “7” in
a channel number.
Secondary use
Press the [
F]
 key first then press the [
7(
SCRM)]
 key, when the optional
CVS2500 Voice Scrambler Unit is installed, available to operate the Voice
Scrambler function. Refer to section “10.17 VOICE SCRAMBLER” for
details.
[
8(
PA)]
 Key
When in radio mode, this key is used to directly select channel digit “8” in
a channel number.
Secondary use
Press the [
F]
 key first then press the [
8(
PA)]
 key, available to operate the
30 Watt PA function. Refer to section “10.13 PA/FOG OPERATION” for
details. 
						

							GX3500S Page 22
[
9(
FOG)]
 Key
When in radio mode, this key is used to directly select channel digit “9” in
a channel number.
Secondary use
Press the [
F]
 key first then press the [
9(
FOG)]
 key, available to operate
the Fog Horn function. Refer to section “10.13 PA/FOG OPERATION”
for details.
[
0]
 Key
When in radio mode, this key is used to directly select channel digit “0” in
a channel number.
[
CLR]
 Key
Press the [
CLR]
 Key to cancel the menu selection and/or keypad entry.
[
ENT]
 Key
Press the [
ENT]
 Key to determine the menu selection and/or keypad
entry.
[
CALL(
MENU)]
 Key
Press the [
CALL(
MENU)]
 key to access the DSC OPERATION menu.
The “
INDIVIDUAL CALL,” “GROUP CALL,” and “ALL SHIPS CALL” func-
tions can be accessed from the DSC OPERATION menu.
Secondary use
Press and hold the [
CALL(
MENU)]
 key to access the “
Radio Setup”
(refer to section “12 RADIO SETUP”) or “
DSC Setup” menu (refer to
section “11 DIGITAL SELECTIVE CALLING”).
“
Radio Setup” menu “DSC Setup” menu 
						

							Page 23 GX3500S
[
F]
 Key
Press the [
F]
 key to activate the “Alternate” key function.
[
DISTRESS]
 Key
Used to send a DSC Distress Call. To send the distress call refer to section
“11.3.1 (Transmitting A DSC Distress Call).”
ACCESSORY CONNECTION CABLE
Connects the GX3500S to a GPS, a PA speaker, and an external speaker.
DC INPUT CABLE
Connects the radio to a DC power supply capable of delivering 12V DC.
RAM+ MIC CONNECTORS
Connects the GX3500S to the enhanced RAM+ MIC (Remote Access Mi-
crophone). Refer to section “13 ENHANCED RAM+ MIC OPERATION” for
details.
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 when the transceiver is in radio mode. If the transceiver
is in the intercom operation mode (between the RAM+ and the GX3500S),
or PA mode, it activates the GX3500S microphone for voice communica-
tions.
MICROPHONE
Transmits the voice message with reduction of background noise, using
Clear Voice Noise Reduction Technology.
MICROPHONE SPEAKER
The audio heard through internal radio speaker is heard through micro-
phone speaker.
[
UP(

)]
 / [
DOWN(
)]
 KEYS
The [
UP(

)]
 and [
DOWN(
)]
 on the microphone function the same as the
CHANNEL selector knob on the front panel of the transceiver.
[
16/9]
 Key
Pressing the [
16/9]
 key immediately recalls channel 16 from any location.
Press and hold the [
16/9]
 key to recall channel 9. Pressing the [
16/9]
 key
again will revert the radio to the previous selected channel. 
						

							GX3500S Page 24
10  BASIC OPERATION
10.1  RECEPTION
1. After the transceiver has been installed, ensure that the power supply and
antenna are properly connected.
2. Press and hold the [
PWR]
 key until the radio turns on.
3. Turn the SQL knob fully counterclockwise. This state is known as “squelch off”.
4. Turn up the VOL knob until noise or audio from the speaker is at a comfort-
able level.
5. Turn the SQL knob clockwise until the random noise disappears. This state
is known as the “squelch threshold.”
6. Turn the CHANNEL selector knob to select the desired channel. Refer to
the channel chart on page 78 for available channels.
7. The keypad on the front may be used to directly select channels. Example
to select channel 68:
1.  Press [
6(
NAV)]
2.  Press [
8(
PA)]
3.  Press [
ENT]
In the USA and Canadian modes, press and hold in the [
0]
 key to select the
“A” channel. Example to select channel 22A:
1.  Press [
2(
MEM)]
2.  Press [
2(
MEM)]
3.  Press [
0]
 until “A” appears to the right of the channel number
4.  Press [
ENT]
8. When a message is received, adjust the volume to the desired listening
level. The “
” indicator in the LCD is displayed indicating that the chan-
nel is being used.
10.2  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 “
” indicator in the LCD is
displayed.
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 1/2 inch (1.3 cm) from the mouth
for optimum performance. 
						

							Page 25 GX3500S
10.3  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 microphone.
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 transmitting again, the PTT
switch must first be released and then pressed again.
10.4  SIMPLEX/DUPLEX CHANNEL USE
Refer to the VHF MARINE CHANNEL CHART (page 78) for instructions on use
of simplex and duplex channels.
NOTE
All channels are factory-programmed in accordance with International,
Industry Canada (Canada), and FCC (USA) regulations. Mode of opera-
tion cannot be altered from simplex to duplex or vice-versa.
10.5  INTERNATIONAL, USA, AND CANADA MODE
1. To change the modes, hold the [
16/9]
 key and press the [
WX]
 key. The
mode changes from International to Canadian to USA with each press of
the [
WX]
 key.
2. “INTL” will be displayed for International mode, and “CAN” will be displayed
for Canadian mode, and “USA” will be displayed on the LCD for USA mode.
3. Refer to the VHF MARINE CHANNEL CHART (page 78) for allocated chan-
nels in each mode.
10.6  NOAA WEATHER CHANNELS
NOTE
NOAA Weather channels are available in the waters of USA and Canada only.
1. To receive a NOAA weather channel, press the [
WX]
 key from any channel.
The transceiver will go to the last selected weather channel.
2. Turn the CHANNEL selector knob on the radio or [
UP(

)]
 / [
DOWN(
)]
keys on the microphone 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.
10.6.1  NOAA Weather Alert
In the event of extreme weather disturbances, such as storms and hurricanes,
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 Alert feature is enabled (see 
						

							GX3500S Page 26
section “12.9 WX 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 “10.12.”
2. Press the [
SCAN]
 key once to start memory scanning or hold down the
[
SCAN]
 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 nor-
mal 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 Alert feature is also engaged while the transceiver is re-
ceiving on one of the NOAA weather channels.
10.6.2  NOAA Weather Alert Testing
NOAA tests the alert system ever Wednesday between 11AM and 1PM. To test
the QUANTUM’s NOAA Weather feature, on Wednesday between 11AM and
1PM, setup as in previous section and confirm the alert is heard.
10.7  EMERGENCY (CHANNEL 16 USE)
Channel 16 is known as the Hail and Distress Channel. An emergency is de-
fined as a threat to life or property. In such instances, be sure the transceiver is
on and set to CHANNEL 16. Then use the following procedure:
1. Press the microphone push-to-talk switch and say “Mayday, Mayday, May-
day. This is 
           ,            ,            ” (your vessel’s name).
2. Then repeat once: “Mayday, 
           ” (your vessel’s name).
3. Now report your position in latitude/longitude, or by giving a true or mag-
netic bearing (state which) to a well-known landmark such as a navigation
aid or geographic feature such as an island or harbor entry.
4. Explain the nature of your distress (sinking, collision, aground, fire, heart
attack, life-threatening injury, etc.).
5. State the kind of assistance your desire (pumps, medical aid, etc.).
6. Report the number of persons aboard and condition of any injured.
7. Estimate the present seaworthiness and condition of your vessel. 
						

							Page 27 GX3500S
8. Give your vessel’s description: length, design (power or sail), color and
other distinguishing marks. The total transmission should not exceed 1
minute.
9. End the message by saying “OVER.” Release the microphone button and
listen.
10. If there is no answer, repeat the above procedure. If there is still no re-
sponse, try another channel.
10.8  CALLING ANOTHER VESSEL (
CHANNEL 16 OR 9)
Channel 16 may be used for initial contact (hailing) with another vessel.
However, its most important use is for emergency messages. This channel
must be monitored at all times except when actually using another channel.
It is monitored by the U.S. and Canadian Coast Guards and by other vessels.
Use of channel 16 for hailing must be limited to initial contact only. Calling
should not exceed 30 seconds, but may be repeated 3 times at 2-minute inter-
vals. 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 communi-
cations. 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 con-
tact. For example, Channels 68 and 69 are some of the channels available to
non-commercial (recreational) boaters. Monitor your desired channel in advance
to make sure you will not be interrupting other traffic, and then go back to either
channel 16 or 9 for your initial contact.
When the hailing channel (16 or 9) is clear, state the name of the other vessel
you wish to call and then “this is” followed by the name of your vessel and your
Station License (Call Sign). When the other vessel returns your call, immedi-
ately request another channel by saying “go to,” the number of the other chan-
nel, 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 begin-
ning and end of the contact.
Remember to return to Channel 16 when not using another channel. Some
radios automatically monitor Channel 16 even when set to other channels or
when scanning. 
						

							GX3500S Page 28
10.9  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 ex-
amples for USA use are Channels 24, 25, 26, 27, 28, 84, 85, 86, and 87. Call
the marine operator and identify yourself by your vessel’s name, The marine
operator will then ask you how you will pay for the call (telephone credit card,
collect, etc.) and then link your radio transmission to the telephone lines.
The marine telephone company managing the VHF channel you are using may
charge a link-up fee in addition to the cost of the call.
10.10  OPERATING ON CHANNELS 13 AND 67
Channel 13 is used at docks and bridges and by vessels maneuvering in port.
Messages on this channel must concern navigation only, such as meeting and
passing in restricted waters.
Channel 67 is used for navigational traffic between vessels.
By regulation, power is normally limited to 1 Watt on these channels. Your radio
is programmed to automatically reduce power to this limit on these channels.
However, in certain situations it may be necessary to temporarily use a higher
power. See page 18 ([
H/L]
 key) for means to temporarily override the low-power
limit on these two channels.
10.11  DUAL WATCH (
TO PRIORITY CHANNEL)
Dual watch allows the radio to monitor one channel and the assigned Priority
channel. By default the priority channel is set to 16, however the priority chan-
nel may be changed by referring to section 12.5 Priority Channel set.
1. Adjust the SQL knob until the background noise disappears.
2. Select the channel you wish to dual watch to “Priority channel.”
3. Press the [
F]
 key followed by the [
4(
DW)]
 key.
The display will scan between Priority channel and
the channel that was selected in step 2.
If a transmission is received on the channel selected
in step 2, the GX3500S will dual watch between the
working channel and the Priority channel.
4. To stop Dual Watch, press the [
CLR]
 key or press the [
F]
 key followed by
the [
4(
DW)]
 key again. 
						

							Page 29 GX3500S
10.12  SCANNING
Allows the user to select the scan type from Memory scan or Priority scan.
“Memory scan” scans the channels that were programmed into memory. “Pri-
ority scan” scans the channels programmed in memory with the priority chan-
nel.
10.12.1  Selecting the Scan Type
1. Press and hold down the [
CALL(
MENU)]
 key until
“
Radio Setup” menu appears.
2. Press the [
ENT]
 key, then select “
SCAN Type” in the
“
Radio Setup” menu with the CHANNEL selector
knob.
3. Press the [
ENT]
 key.
4. Turn the CHANNEL selector knob to select “
Prior-
ity
” or “Memory.”
5. Press the [
ENT]
 key to store the selected setting.
6. To exit this menu and return to radio operation mode
press the [
16/9]
 key.
10.12.2  Memory Scanning (
M-SCAN)
1. Adjust the SQL knob until background noise disappears.
2. Select a desired channel to be scanned using the
CHANNEL selector knob. Press the [
F]
 key followed
by the [
2(
MEM)]
 key, “MEM” will appear 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, select the channel
then press the [
F]
 key followed by the [
2(
MEM)]
 key, “MEM” will disappear
in the LCD.
5. To start scanning, press the [
F]
 key followed by the
[
3(
SCAN)]
 key.
“
M-SCAN” appears on the LCD. Scanning will pro-
ceed from the lowest to the highest programmed
channel number and will stop on a channel when a transmission is received.
6. The channel number will blink during reception.
7. To stop scanning, press the [
16/9]
, [
WX]
, [
CALL(
MENU)]
, or PTT key. 
						

							GX3500S Page 30
10.12.3  Priority Scanning (
P-SCAN)
In the default setting, Channel 16 is set as the priority channel. You may change
the priority channel to the desired channel from the Channel 16 by the Radio
Setup Mode, refer to section “12.5 PRIORITY CHANNEL SET.”
1. Adjust the SQL knob until background noise disappears.
2. Select a desired channel to be scanned using the
CHANNEL selector knob. Press the [
F]
 key followed
by the [
2(
MEM)]
 key, “MEM” will appear 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, select the channel
then press the [
F]
 key followed by the [
2(
MEM)]
 key, “MEM” will disappear
in the LCD.
5. To start priority scanning, press the [
F]
 key followed
by the [
3(
SCAN)]
 key. “
P-SCAN” appears on the LCD.
Scanning will proceed between the memorized chan-
nels and the priority channel. CH 16 the priority chan-
nel will be scanned after each programmed channel.
6. To stop scanning, press the [
16/9]
, [
WX]
, [
CALL(
MENU)]
, or PTT key.
You may change the scan resume time by the Radio Setup Mode, refer to
section “12.7  SCAN RESUME TIME.”
10.13  PA/FOG OPERATION
PA/FOG mode allows the transceiver to be used as a 30W hailer when an
optional STANDARD HORIZON 220SW or 240SW HAIL/PA Horn is installed.
When in Hail mode the HAIL/PA Listen’s Back (acts as a microphone and sends
sound to the front panel speaker) through the HAIL/PA speaker which provides
two-way communications through the HAIL/PA speaker.
NOTE
When in PA or FOG mode the GX3500S will receive the last selected VHF
channel before entering into the PA or FOG mode and receive DSC calls.
PA HAIL mode: Allows the transceiver to be used as a power hailer when
an optional STANDARD HORIZON 220SW or 240SW
HAIL/PA Horn is installed. The Hail mode has a listen-back
feature which provides two way communication through
the HAIL/PA speaker.
FOG HORN mode: Automatic signaling is transmitted through the HAIL/PA
speaker.