Standard Horizon Marine Tranciever GX1280S Operating Instructions

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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...

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SCAN” with the CHANNEL selector knob.
4. Press the [
CALL/SET]
 key.
5. Turn the CHANNEL selector knob to select “ON”or
“OFF.”
6. Press the [
CALL/SET]
 key to store the selected
setting.
7. To exit this menu and return to radio operation
mode press the [
16/9]
 key.
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...

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ber will appear, and the first space will flash.
5. Select first number of your MMSI, then press the
[
CALL/SET]
 key to step to the next number.
6. Repeat step 5 to set your MMSI (up to nine digits).
7. When finished programming the number, press
and hold the [
CALL/SET]
 key to store the number
in memory.
8. To exit this menu and return to radio operation mode press the [
16/9]
 key.
7.4  ADDITIONAL DIGITAL SELECTIVE CALLING INFORMATION
For additional information the USCG has an...

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5. If an acknowledgement is received, select chan-
nel 16 and advise your distress situation.
6. If no acknowledgment is received, the distress call
is repeated in 4 minute intervals until an acknowl-
edgment is received.
7. When a DSC Distress acknowledgment is re-
ceived, a distress alarm sounds and channel 16
is automatically selected. The LCD shows the MMSI of the ship respond-
ing to your distress.
RECEIVED ACK:acknowledgment signal is received.
RECEIVED RLY:relay signal is received...

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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, prior-
ity for the call can be designated as Urgency or Safety.
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. This call is the same as saying PAN PAN
PAN on channel 16.
SAFETY Call:Used to transmit boating safety...

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7.6.2 Receiving an All Ships Call
1. When an all ships call is received, an emergency
alarm sounds.
The radio will automatically change to channel 16.
2. Press any key to stop the alarm.
3. Turn the CHANNEL selector knob to see the MMSI
of the vessel transmitting the All Ships Call.
4. Monitor channel 16 or traffic channel until the UR-
GENCY voice communication is completed.
7.7  INDIVIDUAL CALL
This feature allows the MATRIX to contact another vessel with a DSC VHF
radio and...

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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]
 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]
 key.
9. After the eleventh letter or space has been entered, press the [
CALL/
SET]
 key to advance to the MMSI (Maritime Mobile Service Identity Num-
ber) number entry.
10. Turn the...

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5. Turn the CHANNEL selector knob to select “AUTO”
or “MANUAL.”
6. Press the [
CALL/SET]
 key to store the selected
setting.
7. To exit this menu and return to radio operation
mode press the [
16/9]
 key.
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]
 key until
“RADIO SETUP” menu appear.
2. Turn the...

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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. Press the [
CALL/SET]
 key. The “DSC OPERA-
TION” menu will appear.
2. Turn the CHANNEL selector knob to select “INDI-
VIDUAL.” (To cancel, select “EXIT” with the CHAN-
NEL selector knob or press the [
16/9]
 key.)
3. Press the [...

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7.7.5  Receiving an Individual Call
When receiving an individual call, an acknowledgment must be sent back to
the calling station. The MATRIX default setting is Automatic, but has a selec-
tion that allows you to manually send a reply before the radio will switch to the
requested calling channel. This selection is useful if you want to see who is
calling and requesting you to switch to a channel for communications, similar
to caller id on a cellular phone.
1. When an individual call is...