Standard Horizon Marine Tranciever GX1256S Operating Instructions

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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....

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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-...

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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...

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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...

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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...

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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 [...

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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....

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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...

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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...

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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...