Standard Horizon Marine Tranciever GX1255S Operating Instructions

GX1255S7.3  KEY BEEP (ON or OFF)
1.Press and hold down the CALL/SET key until “RADIO
SETUP” appears.
2.Press the CALL/SET key, then press the UP or DOWN
key to select “KEY BEEP.”
3.Press the CALL/SET 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 key to store the selected setting.
6.Press the DOWN key to select “EXIT,” then press the
CALL/SET key.
7.Press the DOWN key to select “EXIT,” then press the...

GX1255SPage 30 7.5 CHANNEL NAME CHANGE
1.Press and hold down the CALL/SET key until “RADIO
SETUP” appears.
2.Press the CALL/SET key, then press DOWN key to se-
lect “CH NAME.”
3.Press the CALL/SET 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 key to enable adjusting this item.
5.Press the UP or DOWN key to select the first character
(letter, number, or symbol) in the name you wish to store,
the press the CALL/SET key to move to the next...

GX1255S7.6  TIME OFFSET
Sets the time difference between local time and UTC (Universal Time Coor-
dinated or GMT Greenwich Mean Time). Time is displayed, if connected a
GPS receiver.
1.Press and hold down the CALL/SET key until “RADIO
SETUP” appears.
2.Press the CALL/SET key, then press the DOWN key to
select “TIME.”
3.Press the CALL/SET 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...

GX1255SPage 32 7.7  INDIVIDUAL DIRECTORY SETUP (DSC)
1.Press and hold down the CALL/SET key
until “RADIO SETUP” appears.
2.Press the DOWN key to select “DSC
SETUP”.
3.Press the CALL/SET key to select “IN-
DIVIDUAL DIRECTORY.”
4.Press the CALL/SET key to select
“ADD.”
5.Press the CALL/SET 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 key to move
to next character.
7.Repeat step 6 as many times as necessary to complete...

GX1255S7.8  INDIVIDUAL REPLY
1.Press and hold down the CALL/SET key
until “RADIO SETUP” appears.
2.Press the DOWN key to select “DSC
SETUP.”
3.Press the CALL/SET key, then press the UP or DOWN
key to select “INDIVIDUAL REPLY.”
4.Press the CALL/SET 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 key to store the selected setting.
7.Press the UP or DOWN key to select “EXIT,” then press
the CALL/SET key.
8.Press the UP or DOWN key to...

GX1255SPage 34 7.10  INDIVIDUAL RING
1.Press and hold down the CALL/SET key
until “RADIO SETUP” appears.
2.Press the DOWN key to select “DSC
SETUP.”
3.Press the CALL/SET key, then press the UP or DOWN
key to select “INDIVIDUAL RINGER.”
4.Press the CALL/SET 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 key to store the selected ringing
time.
7.Press the UP or DOWN key to...

GX1255S7.12  DSC SCANNING
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 key
until “RADIO...

GX1255SPage 36 7.13  USER MMSI INPUT
1.Press and hold down the CALL/SET key
until “RADIO SETUP” appears.
2.Press the DOWN key to select “DSC
SET.”
3.Press the CALL/SET key, then press the DOWN key to
select “USER MMSI.”
4.Press the CALL/SET 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 key to define the
setting.
6.Repeat above step to set your MMSI (up to 9 digits).
When the last number of...

GX1255S8  OPERATING PRACTICES
8.1  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 proce-
dure:
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...

GX1255SPage 38 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
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...