Standard Horizon Marine Tranciever GX1280S Operating Instructions

GX1280SPage 51
8.6  VOICE SCRAMBLER
(Operates only when the optional CVS2500 is installed)
This menu is used to setup the channels to be scrambled and the scrambler
code.
NOTE
This menu will not appear unless a CVS2500 is installed.
1. Press and hold down the [
CALL/SET]
 key until
“RADIO SETUP” menu appears.
2. Press the [
CALL/SET]
 key then select “SCRAM-
BLER” in the “RADIO SETUP” menu with the
CHANNEL selector knob.
3. Press the [
CALL/SET]
 key then select “CODE” in
the “SCRAMBLER” menu with the...

GX1280SPage 52
8.7  CHANNEL NAMING
This selection allows you to customize the name of a channel from the de-
fault name.
1. Press and hold down the [
CALL/SET]
 key until
“RADIO SETUP” menu appear.
2. Press the [
CALL/SET]
 key, then select “CH NAME”
in the “RADIO SETUP” menu with the CHANNEL
selector knob.
3. Press the [
CALL/SET]
 key.
4. Turn the CHANNEL selector knob to select the
channel to be named and press the [
CALL/SET]
key.
5. Turn the CHANNEL selector knob scroll through
the alphabet and 0 -...

GX1280SPage 53
8.8  TRUE MAGNETIC CHANGE (
NAV display)
Allows customizing the GPS COG (Course Over Ground) displayed on the
LCD to be in True or Magnetic.
1. Press and hold down the [
CALL/SET]
 key until
“RADIO SETUP” menu appear.
2. Press the [
CALL/SET]
 key, then select “TRUE
MAG” in the “RADIO SETUP” menu with the
CHANNEL selector knob.
3. Press the [
CALL/SET]
 key.
4. Turn the CHANNEL selector knob to select  “MAG-
NETIC” or “TRUE.”
5. Press the [
CALL/SET]
 key to store the selected
setting.
6....

GX1280SPage 54
9  RAM+ MIC OPERATION
If the enhanced optional RAM+ Mic (CMP25) is connected to the remote
microphone connector on the transceiver’s rear panel, the transceiver can
use the remote control operation except for a few functions. The RAM+ Mic
supplied with 23 feet (7 m) of routing cable and can be extended up to 70
feet (21 m) using three 23 feet extension cables model CT-100. The inter-
com operation can be used between the RAM+ Mic and the transceiver.
9.1  RAM+ MIC CONTROLS
SQUELCH CONTROL...

GX1280SPage 55
VOLUME KEY (
VOL)
Activates the volume adjusting mode.
Press this key to activate the volume adjusting mode. Press the
microphone’s [

]
 or [
]
 to adjust the volume.
POWER SWITCH (
PWR)
Press and hold down this key to turn to the transceiver and RAM+ Mic on
and off.
PTT (
Push-To-Talk)
 SWITCH
Activates transmission.
[
H/L]
 KEY
Toggles between high and low power. When the [
H/L]
 key is pressed
while the transceiver is on channel 13 or 67, the power will temporarily
switch from LO to...

GX1280SPage 56
[
CALL/SET]
 Key
The [
CALL/SET]
 key functions as the enter key.
Secondary use
Press the [
CALL/SET]
 key to access the DSC OPERATION menu.
Press and hold the [
CALL/SET]
 key to access the SETUP menu.
[
DW]
 Key
Watches for a transmission on CH16 and another selected channel until
either signal is received. (Dual watch)
NOTE: When the DSC SCANNING feature is enabled (see section 7.15
DSC SCAN), the radio watches for a transmission on CH16, another
selected channel, and CH70 until either...

GX1280SPage 57
will appear on the LCD. After the message has been
sent, the radio will sound a Distress Alarm.
4. The transceiver “shadow-watches” for a transmission
on CH16 or CH70 until an acknowledgment signal is
received. “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...

GX1280SPage 58
9.2.2  Calling
Hold down the [
DW]
 key for 1 second or more, when the “INTERCOM” op-
eration is activated. A calling beep is emitted twice from the transceiver
speaker.
9.3  DSC/RADIO SETUP MODE
The  CMP25 can access the DSC / RADIO setup menu (refer to section 7
“DSC/RADIO SETUP” for details). However, the LAMP, CONTRAST, and
KEY BEEP menu item which is accessed from the CMP25 only controls the
CMP25’s display and speaker.
DSC/RADIO Setup mode from the CMP25:
1. Press and hold down the...

GX1280SPage 59
10  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 prevent damage to the transceiver.
• Keep the microphone connected or the jack covered at all times to pre-
vent corrosion of electrical contacts;
• Never key the microphone unless an antenna or suitable dummy load is
connected to the transceiver.
• Ensure that the supply voltage to the transceiver does not exceed 16...

GX1280SPage 60
10.2  FACTORY SERVICE
In the unlikely event that the radio fails to perform or needs servicing,
please contact 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.