G X 8 5 0
I N S T R U C T I O N M A N U A L
9
channel 16, ‘P-CH’ is displayed.
Briefly press the
key again to return to the last selected
channel or to go to an alternative channel press the
or
keys.
SECOND PRIORITY CHANNEL
Programming the Second Priority Channel
The second priority channel can be preset through the main
menu (see menu section) or can be changed directly from the
display as follows.
1. Press and hold the
key to switch to the second
Priority channel. ‘P-2nd’ is displayed.
2. Press and hold the
key again. ‘Set 2nd Prior CH’ is
displayed and the channel number flashes.
3. Use the
or
keys to select a new channel.
4. Press and hold the
key to store the new channel as
the second priority channel.
NOTE:
Priority channel 16 is factory set and cannot be
changed.
HI/LO POWER
Briefly press the
key to toggle high or low transmitter
power. The display will show ‘Hi’ or ‘Lo’ to confirm the
selected power setting.
NOTE:
Some channels may be permanently set to Hi or Lo
power by default. If any of these channels are selected you
will not be able to change the power setting for that channel.
KEY LOCK
Press and hold the
key to lock the keypad. The
icon will be displayed when the keypad is locked and all keys
except the
PTT
and any Distress related keys will be locked.
To unlock the keypad, press and hold the
key again. The
icon will disappear.
SCRAMBLER
Your radio incorporates a simple voice scrambler that, when
activated, will make your signal intelligible only to other
radios using the same scrambler technology.
•
To activate the Scrambler, briefly press the
key. will
appear on the display.
•
To disable the Scrambler, briefly press the
key again.
will disappear from the display.
MAN OVER BOARD (MOB)
The MOB function is designed to automatically send a MOB
distress call with your MMSI and latitude and longitude.
To activate the MOB function, press and hold the
key for
2 seconds.
NOTE:
In order to make DSC distress calls including MOB calls
you must have your user MMSI programmed into your radio.
BACKLIGHT
The backlight operates automatically whenever any key
(except the
PTT
) is pressed and switches off about 7 seconds
after the last keypress. The backlight provides lighting for the
display, keypad and Distress button.
Water Activated Backlight Alert
If the GX850 is immersed in water, sensors built into the
case will cause the backlight to flash urgently. This feature is
designed to make it easier to locate and recover your radio if
it is accidentally dropped into water.
SCANNING
Basic Scan
The basic scan function allows the radio to scan all channels
for transmissions. When a signal is detected the scan pauses
to allow the signal to be heard. Once the signal has gone the
scan resumes.
To activate the scan function, briefly press the
key.
‘SCAN’ appears on the display and the channel numbers
change rapidly.
To deactivate the scan function, briefly press the
key
again. ‘SCAN’ disappears from the display.
Priority Scan
Priority scan is similar to the basic scan except it regularly
inserts channel 16 into the scan. Signals received on channel
16 have priority over signals received on other channels.
