GX600D
INSTRUCTION MANUAL
PAGE 5
VOLUME ON/OFF
Rotate the
volume
control clockwise past the ‘click’ to turn
the GX600D ON. Your user MMSI is displayed momentarily
at switch-on. While receiving a signal, continue to rotate
clockwise to increase the sound in the speaker. Rotate the
control fully counterclockwise past the ‘click’ to turn the
GX600D OFF.
NOTE:
At minimum volume setting there is still sufficient
volume to be heard in a quiet cabin environment.
CHANNEL SELECTION
Standard Marine Channels
Briefly press the
key to step upwards one channel or the
key to step downwards one channel. A high beep will be
heard at each press. The
or
keys are also duplicated
on the front of the microphone.
Press and hold the
or
keys for 1.5 seconds to scroll
quickly upwards or downwards through the channels at
a rate of 10 channels per second. When the key is released
channel scrolling stops.
Weather Channels
The US weather channels are available only when the
USA Channel Set has been selected. When available,
weather channels are numbered 01 – 10 and are inserted
into the normal channel sequence below marine channel
01. They are selected in the usual way using the
or
keys. Weather channels are identified by the WX icon on
the display.
Private Channels
Up to 20 private channels can be programmed into
the GX600D for organisations that have been officially
allocated special frequencies. Private channels are
programmed on application by your nearest GME branch
office. All requests for private channel programming must
be supported by ACMA (Australian Communications and
Media Authority) documentation.
If private channels have been installed they will appear as
A0 – A9 and B0 – B9 above CH 88.
SQUELCH
To open the squelch:
Briefly press the
SQL
key. A low beep will be heard and the
squelch will open. Briefly press the
SQL
key again to close
the squelch. A high beep will be heard and the squelch will
be restored to its preset level.
Setting the Squelch Preset Level:
The preset squelch level can be adjusted to suit local
conditions. If you are in an electrically noisy location or
unwanted weak signals keep opening the squelch, you
can adjust the squelch setting so that the GX600D
remains quiet. Note that increasing the preset squelch
level will mean that stronger signals will be required to
overcome the squelch and may result in missed calls
from weaker signals.
The best setting is the minimum one required to keep the
receiver quiet.
To enter the Squelch setting mode:
Press and hold the
SQL
key for 1.5 seconds until a high
beep is heard. The present squelch setting will be displayed
in digits from -1 to -9 with -1 being minimum and -9 being
maximum squelch. The default setting is -2. While in this
mode, briefly press the or keys to increase or decrease
the squelch level respectively as required. Briefly press the
SQL
key again to exit the squelch setting mode or wait
5 seconds and it will exit automatically. A low beep will
be heard.
Keylock (Optional MC540 microphone only)
To lock the keypad press and hold the
key on the
MC540 microphone. A high beep will be heard and the
symbol will be displayed. Press and hold the
key again to cancel the keylock function.
While keylock is enabled, only the
PTT
,
,
SQL
,
16
and
DISTRESS
keys are accessible. All other keys
are locked.
Pressing
16
will cancel the keylock and revert to Channel
16 on high power.
Pressing
DISTRESS
will cancel the keylock and activate
the distress menu.
TRANSMITTING
To Transmit:
Press the
Push to Talk (PTT)
switch on the microphone.
Hold the microphone about 5 - 8 cm from your face and
speak at a normal voice level. The microphone is quite
sensitive so it is not necessary to raise your voice or shout.
Release the
PTT
when you have finished talking.
NOTE:
PTT transmissions are disabled on Channel 70.
Time-out Timer
Excessive transmission time is controlled by a time-out
timer. If the
PTT
is held for more than 5 minutes, the
transmitter will be temporarily disabled to prevent
accidental jamming of the channel frequency. Ten seconds
before the time out occurs, the ‘TX’ icon will flash and a
low warning beep will sound to notify you of the impending
timeout. Once the timeout occurs, both the backlight and
the ‘TX’ icon will flash and another low warning beep will
be heard. At this time the transmitter is disabled.
