G X 4 0 0
I N S T R U C T I O N M A N UA L
9
To use the Dual Watch feature, adjust the
Squelch
control so the radio is quiet, select your
preferred working or club channel then press the
DW
key. ‘DW’ will appear on the display and
the channel display will alternate between Channel 88 and your selected channel.
If a signal is received on your selected channel, the radio will pause on that channel but will
continue to switch to Channel 88 and a brief interruption to the signal will be noticed. Once the
signal has gone, normal Dual Watch switching will resume.
If a signal appears on Channel 88 at any time, the radio will stop switching and will remain on
Channel 88 for as long as the signal is present. Once the signal has gone, normal Dual Watch
switching will resume.
NOTE:
If you press the
PTT
switch while Dual Watch is selected, your GX400 will transmit on
the selected channel. If you wish to talk on Channel 88, press the key to cancel the Dual
Watch and switch straight to Channel 88.
TRIPLE WATCH (MARINE MODE)
The Triple Watch function is an extension of the Dual Watch feature. It allows the GX400 to
monitor three channels – Channel 88, the selected channel and a Priority channel. Each channel
is scanned equally for signals with priority given first to Channel 88, then the Priority channel
and lastly the selected channel.
When Triple Watch is selected, the ‘TW’ icon is displayed. The Priority channel used is the one
stored in the PR1 memory.
To use the Triple Watch mode, first program your Priority channel into the PR1 memory then
select your preferred working channel using the or keys. Now briefly press the
TW
key.
A high beep will be heard, ‘TW’ will appear and the channel display will alternate between
Channel 88, your selected channel and your Priority channel.
To cancel Triple Watch
Briefly press the
TW
key. A low beep will be heard and ‘TW’ will disappear from the display.
TRIPLE WATCH FEATURES
If a signal appears on Channel 88
The radio will switch immediately to Channel 88 and ‘88’ will be displayed. At this point the
selected channel and the PR1 channel are no longer being monitored because Channel 88 has
highest priority. During this time the
PTT
may be pressed for normal transmissions on Channel 88.
Once Channel 88 has become inactive for 2 seconds the Triple Watch function will resume.
If a signal appears on the PR1 channel
Scanning will pause on the PR1 channel
but
Channel 88 will continue to be monitored every 2
seconds (the selected channel is not monitored). During this time the
PTT
may be pressed for
normal transmissions on the PR1 channel (monitoring of Channel 88 ceases while transmitting).
Once the PR1 channel has become inactive for 2 seconds Triple Watch will resume.
If a signal appears on the selected channel
Scanning will pause on the selected channel
but
Channel 88
and
the PR1 channel will
continue to be monitored every 2 seconds. During this time the
PTT
may be pressed for normal
transmissions on the selected channel (monitoring of Channel 88 and the Priority channel ceases
