Scanning - GME TX3420 Instruction Manual

1 . rotate the channel knob to select the required channel .
2 . Press and hold the sQl key . A high beep will be heard
and 'silEnt' will appear on the display .
you may activate ctcss on as many channels as you wish
except channel 5 which is designated for emergency use .
DisaBling ctcss on a channEl
repeat steps 1 and 2 above . A low beep will be heard and
'silEnt' will disappear from the display .
note: you will not be able to activate ctcss if the ctcss
tone is set to 'oF' .
Please see the ctcss tone Frequency chart on page 21

SCaNNINg

the tX3420 has a scAn function that allows groups of user
programmable channels to be scanned for signals . channels
can be scanned at 20 channels per second . When a signal
is found, scanning will pause on that channel to allow the
signal to be heard, then resume scanning when the channel
is clear again .
scan grouPs
the tX3420 features two scan groups - open scan and
Group scan .
open scan
Allows any of the installed channels to be scanned for
activity . if a busy channel is found, scanning will pause to
allow the signal to be heard . once the channel has been
clear for 5 seconds, scanning will resume automatically .
1 2 3 4 5 6 7 8
e .g . scanning channels 1-8 in open scan
group scan
Also allows any of the installed channels to be scanned
for activity, but in addition, it also inserts your Priority
channel into the scan sequence . this means that your
Priority channel will be monitored regularly while scanning
to ensure that no calls are missed . Any signals received on
your Priority channel will take precedence over any signals
received on the other channels .
1 2 3 4 20 5 6 7 8 20
e .g . scanning channels 1-8 with Priority channel 20
in Group scan
PA G E 6
sElEcting a scan grouP
to pre-select a scan group
the radio is initially set to open scan mode . to change to
Group scan mode, press the F key then the os/gs key to
select Group scan .
Programming scan channEls
your tX3420 is supplied with all 40 uhF cB channels
programmed into the open scan memory . Any channels
not needed, can be removed if required . the Group scan
memory is empty by default and you will need to add
channels to it before use .
to add or remove channels from either
scan memory:
1 . Ensure that the radio is not already scanning . if it is,
briefly press the scan key to cancel the scan function .
2 . Ensure you have the required scan group pre-selected .
3 . select the required channel by rotating the
channel knob.
• If 'M' is visible to the right of the channel number,
the selected channel is already in the scan memory .
to remove the selected channel, press and hold the
scan key for a few seconds until a beep is heard .
'm' will then disappear indicating the channel is no
longer in memory .
• If 'M' is not visible, then the selected channel is not
in the memory . to add the selected channel, press
and hold the scan key for a few seconds until
a high beep is heard . 'm' will now appear .
4 . repeat step 3 to add or remove other channels in the
scan memory .
to start scanning
to begin scanning, briefly press the scan key . A high
beep will be heard, 'scAn' will appear in the display and
the radio will begin scanning . in addition the selected scan
group will be displayed below the channel number .
note: if there is only one channel programmed into the
open scan memory or none in the Group scan memory,
a long low beep will be heard when you press the scan
key and the command will be ignored .
to stop scanning
to cancel the scan, briefly press the scan key . A low beep
will be heard and 'scAn' will disappear from the display .
i n s t r u c t i o n m A n u A l t X 3 4 2 0