GME TX3340 - Manual (Page 8)

PA G E 8 i n s t r u c t i o n m A n uA l t X 3 3 4 0
Disabling CtCss/DCs 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/dcs if the
ctcss/dcs tone is set to ‘oF’.
Please see the CTCSS and DCS Tone Frequency Charts on
pages 23 and 24.
Monitoring the Channel
it is useful to be able to temporarily open your radio’s squelch
to allow you to listen for signals from other ctcss/dcs
users outside your group. Because their ctcss/dcs tone is
different to yours, your squelch would normally remain closed,
preventing you from hearing them. you can use the SQL key
to open the squelch and listen to the channel to check that
it is clear before transmitting. this will help prevent you from
accidentally transmitting over the top of others.
To monitor the channel
Briefly press the SQL key. if there are no signals present, you
will hear the usual hiss of an empty channel. Press the SQL
key again to restore the squelch to its previous setting.
SCANNING
the tX3340 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 tX3340 features two scan groups by default - 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.
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 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.
e.g. scanning channels 1-8 with Priority channel 20 in
Group scan.
seleCting a sCan grouP
To pre-select a scan group
the radio is initially set to open scan mode. to toggle
between scan Groups, press the F key followed by the OS/
GS key. ‘oPEn’ or ‘GrouP’ will be displayed briefly to confirm
your selection.
PrograMMing sCan Channels
your tX3340 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 using the or keys
• if ‘m’ is visible to the right of the channel number, the
selected channel is already in the scan memory.
2 1 3 4 5 6 7 8
2 1 3 4 20 5 6 7 8 20