PAGE 10 INSTRUCTION MANUAL TX3345
difference in performance between the different tone sets.
If using CTCSS you can chose either the 50 tone set or the 38
tone set. GME radios traditionally use the 50 tone set, however
the 38 tone set is also included for compatibility with other
radios.
To switch between the 50 and the 38 tone/ set:
1. Switch the radio off.
2. Press and hold the
SQL
ALPHA
key while switching the radio
on again.
3. CTC50 or CTC38 will be displayed briefly to indicate the
selected tone set.
to seleCt A CtCss or DCs tone
NOTE: When selecting tones, CTCSS tones are prefixed with ‘CTC’
and DCS tones are prefixed with ‘DC’. Please refer to the CTCSS/
DCS table later in this manual for a list of tone numbers and their
associated frequencies.
1. Press and hold the
MENU
F
key until the radio beeps.
2. Briefly press the
MENU
F
key repeatedly until ‘CTCxx’ or
‘DCxxx’ is displayed (where xx represents a tone number in
the CTCSS or DCS Tone Frequency Chart).
3. Press the
or keys to scroll through the tone list
and select the required CTCSS or DCS tone. CTCSS tones
are grouped in the lower half of the list while DCS tones are
grouped above the CTCSS tones.
4. If you wish to view the CTCSS frequency or DCS tone
instead of the table number, briefly press the
LVL
PRI
key. To
return to the table code, briefly press the
LVL
PRI
key again.
5. To disable CTCSS or DCS tones altogether scroll to the
bottom of the list and select ‘CTCoF’.
6. To store the setting, press and hold the
MENU
F
key until the
radio beeps or wait for it to time out.
enAbling CtCss/DCs on A ChAnnel
Once a CTCSS or DCS tone has been selected, it can be
enabled on individual channels.
1. Press the
or keys to select the required channel.
2. Press and hold the
SQL
ALPHA
key. A high beep will be heard and
the (CTCSS) or (DCS) will appear indicating that the
‘Silent’ mode has been activated on that channel.
You may activate CTCSS or DCS on as many channels as you
wish except channel 5 which is designated for emergency use.
DisAbling CtCss/DCs on A ChAnnel
1. Press the
or keys to select the required channel.
The or icon will be visible indicating that the ‘Silent’
mode is currently enabled on that channel.
2. Press and hold the
SQL
ALPHA
key. A low beep will be heard and
the or icon will disappear indicating that the ‘Silent’
mode has been disabled on that channel.
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
ALPHA
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
ALPHA
key. If there are no signals present, you
will hear the usual hiss of an empty channel. Press the
SQL
ALPHA
key again to restore the Squelch to its previous setting.
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