Gme TX3120S User Manual download pdf (Page 25)

TX3120S INSTRUCTION MANUAL PAGE 25

2. Rotate the Channel control until ‘CTCxx’ or

‘DTxxx’ is displayed then press the Channel

control to select it.

3. Rotate the Channel control to enable CTCSS/

DCS and select a suitable CTCSS or DCS code.

•

To use CTCSS, select from CTC01 to CTC50

(CTCSS tones 01 to 50).

•

To use DCS, scroll past CTC50 to select from

DT001 to DT104 (DCS codes 001 to 104).

•

To switch CTCSS/DCS off, select CTCOF.

When ﬁnished press and hold the Channel control

to exit the menu.

Enabling CTCSS/DCS on a Channel (Silent

mode)

Enabling CTCSS/DCS on a channel will prevent

the Squelch from opening on that channel unless

the incoming signal matches your selected CTCSS/

DCS tone. Other users on the same channel who

are not using your CTCSS/DCS tone will still be

received by your radio (the

icon will still appear

on the display) – but their voice will not be heard

in the speaker.

Only when someone transmits on the channel

using your CTCSS/DCS tone will the Squelch open

to allow the signal to be heard. Channels where

CTCSS/DCS have been enabled are said to be in

‘Silent mode’. Silent mode can be enabled on any

channel except emergency channels 5 and 35.

NOTE: You cannot enable Silent mode unless

a CTCSS or DCS tone has been selected in the

Conﬁguration menu. If CTCSS/DCS has been set to

OFF, Silent mode is inhibited.

To Enable Silent Mode on a channel:

1. Select the required channel.

2. Press and hold the key until a high beep

is heard.

3. An icon (for CTCSS) or icon (for DCS)

will be displayed in the lower right of the

display to indicate Silent mode is now enabled

on that channel.

NOTE: The CTCSS/DCS tone you selected will be

used for all channels that have ‘Silent’ enabled.

To Disable Silent Mode on a channel:

1. Select the required channel. An icon (for

CTCSS) or icon (for DCS) will be displayed

indicating Silent mode is currently enabled.

2. Press and hold the key until a low beep is

heard.

3. The or icon will disappear to indicate

Silent mode has been removed from that

channel.

IMPORTANT: When Silent mode is enabled on a

channel you should always look for the

icon for

signs of trafﬁc on the channel before transmitting

to ensure you do not accidentally transmit over the

top of another user. Alternatively, you can enable

‘Busy Channel Lockout’ in the Conﬁguration Menu

which will automatically prevent your radio from

transmitting if the channel is already in use.

Busy Channel Lockout

When using Silent mode with CTCSS/DCS, you

may not notice when others outside your CTCSS/

DCS group are transmitting on your channel. As a

result you could accidentally transmit over the top

of someone else.

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Gme TX3120S User Manual Page 25

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