User Manual

6. Useful Functions
43
6
6-4 Tone Squelch/Reverse Tone Squelch Function
The Tone Squelch/Reverse Tone Squelch system sends almost inaudible low-
frequency signals (CTCSS tones) by radio waves and has the receiver detect
the presence or frequency of the signals, so that only audio of a specied
communication can be heard from the receiver speaker.
The Tone Squelch function opens the squelch when the received tone
frequency matches with the frequency specied by the DJ-X30.
If you specify the tone frequency of the communication you want to listen to in
advance, the squelch opens only when that tone frequency is received.
The Reverse Tone Squelch function opens the squelch when the received tone
frequency does not match with the frequency specied by the DJ-X30.
1
Rotate the dial to tune to the channel on which the
CTCSS (Tone Squelch/Reverse Tone Squelch) system is
used.
2
Press the [FUNC] key to display the icon on the LCD.
3
Press the
key several times. For Tone Squelch select
the icon when it is illuminated. For Reverse Tone
Squelch, select the icon when it is blinking.
4
Rotate the dial to select the
CTCSS tone frequency and
press the [FUNC] key.
For more information, refer to "Table of
Available CTCSS Tones" (
+
P. ••).
When the Tone Squelch function is ON, the icon appears on the LCD
and the squelch opens when a signal of the specied tone is received.
When the Reverse Tone Squelch function is ON, the icon appears
on the LCD and the squelch closes when a signal of the specied tone is
received.
5
To deactivate the Tone Squelch/Reverse Tone Squelch
function, press the [FUNC] key and then press the
key several times until "OFF" appears on the LCD. Then,
press the [FUNC] key.
CAUTION
• You should always set the normal squelch level properly even when the
Tone Squelch function is used. If the normal squelch remains open, the
Tone Squelch operation will require a long time.