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SIGNALING-1
CTCSS/ DCS/ CROSS TONE
CTCSS
You may sometimes want to hear calls only from specifi c persons. The Continuous Tone Coded Squelch System (CTCSS) allows you
to ignore (not hear) unwanted calls from other persons who are using the same frequency. To do so, select the same CTCSS tone as
selected by the other persons in your group. A CTCSS tone is subaudible and is selectable from among 42 tone frequencies.
DCS
Digital Coded Squelch (DCS) is another application which allows you to ignore (not hear) unwanted calls. It functions the same way as
CTCSS. The only differences are the encode/ decode method and the number of selectable codes. For DCS, you can select from 104
different codes.
Note: CTCSS/ DCS does not cause your conversation to be private. It only relieves you from listening to unwanted conversations.
USING CTCSS
1 Select your desired band.
2 Press [TONE] 2 times to activate the CTCSS function.
• The icon appears on the display when the CTCSS function is
ON.
• Tone (
) ➡ CTCSS ( ) ➡ DCS ( ) ➡ Cross Tone ( :
default) ➡ Off (no display).
3 Press [F], [T.SEL].
• The current CTCSS frequency appears on the display and blinks.
4 Rotate the Tuning control to select your desired CTCSS
frequency.
• Refer to the table below for the available frequencies.
• To exit the CTCSS frequency selection, press [ESC].
5 Press any key other than the Tuning control and [ESC] to
complete the setting.
6 When you are called: The transceiver squelch opens only
when the selected CTCSS tone is received.
When you make a call: Press and hold [PTT], then speak
into the microphone.
• To cancel CTCSS, press [TONE] until CT no longer appears on
the display.
You can also select a CTCSS frequency by using the
microphone:
1 Select your desired band.
2 Press [TONE] 2 times to activate the CTCSS function.
• The icon appears on the display when the CTCSS function is
ON.
• Each press of [TONE] changes the selection as follows:
Tone (
) ➡ CTCSS ( ) ➡ DCS ( ) ➡ Cross Tone ( :
default) ➡ Off (no display).
3 Press [F], [T.SEL].
• The current CTCSS frequency appears on the display and blinks.
4 Press the key programmed as [ENTER].
5 Enter a frequency reference number (01 ~ 42) using the
microphone keypad.
• Refer to the table below for frequencies and their reference
numbers.
No.
Frequency
(Hz)
No.
Frequency
(Hz)
No.
Frequency
(Hz)
01 67.0 16 110.9 31 186.2
02 69.3 17 114.8 32 192.8
03 71.9 18 118.8 33 203.5
04 74.4 19 123.0 34 206.5
05 77.0 20 127.3 35 210.7
06 79.7 21 131.8 36 218.1
07 82.5 22 136.5 37 225.7
08 85.4 23 141.3 38 229.1
09 88.5 24 146.2 39 233.6
10 91.5 25 151.4 40 241.8
11 94.8 26 156.7 41 250.3
12 97.4 27 162.2 42 254.1
13 100.0 28 167.9
14 103.5 29 173.8
15 107.2 30 179.9