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CTCSS/ DCS/ CROSS TONE – 1
CTCSS/ DCS/ CROSS TONE
CTCSS
You may sometimes want to hear calls only from specific 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.
CTCSS
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.
• Each time you press
[TONE], the selection changes as
follows:
Tone (
) ° CTCSS ( ) ° DCS ( ) ° Cross
Tone (
: default) ° Off (no display).
<Additionally, when APRS is ON and Voice Alert is
configured, Voice Alert ON is added to the above cycle.>
3 Press [F], [TONE].
• The current CTCSS frequency appears on the display
and blinks. The default frequency is 88.5 Hz.
4 Press [ ]/[ ] or 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 [ OK] 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 “ ” no longer
appears on the display.
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