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CONTINUOUS TONE CODED SQUELCH SYSTEM (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.
First select the same CTCSS tone as selected by the
other persons in your group. A CTCSS tone is
subaudible and is selectable from among 38 standard
tone frequencies.
Note: CTCSS does not cause your conversation to be private. It only
relieves you from listening to unwanted conversations.
Received
CTCSS freq.:
82.5 Hz
USING CTCSS
1 Press the left or right [BAND SEL] to select band A
or B.
• If necessary, press [F], then the same [BAND SEL] to
2 Press [TONE] to activate the CTCSS function.
• "CT" appears when the CTCSS function is ON.
• Each press of [TONE] changes the selection as Tone ➔
3 Press [F], [T.SEL].
• The current CTCSS frequency appears and blinks.
CTCSS freq.:
82.5 Hz
4 Press [c c c c c ]/ [d d d d d ] to select a CTCSS frequency.
• The selectable frequencies are the same as for the tone
CTCSS freq.:
100 Hz
5 Press [OK] to complete the setting.
You will hear calls only when the selected tone is
received. To answer the call, press and hold Mic [PTT],
then speak into the microphone.
Skip steps 3 to 5 if you have already programmed an
CTCSS: OFF
appropriate CTCSS frequency.
recall the sub-band.
CTCSS ➔ DCS ➔ No selection.
frequency. Refer to the table in "Selecting a Tone
Frequency" {page 28}.
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