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CONTINUOUS TONE CODED SQUELCH SYSTEM (CTCSS)
USING CTCSS
1 Select the desired band.
2 Press [F], [6] to switch the CTCSS function ON (or
OFF).
• “CT” appears when CTCSS is ON.
3 Press [F], [9].
• The current CTCSS frequency appears and blinks.
4 Turn the Tuning control to select a tone frequency.
5 Press any key other than [LAMP] and [MONI] to
complete the setting.
6 When you are called:
The squelch of your transceiver opens only when the
selected tone is received.
When you make a call:
Press and hold [PTT].
You may sometimes want to hear calls from only 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.
Simply select the same CTCSS tone as selected by the
other persons in your group. A CTCSS tone is
subaudible and is selectable from among the 38
standard tone frequencies.
Note:
CTCSS does not cause your conversation to be private. It only
relieves you of listening to unwanted conversations.
2
1
2
1
Received
Not
Received
Not
Received
CTCSS frequency:
82.5 Hz
CTCSS: OFF
CTCSS frequency:
82.5 Hz
CTCSS frequency:
100.0 Hz