Uniden UH088SX - Manual (Page 18)

Operation
UNIDEN UHF CB Transceiver
16
Continuous Tone Coded Squelch System (CTCSS)
This feature allows signals to be received only from callers who have selected the same CTCSS code.
Press or to select the desired channel to use CTCSS.
Press and hold for 2 seconds. code flashes.
to select the desired CTCSS code 01 - 38.
Press once to store the new setting.
To turn CTCSS OFF please follow the above steps but select the desired CTCSS code oF (before code 01).
CTCSS
Press or
Channels 05 and 35 are Emergency Channels.
CTCSS cannot be selected on these channels.
If a button is not pressed within 10
seconds the uh088sx will automatically
exit Select Mode.