CTCSS/CDCSS Operation
Your scanner is equipped with a Continuous Tone Controlled Squelch System (CTCSS) and Continuous Digital Controlled Squelch System (CDCSS) which allow squelch to open only when the tone you have programmed with a specific frequency is received along with a transmission. When using CTCSS or CDCSS, consider the following:
Your Scanner Scan Speed becomes slow while Subaudible Tone function is activated.
You cannot enter CTCSS and CDCSS tones in the AM Air Band.
If you have more questions about CTCSS or CDCSS see What is CTCSS and CDCSS on page 4.
Programming a CTCSS Tone/CDCSS Tone
1.Select a channel you want to program.
Note: The priority function can not be activated while programming CTCSS/CDCSS codes. Priority may be reactivated after storing codes.
2.Press 
to activate the Subaudible Tone function.
3.Press
/REM.
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