Uniden SC200 Operating Manual page 10

Smart Scanner Automatically programs your SC200
with all the frequencies and Alpha Characters of the
frequency for your local area by accessing our
national database with your PC or just an external
modem. (No PC required.)
CTCSS/CDCSS (Continuous Tone Controlled
Squelch System), (Continuous Digital Controlled
Squelch System). When activated, the SportCat will
only tune to a frequency if the associated CTCSS tone
or CDCSS tone you have programmed is included
with the transmission. You can also use this feature to
search for a CTCSS tone or CDCSS tone when
monitoring a transmission.
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