Dcs (Digital Coded Squelch) - Uniden UH089NB Owner's Manual

Operation
DCS (Digitally Coded Squelch)
DCS is a digital extension of CTCSS. It provides 104 extra, digitally
coded, squelch codes that follow after the 38 CTCSS codes. CTCSS
1-38, followed by DCS 1-104.
Follow the steps for setting a CTCSS code. Turn the Rotary Channel
Selector until the DCS codes appear. Press [MON] to set. The DCS icon
and code will display.
Channels 5 and 35 are used for emergency channels.
CTCSS and DCS will not operate on these channels.
NOTE
UNIDEN UH089NB
19
UHF CB Transceiver