Uniden uh012sx Owner's Manual page 22

CTCSS & DCS
(Continuous Tone Coded Squelch System)
CTCSS
is a feature that allows a group to talk to each other
without hearing other users on the same channel.
select/
1. Press key momentarily to enter CTCSS
mode. The current selected CTCSS tone flashes.
2. Press key to select the required CTCSS
tone (OFF or 1-38).
select/
3. Press key six times to exit and confirm
the selected setting.
For channels with a CTCSS tone setting, the CTCSS tone is displayed below
the channel indicator. For channels with the setting of CTCSS OFF, there will
be no display below the channel indicator.
DCS
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 1-99 plus DCS 100-104 (represented by o0-o4 on
the display).
select/
1. Press key momentarily to enter CTCSS/DCS mode.
2. Use key to select a DCS code. The DCS codes
follow on after the CTCSS codes. The DCS icon will
replace the CTCSS code on the display.
select/
3. Press key six times to exit and confirm
the selected setting.
The DCS icon will appear when selected. To turn
off DCS select CTCSS OFF and no display will show
below the channel indicator.
Channels 5 and 35 are used for emergency channels.
Transmit is inhibited on channels 22 and 23.
CTCSS and DCS will not operate on these channels.
&
(Digital Coded Squelch)
(9)