Tone Squelch (Ctcss) - Kenwood UBZ-LH68 Instruction Manual

You may sometimes want to hear calls from only specific
persons. The Continuous Tone Coded Squelch System
(CTCSS) allows you to ignore (not hear) unwanted calls
from persons in other groups who are using the same
channel. Simply select the same CTCSS tone (number)
as your party. A CTCSS tone is subaudible and is
selectable from among the 38 standard tone
frequencies.
Note:
In order to use CTCSS, your party also must use a transceiver which
has the CTCSS function.
CTCSS does not cause your conversation to be private. It only
relieves you from listening to unwanted conversations.
Note: You can also use Communication Range In/Out Detect {page 15}
with CTCSS when your party uses a KENWOOD UBZ-LH68 transceiver;
in this mode, more amount of battery power is consumed than usual.
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TONE SQUELCH (CTCSS)

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