SELECTIVE CALL
Continuous Tone Coded Squelch System (CTCSS)
You may sometimes want to hear calls only from specific persons. The Continuous Tone Coded Squelch System (CTCSS) allows you to ignore (not hear) unwanted calls from other persons who are using the same frequency. To do so, select the same CTCSS tone as selected by the other persons in your group. A CTCSS tone is subaudible and is selectable from among 42 tone frequencies.
Note: CTCSS does not cause your conversation to be private. It only relieves you from listening to unwanted conversations.
■Using CTCSS
Press [F], [1] 2 times to turn the CTCSS function ON.
•Continually press [F], [1] to cycle through the functions as follows: Tone ON >> CTCSS ON >> DCS ON >> OFF.
•The “
” icon appears when the CTCSS function is ON.
Note:
◆You cannot use the CTCSS and Tone/ DCS functions simultaneously. Switching the CTCSS function ON after having activated the Tone/ DCS functions deactivates the Tone/ DCS functions.
◆If you select a high CTCSS frequency, receiving audio or noise that contains the same frequency portions may cause CTCSS to function incorrectly. To prevent noise from causing this problem, select an appropriate squelch level.
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