CTCSS-1CONTINUOUS 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 doso, select the same CTCSS tone as selected by the other persons in your group. A CTCSS tone is subaudible and isselectable 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 CTCSS1 Select your desired band.2 Press [TONE] 2 times to activate the CTCSS function.• The icon appears on the display when the CTCSSfunction is ON.• Each press of [TONE] changes the selection as follows:Tone ( ) ➡ CTCSS ( ) ➡ DCS ( ) ➡ Off (nodisplay).3 Press [F], [T.SEL].• The current CTCSS frequency appears on the displayand blinks.4 Rotate the Tuning control to select your desiredCTCSS frequency.• Refer to the table below for the available frequencies.• To exit the CTCSS frequency selection, press [ESC].5 Press any key other than the Tuning control and[ESC] to complete the setting.6 When you are called: The transceiver squelch opensonly when the selected CTCSS tone is received.When you make a call: Press and hold [PTT], thenspeak into the microphone.• To cancel CTCSS, press [TONE] until CT no longerappears on the display.You can also select a CTCSS frequency by using themicrophone:1 Select your desired band.2 Press [TONE] 2 times to activate the CTCSS function.• The icon appears on the display when the CTCSSfunction is ON.• Each press of [TONE] changes the selection as follows:Tone ( ) ➡ CTCSS ( ) ➡ DCS ( ) ➡ Off (nodisplay).3 Press [F], [T.SEL].• The current CTCSS frequency appears on the displayand blinks.4 Press the key programmed as [ENTER].5 Enter a frequency reference number (01 ~ 42) usingthe microphone keypad.• Refer to the table below for frequencies and theirreference numbers.No. Frequency(Hz) No. Frequency(Hz) No. Frequency(Hz)01 67.0 16 110.9 31 186.202 69.3 17 114.8 32 192.803 71.9 18 118.8 33 203.504 74.4 19 123.0 34 206.505 77.0 20 127.3 35 210.706 79.7 21 131.8 36 218.107 82.5 22 136.5 37 225.708 85.4 23 141.3 38 229.109 88.5 24 146.2 39 233.610 91.5 25 151.4 40 241.811 94.8 26 156.7 41 250.312 97.4 27 162.2 42 254.113 100.0 28 167.914 103.5 29 173.815 107.2 30 179.9