81Convenient FunctionsConvenient FunctionsCommunicating with specific stationsUsing the tone squelch functionThis radio is equipped with the CTCSS (Continuous Tone-coded Squelch System whichallows audio to be heard only when receiving signals containing the same frequencytone as the tone that has been set in the tone squelch menu. By matching the tonefrequency with the partner station in advance, a quiet standby monitoring is possible.CautionCTCSS does not function in digital modes. To transmit a signal using a CTCSS code, use thekey to switch the communication mode to AMS (Auto Mode Select function) or analog (FM) mode.Selecting the tone frequencyThe tone frequency can be selected from 50 frequencies (from 67.0 Hz to 254.1 Hz).1 Press and hold for over one second.The Setup menu appears.2 Rotate the DIAL to select [4 SIGNALING], then press.The menu list appears.3 Rotate the DIAL to select [1 TONE SQL FREQ], thenpress .4 Rotate the DIAL to select the desired frequency.Tip The default setting: 100.0 Hz5 Press and hold for over one second.Sets the tone frequency and returns the display to the previously viewed screen.Tip You can also return to the previous screen by pressing 3 times.
