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The volume of the tones is typically low enough with respect to the voice signal that you can't hear it. Occasionally the tone generator in a radio will be poorly calibrated, and you do hear it. Usually the radio has a tone scan function, and you can use that to find out what tone is being used. You can also turn on tone squelch if you have the tone set ...


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Many radio manufacturers are aware that people don't want to hear CTCSS tones - so they put high-pass filters on both the output (speaker) and input (microphone). That eliminates the tone before it gets to your ears, and will also prevent an errant tone near the microphone from triggering a repeater somewhere. Some of us might not agree that the tones are ...


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