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Junior Varsity
Wireless Squelch
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<blockquote data-quote="Tim McCulloch" data-source="post: 211919" data-attributes="member: 67"><p>Eh... not with FM. Squelch at its most basic is about the RF level, not the audio level. Because communications have to work in high RF environments where RF-level squelch won't work well, we had CTCSS (continuous tone coded squelch system) and later, digital squelch systems. At no point does AF enter into it unless these is so little carrier modulation that signal is indistinguishable from the demodulated noise floor, but again that isn't about the squelch.</p></blockquote><p></p>
[QUOTE="Tim McCulloch, post: 211919, member: 67"] Eh... not with FM. Squelch at its most basic is about the RF level, not the audio level. Because communications have to work in high RF environments where RF-level squelch won't work well, we had CTCSS (continuous tone coded squelch system) and later, digital squelch systems. At no point does AF enter into it unless these is so little carrier modulation that signal is indistinguishable from the demodulated noise floor, but again that isn't about the squelch. [/QUOTE]
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