The town that banned Wi-Fi

Re:The town that banned Wi-Fi by leni536 on Sunday June 21, 2015 @03:20PM (#9754597)

I think most "electronic noise" is related to coil whine [1]. Although I can imagine that the hsync frequency of cathode ray tubes can cause audible noise. That would explain why you could hear CRT TVs but not CRT monitors. If you take the NTSC standard you can calculate ~15kHz for hsync frequency which is audible.

[1] https://en.wikipedia.org/wiki/Coil_noise

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Re:The town that banned Wi-Fi by whoopdedo on Sunday June 21, 2015 @04:57PM (#9754960)

Does the TV have speakers? Most do. You can get audible frequencies leaking onto the audio line and emitting noise. My LCD monitor has built in speakers that I never use and have turned "off", but every once in a while I hear a hiss from them.

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Re:The town that banned Wi-Fi by LnxPrgr3 on Monday June 22, 2015 @01:13AM (#9756271)

I doubt it's what's going on with most TVs (especially since LCD TVs don't seem to have this problem), but my old, cheap TV tuner card emits a 15.9kHz squeal on its line out, so it's not impossible.

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Re:The town that banned Wi-Fi by kw71 on Sunday June 21, 2015 @09:06PM (#9755672)

That is noise inherent in the (low quality) audio amplifier.

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