Talk:Unknow signal lewis county Washington state

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This is GSM interference. It is your phone handshaking (at full power) with the tower so it can route a text or call.

Second this. Although I'm not as excited about the explanation with regard to those frequency bands specifically, if you're close to the source (or you are the source, i.e. its coming from your phone), it could show up on harmonics of GSM freqs. We get it all the time from lecturers that put their phone near the mic. I say move this to known. 208.87.236.180 08:24, 20 October 2016 (NZDT)

The AMAmplitude Modulation band is quite far from the GSM band though, wouldn't it have to be significantly massive signal power to show up at such distant frequency bands? --Cartoonman (talk) 12:18, 21 October 2016 (NZDT)

I've heard this from PC speakers for years when GSM phones are in close proximity. 162.254.71.124 19:35, 14 December 2016 (NZDT)

Yep. GSM noise.

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