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techniker

Need signal verification...something weird

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All the major wireless providers are slowing putting up 5G towers around my area and ever since a new tower was put up about 300 meters from my house I've been getting headaches and ringing in my ears. I've noticed this when I'm near any of the new low towers that have gone up. While scanning around trying to find out what is being sent out from those new towers I stumbled upon a signal that is very active and it seems to be coming from everywhere. I can pick it up on my handheld RF Explorer spectrum analyzer, RTL-SDR and BladeRF 2.0 A9 with various antennas. I've tried using my laptop and desktop. It sits at the end of the 2.4 band between 2486-2500 MHz. I took a drive with my laptop and BladeRF around the city and out into the country and it's there all the time (with slight changes to amplitude) so there's no way this could be coming from the new towers. Where could this be coming from? Satellite? I'm going to try making a small Faraday cage to see if I can block it.

band_of_tones.png

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It actually looks like the lower 2.5 range is a lower harmonic of a 5 GHz signal. Same pattern but more intense!

band_of_tones_5ghz.png

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This is interesting...  

Can you post a more isolated waterfall of a narrower range to see a single signal better?

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Looks like some kind of carrier signal.  Need to dig into the exact freq range and see how it falls with 5G band.  

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