Strange noise on 40m

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  • Updated 2 weeks ago
I have noticed a really strange noise pattern this evening, most noticeable on 40m band.....it is on and off in cycles, the impulses are going slower and faster. Added two YouTube videos for better understanding it. Is not coming from my home. Has anyone heard anything like this, any clue, ideas?

https://www.youtube.com/watch?v=CTR9BVeejsc

https://www.youtube.com/watch?v=36AXwQL-a9M

Thanks
Mario
KC8P

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KC8P

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Posted 3 weeks ago

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David-N5PSM

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what is that scope software you are running?
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David-N5PSM

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Noise looks to be like it might be dirty insulators on a power line?   Can you filter it for 60 Hz to see?

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KC8P

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I'm running the https://www.zeitnitz.eu/scope_en works great for my needs!
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KC8P

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David, I'm quite experienced with power line noise identification....this is not a power line noise. I suspect some electrical device used in the evening by my neighbors. 
(Edited)
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K1UO - Larry

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in the evening?  under cabinet LEDS or something lighting or heating associated?
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David-N5PSM

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curious that it is peaked on your pass-band.   try a different antenna and see what you get? mabe it will tell us something?


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KC8P

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Yes, it was happening between 9pm-11pm EST
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Sergey Abrikosov

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I also see noise, but I think it is electrical.
I have new neighbour in the next house and I think noise is coming from there.
I am not sure I want to talk to them yet. Any recomendation for filtering?
Sergey, KN7K