Seems to be like a DSL modem continuously training. They use multiple pilot tones when establishing the link, which then turns to a broadband mush like that. The frequency seems a bit high though unless you're seeing harmonics. Perhaps it's below the band noise on the lower frequencies for you?
@ygt32
4 жыл бұрын
Very funny.. Well at least until the Aliens land. (Shock horror)
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