Anyone recognize this interference on my waterfall at 20m?

unit9419

I'm getting this very bold pattern - but only on 20 meter band. Does anybody recognize this? See screenshot image.png

unit9419

It appears to be at 244hz intervals across the band

Erika - KØDD

Yup Probably something like this: Solving an RFI Problem in a New Monitor - YouTube

Erika - KØDD

THats a link btw.... My Neighbor's PLASMA big screen TV blitzes out 160meters basically all of sections of HF too.

unit9419

[{"insert":"Thank you for your responses.\n It turned out to be caused by two different devices. My Ubiquiti eight port unify switch and my web power switch from Digital Loggers. \nBoth are important components of this remotely controlled station.\nhaven’t tried any baluns or chokes which I understand may help - I don’t know.\n"}]

WX7Y

Are you running these devices from wall warts? if there 12 to 15 volt devices you can probably run them from the station power supply.

Pat_W5WTH

My “washing machine” QRN looks a lot like that.

KD0RC

If it is local to your shack and ferrites or other filtering don't work, you might want to think about a noise canceller like the Timewave ANC-4 or the MFJ unit.