Anyone ever seen this before?

[KJ4TDM]

Found this lately on my waterfall on SDRSharp. Was wondering if anyone out there may have come across it in the past. Its from 143.945Mhz-145.067.

 

[mancow]

Yea and it seems to be usb noise here.

 

[KJ4TDM]

So you are seeing it to? Well that rules out being something local.

 

[mancow]

It's the same pattern I've seen when usb interference is creeping in. Moving the cable or a ferrite bead can help.