That is what I figured it to be. Tracked it down to the return output of a MB. Replaced module and took care of the issue. I have heard from other noise guys that the wide hump at 30mhz is a bonding issue with the modules? Checked all bonding on the strand and everything appeared to be good. Most likely module itself not bonding?
This is CABL.com posting #356473. Tiny Link: cabl.co/mbETJ