high frequency intermittent noise

I just got off the phone with Rob at Furman. He’s a great guy, been in the pro-audio business for 24 years, 16 at Furman. He says he’s seen music studio’s go through the same issue, all of a sudden an antenna gets put up and there’s nothing to do except move. I cannot move, so then he said the next approach is to build a faraday cage and opt for better shielded cables.

This is an air borne issue, the cell tower is coupled to the air, Rob was amazed. I sent him the 2 sound samples I posted here so he could hear.

Well...on the positive side, I've eliminated a ground loop, and have reduced the noise floor in the music quite a bit.  The Nordost QKore took care of my ground loop issue, and the Furman P-2400 IT reduced my noise floor.  

Does anyone have any experience with AudioQuest cables? They appear to have an active shield that is battery powered...

Thank you EVERYONE who participated.  I'm a little tired...but I will get some tin foil now...

Before you get all spendy on fancy audiophile cables* is there some pro level shielding material that you can buy to wrap the cables? I know that the shields typically go to ground on one end, but I gotta believe there’s a cheaper  DIY way to see if better shielding works rather than buying fancy cable.
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*I’m not a ’cable denier’ - I use high quality "audiophile" cable in my system, but I’d like you to solve your problem rather than just throw money at it. And cables can get spendy fast- whether they are synergistic with the sound of your system is a separate matter.

@whart Are you thinking tin foil as well?

@james1969 - no, I was not. I was thinking of that braided stuff that is sold by electronic parts wholesalers or specialty suppliers, like the guy that sells the Duelund? cable that in certain cases needs shielding.

I reserve tin foil for hat lining, but make sure it covers the back of my neck. :)