At wits' end with radio through the speakers!

You need shielded phono cable from your turntable to the phono stage (this is where the problem is, if you're using unshielded ) and maybe even from a phono stage to amp.

Do you hear the radio interference with any other source than phono? 

Oh brother.
I have the exact same problem(not with a Herron) and no matter what I’ve tried from everybody I’ve spoken to nothing helps. SS or tube. It suddenly started one day and I wonder if some sort of magnetic field developed in my large apartment building that I can do nothing about short of moving which is impossible. Digital is fine. Analog is no longer viable.

Give Keith Herron a call and see what he thinks. Keith is a great guy and easy to reach, from my experience. It doesn’t matter if you didn’t buy it directly from him, he’ll still help you. Good luck!

Thanks everyone for the responses!

so:

Digital stage (Auralic, Chord) are quiet as a mouse.
Phono cable is shielded: Cardas Clear Sygnus.
Talked to Keith Herron. Indeed very approachable and helpful guy. His suggestion is the shielded cables.

One thing i will try now is Clip-on Ferrite Ring i saw in one of the forums. Cheap enough.

The last option is to move to West Virginia ! :)