Success!! I found a snap-on ferrite ring from an old 28.8 modem I had. I wrapped the pair of cables around it a couple times and the radio station is gone!!
Thanks for all your help
SW
Glad you found a solution. My gear is all shielded. With copper foil depending on how old your preamp is. They may not be 100% shielded. You can certainly bring the gear back to me.
Chris