I would guess your pirate is located in Blaine (near the WIMZ tower as a matter of fact). It's a former radio guy who is now employed outside the industry. He has a small transmitter that he has put on the air periodically over the past few years. He's a little bit rock and roll and his wife is a little bit country. Sort of Donny and Marie without the incest.
The Sweetwater station is all over the road but usually no country. They play sweepers left over from their oldies days with no announcers, no news, not even weather. But you wouldn't hear them in East Knoxville without an antenna on a weather balloon.