I'm confused. Is there a 1090 on the air in Knoxville now? The only thing that would come close would be WQBB 1040 AM.
There was a WMTY Mighty 1090 (now WCZZ) in Greenwood, SC, put on by the Upstate's broadcasting legend himself, Wally Mullinax. In fact, Mighty 1090 was the inspiration for the name Mighty 670 in Farragut/Knoxville.
Just a sidenote, Wally was also one of the original folks involved in the startup of legendary 92.5 WESC (Greenville, SC).