WNFZ

94.3 FM in Knoxville, Tennessee became an Alternative Rock station in July 1994 with new call letters WNFZ.  Except for a brief time as a Talk station around 2013, they were either an Alternative or Active Rock station until 2019 when they flipped to Adult Hits as "Jack FM."  I'm not 100% sure that the top sticker was printed when they had the call letters WNFZ or WKNF.  WNFZ would make more sense given the "94Z" branding but it's hard to say.  If you know, leave a comment.