Leap Day

FM 107.7 WIVK is a Country station in Knoxville, Tennessee. They've used a frog mascot since 1976 when a station employee was recording a commercial and realized that the calls letters sounded like a frog's croak..."Wivick Wivick Wivick." WIVK is a consistently top-rated station in the Knoxville market and held (or possibly still holds) a #1 streak that started in 1980 and lasted until at least the summer of 2011.

UPDATE: I just read that WIVK was #1 in the fall ratings with a healthy 17.7 share.

WRJZ

Not sure when this sticker from Knoxville, Tennessee's WRJZ dates from. In the late 1970s they were a Top-40 station but would later switch around to Country, Adult Contemporary and Oldies. "Big Orange" is a nickname of The University of Tennessee sports programs and their rabid fans. WRJZ is currently a Religious Teaching station known as "Joy 620."