 After being instituted a construction permit as WEBU in 1988, the station signed on with an adult contemporary format, and then classic rock, all under the call letters WMJB.After stunting with TV theme songs, the station flipped to rhythmic adult contemporary in the fall of 1997.Adopting the calls WKPO, the station was known as "Power 105-9" with a more pop/dance sound featuring hits from the 1970s, 1980s and 1990s with less repetition.