In the 1970s the station became WKLR "Kooler 99", an urban soul station until the swap to county in the summer of 1981, and subsequent change of the call letters from WKLR-FM to WKKO.
In the 1970s the station became WKLR "Kooler 99", an urban soul station until the swap to county in the summer of 1981, the station kept WKLR but changed its "name" to K100. In 1986 it changed the call letters from WKLR-FM to WKKO.