The current KMCN-FM went on-the-air as KCLN-FM 97.7 on December 7, 1970. The station used its KCLN-AM programming to simulcast broadcasts in the early 1970's as many AM radio stations did in back during that period. From 1976 to 1978, the station experimented and flipped its format to a hybrid of Top 40 with live disc jockeys mostly independent of its sister station. Under the watchful eye of P.D. Bill "The Wildman" Warner, the station's moniker became "Rock 98", playing a blend of Top 40, Album Rock, Disco, Adult Contemporary as well as some Oldies.