the station began broadcasting on january 29, 1965, holding the call sign wtmb-fm. it was owned by the tomah-mauston broadcasting company. in the 1960s, it simulcast the am 1460 wtmb from dawn until 2 p.m. it broadcast in fm stereo, airing an easy listening format, and was the largest easy listening fm station in wisconsin. in the 1970s, the station aired a mor format, as a partial simulcast with 1460 wtmb. in the early 1980s, its simulcast ended, and it aired mor music, talk, and farm programming independently.