 In 1960, the station signed on as WRBD-FM as a simulcast for AM 1470 WRBD (now WWNN), in Broward County.Because WRBD was a daytime-only station, it used WRBD-FM to simulcast its R&B format around the clock.It later changed its call sign to WCKO-FM, ending the simulcast and airing a more FM sound but still keeping its urban contemporary format.