 Originally built and operated by the City of St. Petersburg, until 1974, the station offered a variety of programming including dramas, talk, music, and was an ABC affiliate.In 1974 then owner Plough flipped the easy listening music to country, eventually making WSUN one of the most successful AM stations in Florida.By the mid-80's music audiences had moved to FM, and then owner CBS flipped to all news, which was unsuccessful, eventually switching back to country music.