The 93.3 frequency got its start on September 18, 1964 as KWDM. George Webber, who was the founder of the original KWDM (now KWKY), brought back his unique programming after having sold the AM station in 1959 to the 3M Corporation. The FM station consisted of block programming of music, including classical, operatic and ethnic music not heard elsewhere in Des Moines. The schedule also included a weekday talk show, "Listen While You Work," hosted by his wife, Edith Dunham Webber, and Drake University and high school sports.