In 1967, WDAF-FM flipped to Top 40. The new format aired in afternoons and nights, while maintaining a simulcast with the AM station in the morning and midday. The FM started a middle of the road format on January 15, 1968, referring to themselves as "Popular 102". The station upgraded to 100,000 watts on New Year's Day, 1971. Also that year, WDAF-FM flipped to oldies, the first time an FM station in Kansas City has attempted at the format. It began with Drake-Chenault's syndicated "History of Rock and Roll". Drake didn't actually call it oldies; they referred to the automated programming as "Vintage Top 40". WDAF-FM returned to Top 40 just 4 months later in May 1971. By 1974, WDAF-FM was leaning middle of the road again, and completely automated.