 KALE began broadcasting in 1950 on AM 900 kHz and was owned by Yakima Broadcasting Corp. KALE had a Top-40 radio format until the early 1980s when it switched to a more adult contemporary format.The station reached its zenith as an AM station during the early to mid-1970s.The station was consistently at or near the top of the age 18-to-49 ratings block (as well as among teens) and frequently led the market in sales billings.