Listen to the "105.5 Kool FM" radio station live. The "105.5 Kool FM" studio is located in Chickasha, OK. Callsign: KWCO-FM. Broadcasting region: El Reno to Marlow and Hinton to Lake Thunderbird. Start of broadcasting: 1947. Program format: Classic hits. Musical style: top 40 music charts from the early 1970s to the early 2000s, with music from the 1980s serving as the core of the format. Target audience: 25-80 years old. Audience Reach: 250,000.