See also KFAN Sports Radio NetworkKFSP (1230 AM) is a radio station licensed to Mankato, Minnesota and serving the greater Mankato area and the Minnesota River Valley with a sports format. The station is an affiliate of the regional KFAN Sports Radio Network and Fox Sports Radio. Founded in the 1930s, KFSP is the oldest radio station in Mankato.The station is currently owned by Linder Radio Group, which acquired the then-KYSM from former owner Clear Channel Communications.