In 1964, KJSK-FM 101.1 joined KJSK, offering a second outlet; as with several other Heart of the Nation operations, in 1977, the FM changed to beautiful music as KOXI before a 1984 flip to adult contemporary under its present KLIR call letters. An FM station had been provided for in the construction of KJSK's tower in 1947. Alongside the religious programming that served as KJSK's mainstay, the station was known for airing polka music programming.
In 1964, KJSK-FM 101.1 merged with KJSK, providing a supplementary outlet; similar to other Heart of the Nation stations, in 1977, the FM changed to refined music as KOXI before a 1984 change to adult contemporary under its present KLIR call sign. A separate FM station was included during the construction of KJSK's tower in 1947. Alongside the religious programming that comprised KJSK's core content, the station gained fame for broadcasting polka music programs.