KSL’s predecessor KZN first signed on the air on 6 May 1922. The station changed its calls to KSL in 1925 and has been using them every since. It is licensed to Salt Lake City, Utah and operates on 1160 kHz. It currently simulcasts its programming on KSL-FM on 102.7 MHz. From its beginning it has been owned by the Church of Jesus Christ of Latter-day Saints. It is the oldest radio station in Utah.

The station has aired the program Music and the Spoken Word since 1929 making it one of the longest running radio programs in the world. During the 1960’s and 1970’s, KSL aired the overnight talk show hosted by Herb Jepko.

KSL is synonymous with Utah in radio DXing circles. The station puts out a very strong signal at night and has been heard virtually all over the world. They were heard at night almost every time tried when I lived in Spokane. They replied to my three reception reports with three separate QSL cards.