Previously, KNSN was a gospel music radio station, having that format from January 2007 until July 2007. Prior to that format, it had been a KidStar Radio affiliate from July 24, 1996, but that radio network was short-lived and merged with Radio Disney. Before that, KSON had a country music format that was simulcast with KSON-FM 97.3. KSON shares its antenna with KURS. During a heavy rain/wind storm in the end of December 2004, approximately half of the radio antenna tower collapsed and fell, leaving the tower at a height of about 200 feet. It had been 442 feet. The station was sold to Multicultural Broadcasting Inc. on June 1, 2009.
On May 22, 2014, Crawford Broadcasting announced they would acquire KNSN for $1.5 million through licensee Kiertron, Inc. The sale was consummated on July 25, 2014.  KNSN went silent in late-July 2014 in preparation for a new format under Crawford Broadcasting ownership. As a result, El Sembrador moved to KURS.