KSGN is a non-commercial based radio station located in Redlands, California, broadcasting to the Riverside, San Bernardino, Palm Springs, Banning areas on 89.7 FM and airs a Christian Contemporary music format. It was first launched in 1958 as KPNF which was formed by three professors at La Sierra College in Riverside. The station has changed its call letters over the years. Other call letters included KSDA, KLLU and finally KSGN. The station's business office and studios were located on the campus of La Sierra University from 1958 to 2005. In mid 2005 KSGN relocated its business office and studios to a location in Redlands just north of Interstate 10.