The station went on the air as KCDR in 1965 on 88.1 MHz. The call letters and frequency changed to KGSU-FM on 90.1 MHz on September 30, 1980. In 1982, it changed to the current frequency of 91.1 MHz. On December 23, 1994, the station changed its call sign to the current KSUU. This was done so the call would reflect the name change of the school which owns the station.[3]