KSOU-FM (93.9 MHz) is a radio station broadcasting an adult contemporary format. Serving the Sioux Center area in the U.S. state of Iowa, the station is licensed to Sorenson Broadcasting Corp.

History

The station began broadcasting in 1974 as KVDB-FM, with "VDB" being a subtle reference to its owner, Russell Vande Brake. KVDB-FM was the sister station to KVDB (1090 AM, now KSOU), which broadcast from the same studio. During the day, they had separate programming, but in the evening, an easy listening format was simulcast over both stations.

On August 1, 1989, the station changed its call sign to KTSB; on April 1, 1996, it changed to the current KSOU-FM.