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KDDX (101.1 FM, "X Rock") is a radio stationlicensed to serve Spearfish, South Dakota. The station is owned by Riverfront Broadcasting, LLC. It airs an active rockmusic format. With a 100,000 watt signal on a nearly 1,800 foot tall tower, the station covers much of western South Dakota (including Rapid City), and the Gillette/Northeast Wyoming area.
The station was assigned the KDDX call letters by the Federal Communications Commission on April 28, 1995.[1]