KDSN-FM (104.9 MHz) is a commercial radio station that serves the Denison, Iowa area. The station broadcasts an adult contemporary format. According to the KDSN website, the FM station began broadcasting at 107.1 FM in 1968. The transmitter and broadcast tower are located on the northeast side of Denison. According to the Antenna Structure Registration database, the tower is 74 m tall with the FM broadcast antenna mounted at the 72 m level. The calculated height above average terrain is 92 m. The FM antenna array is a FML-2E-HW manufactured by ERI. KDSN-FM & KDSN stations carry a large amount of local news and farm information, with a mix of adult contemporary and classic rock on FM and country and polka on AM. They deliver the only city-grade signals to Denison. In September 2018, UNW Media divested the station to JC Van Ginkel, James Field, James Van Ginkel, John Van Ginkel, & Rodney Christensen's Crawford County Broadcasting. The majority owners also operate KNOD-FM, Harlan Iowa and KJAN, Atlantic Iowa. On January 14, 2020, the signal changed from 107.1 to 104.9 as planned in the transfer agreement between the current owners and UNW Media.