A construction permit was granted in 2000 by the Federal Communications Commission with the call sign KCHY, broadcasting 200 watts covering Hope, North Dakota. Clear Channel Communications paid $800,000 for the CP for KCHY in 2002, and changed the call sign to KDAM. KDAM signed on with 100,000 watts in October 2002, stunting with clips of songs of all genres, billing itself as "Quick 104.7", and playing ten songs per minute while other stations play ten songs per hour. The modern rock format known as "The Dam 104.7" debuted days later. It became popular, and gained larger Arbitron ratings than rival heritage active rock station KQWB-FM "Q98" at times. Despite a rimshot signal, "The Dam" also attracted more than 2% of radio listeners in the Grand Forks, North Dakota market, somewhat competing with co-owned active rock station KJKJ "KJ 108".
104.7 The Wolf
KDAM began stunting as "Quick 104.7" again, and later flipped to a country music format as "104.7 The Wolf" in December 2005, competing with KVOX-FM "Froggy 99.9". The format flip caused controversy with listeners, and several online petitions were created to bring The Dam back. The Wolf was not as successful as "The Dam", and attracted less than 1% of listeners in the Fargo-Moorhead Arbitronradio market. On September 28, 2006, it was announced that KDAM and the other Clear Channel stations in Fargo were being sold to Radio Fargo-Moorhead, Inc., a company owned by Fargo native James Ingstad. Ingstad had previously sold his stations in 2000, though KDAM didn't sign on until 2002. The sale was approved by the FCC on January 19, 2007.
The station began airing Christmas music as a stunt on November 9, 2007 along with KEGK. On November 26, 2007, the station changed to an oldies/classic hits format with the name "Mojo 104.7", and changed its call sign to KMJO. Starting in April 2010, Mojo added more 80's music to their playlist.
On September 12, 2010, KMJO flipped to "104.7 Popster FM" with an adult hits Effective April 30, 2013, Ingstad's Fargo-Moorhead cluster — KMJO and sister stationsKBVB, KFGO, KRWK, KVOX, and WDAY-FM — was sold to Midwest Communications.
104.7 Mix FM
On September 10, 2013, KMJO flipped to The New 104.7 Mix FM, Playing Fargo-Moorhead's Best Variety. The airstaff consisted of Jeff Left, Ryan Kelly, Bo Janssen.
104.7 Duke FM
On July 22, 2015, KMJO abruptly flipped to classic country as "104.7 Duke FM", as the AC format abruptly moved to KRWK.