KFCO

On April 1, 2009, "One FM" changed its branding to "Hot 107.1". Competing in the Rhythmic/Top 40 ratings against KONN were KQKS and KPTT.

On December 15, 2009, KONN changed its call letters to KDHT to better reflect its current branding.

The KDHT call letters were on another Denver station in 1993 on 92.5, which is now KKSE-FM, before being dropped and picked up by Emmis Communications for their station in Austin, Texas on 93.3 FM (now KGSR).

On March 30, 2012 at 6 p.m., KDHT flipped to a Dance music format while keeping the same moniker and airstaff in place. The format and playlist consisted mostly of current Dance, Electronica, and remixed Rhythmic/Pop hits. The first song under the dance format was "Bad Romance" by Lady Gaga.[1]

On November 30, 2012, at 3 p.m., after playing "Unforgivable" by Armin Van Buuren, the station began stunting with marijuana-themed music (in reference to the recent legalization of personal marijuana usage in Colorado), branded as "Pot 107.1." The first song on the "Pot" stunting was "Rocky Mountain High" by John Denver.[2] The stunt lasted until 3 p.m. the following Monday, when, after playing "Smoke on the Water" by Deep Purple, "Jack FM" returned to Denver with "a bunch of songs in a row", with "What I Like About You" by The Romantics being the first song played.[3][4] This marks the second time the format/moniker was used in the Denver market, the first time being on KJAC (105.5) from April 2004 until September 2012, when it flipped to ESPN Radio.

On March 24, 2014, at Noon, KDHT changed their format to alternative rock, branded as "107X", launching with 5,000 songs in a row through April 7 of that year.[5] The first song on "107X" was "Anarchy in the U.K." by The Sex Pistols. On March 27, 2014, KDHT changed their call letters to KXDE to go with the "107X" branding. Likely due to the station's rimshot signal, the format never could compete against iHeartMedia's KTCL and KBPI, registering just a 0.4 share in the December 2014 Nielsen Audio PPM ratings.

Just nine months after flipping to "X", on December 24, 2014, at 2:45 p.m., after playing "Cigarette Daydreams" by Cage the Elephant, KXDE began a 15-minute stunt with a loop of "Ludacrismas" by Ludacris. At 3 p.m., KXDE flipped to classic hip-hop, branded as "Fly 107.1", launching with a brief mixshow of all-Run-D.M.C. songs, followed by "Candy Shop" by 50 Cent.[6][7] Just 4 weeks later, on January 16, 2015, KXDE, likely due to copyright infringement problems with the SiriusXM webcast "Sirius XM Fly", rebranded as "Flo 107.1". On January 27, 2015, KXDE changed their call letters to KFCO. By the fall of 2016, KFCO began adding more recent music; by the summer of 2017, KFCO began evolving to Rhythmic CHR with the addition of currents and re-currents, though the station retained a heavy classic hip-hop lean. By June 2018, KFCO shifted completely to a current-based Rhythmic.[8]

On May 22, 2020, at 3 p.m., the station shifted back to Top 40/CHR, and revived the “Hot 107.1” branding. The new direction will continue to have a Rhythmic lean, but will feature more uptempo Rhythmic and Dance pop currents that will distinguish themselves from Mainstream rival KPTT and Rhythmic rival KQKS.[9]