KCJK (branded as "X 105-1") is an alternative rock radio station that serves the Kansas City metropolitan area. Broadcasting at a frequency of 105.1 MHz, the station's transmitter is located in Independence, Missouri. The station's studios are located in Mission, Kansas.
105.1 was originally the frequency for KKJO in St. Joseph, which is now at the frequency of 105.5. KFME ("e105"), with its 1980s hits/Hot AC-hybrid format, debuted on June 18, 2001, with "You Get What You Give" by the New Radicals being the first song. The station was re-licensed to Garden City, Missouri (south of Kansas City). The station had modest results. After Susquehanna assumed ownership, KFME flipped to adult hits, and rebranded as "105.1 Jack FM", on October 7, 2004, at Noon. e105's final song was "Don't Speak" by No Doubt, while Jack FM's first song was "Dancing Queen" by ABBA. KFME would later change call letters to KCJK. Jack FM initially debuted with considerable success. Like other Jack stations, KCJK was mostly jockless and stuck to a computerized playlist, highlighted by segments that include the “No-Request Lunch Hour” and liners chastising drivers who slow down to see accidents in the opposite set of freeway lanes.
KCJK and Susquehanna's properties were acquired by Cumulus Media in May 2006. Upon taking over the station, Cumulus added live disc jockeys, a rare move for an adult hits outlet. Most of the station's air talent were let go in 2013, and KCJK returned to being automated and jockless.
On June 15, 2016, at 7:30 a.m., after playing a block of "end"-themed songs (including "Enjoy the Silence" by Depeche Mode, "In the End" by Linkin Park, "Should I Stay or Should I Go" by The Clash, "Come Sail Away" by Styx, and "Closing Time" by Semisonic, which then culminated with "The Final Countdown" by Europe), KCJK swapped formats with K273BZ/KCMO-FM-HD2, adopting their alternative rock format, and rebranded as "X 105-1." The first song on "X" was "Uprising" by Muse. KCJK will now be in competition with Entercom's KRBZ, who was ranked 6th with a 4.6 in the April 2016 Nielsen ratings report for the Kansas City market (KCJK was ranked 13th with a 3.6 share). The format swap also marks the second time a station in the Kansas City market has used the "X" moniker, the first being KCCX/KNRX from March 1997 to January 1999.