KCJK-FM (branded 105-1 Jack FM) is a variety hits station that serves the Kansas City metropolitan area. Broadcasting at a frequency of 105.1 MHz, KCJK adopted its Jack FM format in October 2004, adding 1970s music to the playlist of its predecessor, the retro hits station E-105 (with call letters KFME). Its transmitter is located in Independence, Missouri.
105.1 was originally the frequency for KKJO, now at the frequency of 105.5. KFME debuted in 2001 from its tower in Garden City, Missouri (south of Kansas City) to modest results. After Susquehanna assumed ownership, Jack FM was introduced, initially with considerable success. Like other Jack stations, KCJK is nearly jockless and sticks 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.