Playing country and MOR since its inception in 1974, the original call sign was KIEE until changing to KCFX on December 21, 1983.

[2] On September 8, 1990, KCFX swapped frequencies with KMZU in Carrollton, jumping from 100.7 MHz to 101.1 in order to provide a stronger signal to cover the Kansas City area.

In recent years they have started playing some hits from the 1990s by artists like Bruce Springsteen and Scorpions, as well as Collective Soul, Stone Temple Pilots, and Metallica, among others.

The station carried The Bob & Tom Show from March 13, 2006 to February 9, 2007 as its morning drive program.

In March 2009, Slacker, longtime heritage Classic Rock DJ from Kansas City, was installed as the KCFX morning show weekdays from 5 am to 9 am.

On December 5, 2019, it was announced that Entercom's WDAF-FM (106.5) would become the new flagship of the Chiefs radio network with the start of the 2020 season, ending KCFX's 30-year association with the team.

[11] On December 3, 2024, Union Broadcasting began leasing KCFX-HD4 and K279BI from Cumulus to simulcast WHB, putting the station on equal ground with Audacy's KFNZ and KFNZ-FM.