Signed on as KLBK-FM in August 1966 with 100,000 watts. Station founded by Grayson Enterprises, Inc. as an automated station. The KLBK (AM) announcers recorded announcements for the FM stations, and oversaw the tape players, and the TV engineers watched the transmitter and maintained its operation.
In 1970 the station added a small console and two turntables in a room used as an on the air studio. The format remains as general music, but added a live program each evening with "Music by Misty" hosted by Moda Fincher a.k.a. Misty. In 1976 Chuck Spaugh left KSEL AM-FM and became general manager at KLBK-AM-FM. He changed formats to popular music, simulcasting some parts of KLBK(AM)'s day schedule, using live studio equipment evenings, and automation overnights.
July 9, 1974. Gold 104 oldies format with Keith Simmons, Doug Gregory and Ken Cook. Includes a NBC Radio newscast and Edwin Newman Critic at Large plus commercials for Armour Hot Dogs, Quaker State, Midas, House of Television, Ultra Brite Toothpaste, Pants Plus, Minnesota Buckskins and Buick. [ LISTEN ]
June 14, 1978. The Village People spent a morning show at KFMX with program director Gary DeMaroney. This was 10 days before the release of "Macho Man" which was their first single. Three of the members helped Gary with the news, weather, etc and talked about their group. This was recorded when KFMX offered a light pop format 6 am-7 pm and broadcast disco 7 pm-6 am, about three months before they made the switch to disco full time in the Fall of 1978. Part [ 1 ] [ 2 ] [ 3 ] [ 4 ]
June 14, 1978. The Village People spent a morning show at KFMX with program director Gary DeMaroney. This was 10 days before the release of "Macho Man" which was their first single. Three of the members helped Gary with the news, weather, etc and talked about their group. This was recorded when KFMX offered a light pop format 6 am-7 pm and broadcast disco 7 pm-6 am, about three months before they made the switch to disco full time in the Fall of 1978. Part [ 1 ] [ 2 ] [ 3 ] [ 4 ]
In 1980 the station was sold to Southern Minnesota Broadcasting Company and the AM callsign changed to KSAX (AM), though the FM stayed as KLBK-FM. The studios were moved to 5613 Villa Drive and the FM letters changed to KFMX. The station then moved to the 82nd & Quaker studios as part of Gulfstar Communications (later AM/FM, Inc, then Clear Channel Communications, then Gap Broadcasting, and currently Townsquare Media.)
Here's Al Malmberg spinning the turntable on March 9, 1974. [ LISTEN ] (14:36)
KFMX call letters had also been used in Minneapolis, Seattle, San Diego, Omaha, and probably other markets. It has been on in Lubbock since January 18th 1981.
Before her "Music by Misty" days at KFMX-FM, Moda "Misty" Fincher went to work at KXOL-AM in Fort Worth, where she filed albums and pulled wire reports for sports broadcasts. On March 5, 1955, she was abruptly handed the midnight-to-6 am shift - seven nights a week, no days off, for $40 a week. She could not use her name. 
Over the years, the station has branded itself as "94.5 KFMX-FM, The Home of Rock-N-Roll"; "Pure Rock, 94.5 FMX", "Absolute Rock, 94.5 FMX" and its current "Lubbock's Rock Station". The broadcast booth itself has often been referred to as "Voodoo Central", a name created by Mike Driver and adopted by the rest of the staff. FMX also served as the flagship radio station for Texas Tech Football from 1994-2008.
Mornings are currently hosted by "The RockShow" (Wes Nessman & The Heathen). The RockShow has also been syndicated to Abilene, Texas and Wichita Falls, Texas. The pair received immediate attention after developing a weekly stunt segment called, "Torture Tuesdays" that involved the announcers being beaten like pinatas and other painful and/or violent stunts
Notable broadcasters have worked at the station. Wes Nessman has been at the station on and off since the early-1980s. Mike Driver has hosted the afternoon show on FMX for over 20 years. Dale Dudley and Loris Lowe worked at the station in the 1980s before moving to Austin where they work for KLBJ and KGSR. Brian King worked at the station in the 1970s under previous call letters KLBK. King is now a station owner (KEXX Llano, Tx among others). David Stewart was an announcer for KKAM station, a talkshow host on KFMX, and chief engineer in the 1980s. He spent many years at Tichenor Media/HBC before starting Moving Target Consulting Works. He is a partner in stations KBXJ (FM), KPET (AM), and KWFB (FM) & KXXN (FM).
