KMMX (100.3FM), known as "Mix 100.3", is atop 40 (CHR) radio station licensed toTahoka, Texas, and serving the greaterLubbock, Texas, area. Its studios are located in south Lubbock on Avenue Q west ofI-27, and its transmitter is located south of the city.

KMMX-FM originally signed on as "Mix 104.7" as asoft adult contemporary station. However, the station suffered from weak signal penetration into the Lubbock market. In the 1990s, a frequency swap with another market allowed KMMX to occupy the 100.3 frequency. By May 1997, the station became more of acontemporary hit radio-leaninghot adult contemporary format with live air personalities, using the slogan "A 50/50 Mix Of The 80s & 90s". This was a response to the loss ofKRLB 99.5 "The Music Station", which, as a result of the sale of contemporary hit radio stationKZII-FM to KRLB's parent company, changed formats from hot adult contemporary toclassic rock.

In 1998, KMMX dropped the ".3" from their name to a simplified "Mix 100 - Your Music Fix". In 1999, the station again changed slogans to "The Best Mix Of The 80s, 90s, & Today".

Briefly in 2003, the station used the slogan "Lubbock's New Number One Hit Music Station". For much of the 2000s, Mix 100 was "Lubbock's Pop-Rock", a hybrid adult top-40/hot AC station. Mix 100 shifted formats to mainstream CHR in 2010, rebranding as "Lubbock’s Hit Music Station". In 2015, the station resumed using its full frequency in its name as "Mix 100.3".

Mix 100 became the first radio station in Lubbock to carry the syndicated morning showThe Kidd Kraddick Morning Show in June 2001.

KMMX was the call sign on the side of a car driven by the camera operator of a fictional television news channel 8 station in the episode "On Camera" ofEmergency!.

• KMMX official website
• Facility details for Facility ID 86 (KMMX) in theFCC Licensing and Management System
• KMMX inNielsen Audio's FM station database

33°26′31″N101°52′41″W / 33.442°N 101.878°W /33.442; -101.878

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