KESS (93.3MHz, "Estereo Latino 93.3") is acommercial radio station broadcasting a Spanish languageNortenoradio format. KESS islicensed toPort Arthur, Texas, and primarily serves the Houston-Beaumont-Port Arthur area. It is owned by theUforia Audio Network (DBA Univison Houston Local Media) and previously carried programming from the co-ownedTUDN Radio Network. The station airs Spanish-language broadcasts of theHouston Astrosbaseball team, theHouston Rocketsbasketball team, and theHouston Dynamo FCMLS soccer team.

The radio studios are in the Univision Building at 5100 Southwest Freeway inUptown Houston and thetransmitter is inDevers, Texas. KESS has aneffective radiated power (ERP) of 100,000 watts, currently the maximum for FM stations.

KQBU-FM first began broadcasting on September 11, 1959, under thecall sign KFMP-FM, and originally owned by Henry Diehl, under the licensed business name of Triangle Broadcasting Company. It was sold to Felix and James Joynt (d.b.a. KWEN Broadcasting Company) on June 18, 1969, becoming the FM sister to 1510KCAW Port Arthur, and having its own callsign changed to KCAW-FM.

The call sign was changed to KYKR-FM on October 1, 1974, rebranding as "Kicker 93" and beginning the legacy of KYKR on the FM dial in the Triangle. Steve Hicks purchased the AM & FM facilities in 1980.

In 1989, Hicks proposed to move the FM signal off of the AM's tower inVidor, Texas, and relocate it further west toDevers, Texas in order to rimshot Houston with its signal. A Construction Permit for the move was granted on October 10, 1989, and was licensed for operation at the new site on October 23, 1991.

On July 2, 1992, the call sign was changed to KLTN, after the move from Port Arthur to Devers, as "Estereo Latino 93.3". On June 25, 1998, the station was then changed to "K-Love 93.3 y 104.9", the first simulcast with 104.9 FM (nowKAMA-FM) in Houston, and assigned the new calls of KOVE-FM.

On July 30, 2001, the call sign was changed to KQBU-FM with the moniker "La Que Buena 93.3" for the first run of the Regional Mexican format on this frequency.

On December 4, 2007, KQBU "Que Buena 93.3", aRegional Mexican outlet, became the new home of the "Party", which relocated from 104.9 to make room for the newly launched KAMA "Amor 104.9". After that switch was made, "Party 93.3" added the syndicatedBig Boy's Neighborhood, with Big Boy, Luscious Liz, and Tattoo. The KPTY call sign was officially moved to 93.3 FM on December 11, 2007.

On July 5, 2008, the station stopped targeting the Greater Houston area. Everything that the station had that referenced Houston were immediately dropped, including its slogan, and moved its broadcasting studios from Southwest Houston to Beaumont. The move was noticed in the ratings, as KPTY, which had good numbers in the Houston Arbitrons, began to dip after the frequency switch. In the process, it lost a fraction of listeners due to the 93.3 signal not covering all of the Houston metro.

On February 27, 2009, Univision's Houston cluster announced that it was letting go most of its employees. KPTY would unfortunately be the biggest casualty of this move as the entire airstaff was pink-slipped and the station went jockless. At 10 P.M. on February 28, the station went live for a nightclub broadcast as scheduled. Many of the personalities that saw the format through its run from its early days at 100.7 and then later on 104.9, were on hand to send off "Houston's Party Station."

At the end of the live broadcast at 2 A.M., the station returned to Regional Mexican and its formerQue Buena 93.3 moniker on March 1. The call sign was officially changed back to KQBU-FM on March 10, 2009.

On December 1, 2017, KQBU-FM changed the format from Regional Mexican to a simulcast of Spanish CHR-formattedKAMA-FM 104.9 FM Deer Park.^[2] KQBU-FM's change provided a Spanish CHR format to theGolden Triangle as well as serving the northern, eastern, and southeastern areas from Houston, which the 104.9 signal cannot reach.

On September 27, 2021, KQBU-FM changed the format from a simulcast of Spanish CHR-formatted KAMA-FM to a simulcast of Spanish sports-formattedKLAT 1010 AM Houston, branded as "Your Station Of Champions".^[3] The simulcast lasted until KLAT was split of from KQBU-FM in favor of changing to a Spanish AC/Regional Mexican format known as “10-10 AM” in mid-December 2024, which KQBU-FM remains as a TUDN Radio Affiliate after the split.

On October 8, 2025, KQBU-FM changed their format from Spanish sports to Norteno, branded as "Estero Latino 93.3" under new KESS call letters.^[4] It has reverted to its original name from 1992 to 1998 after the format moved toKLTN, then dropping the name in 2018. The station focuses on 90s Norteño and Cumbias. the current KQBU callsigns moved to 107.1 Benbrook, TX.

• Facility details for Facility ID 25583 (KQBU-FM) in theFCC Licensing and Management System
• KQBU-FM inNielsen Audio's FM station database

• HD Radio stations
• Hispanic and Latino American culture in Houston
• Spanish-language radio stations in Texas
• Radio stations in Texas
• Univision Radio Network stations
• Radio stations established in 1959
• 1959 establishments in Texas
• Radio stations in Greater Houston
• Port Arthur, Texas

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