When the FCC granted a construction permit to build a new FM station in Freeport, it was given the call signKGUL. By the time the stationsigned on the air on October, 1989, the call letters were KGLF-FM. KGLF-FM was owned by Freeport Broadcasting. Freeport sold the station for $2 million to U.S. Radio in 1990. The new owner changed the call letters to KJOJ. In 1991, the call sign changed to its current KJOJ-FM as 880 AM in Conroe took the KJOJ call sign, which had been on 106.9 FM for many years under the ownership of televangelistJimmy Swaggart. Swaggart sold 106.9 to U.S. Radio after the sex scandal that caused him to leave his ministry for some time. The simulcast with 98.5 FM began in 1993 after Swaggart sold 103.3.
When "Yo 1590 Raps!" went on the air on KYOK1590 AM, after flipping from Urban Gospel to Rap music, in February 1991, the FM station's format changed back to "Y98.5 Is Back, playing the best variety of Hits and Dusties." In 1993, 103.3 KJOJ-FM and KYOK began simulcasting as "Y98.5". KJOJ-FM has been simulcasting since. The station started playing Smooth Jazz on Sundays. It proved so popular that on March 8, 1995, the simulcast flipped full time to Smooth Jazz, known as "Smooth FM 98.5 and 103.3".
On February 24, 1997, after stunting with continuous play of the song Kiss by Prince, the station's format changed to Rhythmic Contemporary as "Kiss 98-5, Kiss Again 103-3". The stations targeted the Hispanic youth market playing heavy doses of Latin Freestyle and House music, mimicking the style of WPOW-FMPower 96 in Miami. In June 1998, the "Kiss 98-5, Kiss Again 103-3" format was tweaked again to rival 104.1 KRBE, by playing Rock and Pop based Top 40. On January 1, 1999, the station jumped on the Rhythmic Oldies bandwagon as "98.5 The Jam". The call letters changed to KTJM, to represent "Texas Jam." During 1999 to 2001, the station's moniker changed to "Houston's Jammin' Oldies" and then to "Houston's Jammin' Hits".
In July 2001, the station was bought by Liberman Broadcasting of Burbank, California. The ownership changed brought a flip to the current Regional Mexican "La Raza" format. In 2019, Liberman ran into financial problems and declared Chapter 11. After reorganization, the corporate name changed to Estrella Media.