KTJM has an effective radiated power (ERP) of 100,000 watts, the highest permitted for non-grandfathered FM stations in the U.S.

With the tall tower located roughly halfway between Houston and Beaumont, KTJM is able to cover both radio markets.

Afterwards, KPAC-FM became an automated Beautiful Music station, playing instrumental cover versions of popular songs, as well as Broadway and Hollywood show tunes.

The station changed its call sign to KHYS in 1978, flipping to an album rock format after the AM and FM pair were bought by San Antonio based-Clear Channel Communications.

The stations targeted the Hispanic youth market by playing heavy doses of Latin Freestyle and House music, mimicking the style of WPOW Power 96 in Miami.

In July 2001, the station flipped to the current Regional Mexican "La Raza" format after being bought by Liberman Broadcasting.