Licensed to Harlingen, Texas, United States, the station serves the Rio Grande Valley area.

Some of the TV personalities such as anchorman Frank "FM" Sullivan and weathercaster Larry James hosted music programs on the station.

Frank's wife Hilda Sullivan would anchor locally produced newsbreaks called "Micronews."

On January 1, 1995, the station changed formats to rock under the direction of Program Director Alan Sells.

On December 15, 2017, Entravision conducted a corporate restructure, firing over half the air staff, including their morning show hosts for over 20 years, Big Al and Charlie.