The two stations share studios on West Expressway (I-2/US 83) in Harlingen; KGBT-TV's transmitter is located in La Feria, Texas.

KGBT-TV was the first television station established on the American side of the Rio Grande Valley and is the oldest still in operation.

The station was owned by the Harbenito Broadcasting Company, controlled former Valley Morning Star publisher McHenry Tichenor, and became an affiliate of the CBS Radio Network in 1943.

[8] Channel 4 remained under Tichenor ownership for more than 30 years and was the traditional ratings leader in the Rio Grande Valley for news.

In 1986, Tichenor sold KGBT-TV to Draper Communications of Salisbury, Maryland, which at the time owned WBOC-TV in that city and KOAM-TV in Pittsburg, Kansas.

[14] Shortly afterwards, on March 27, 2006, KGBT-TV was sold again to Barrington Broadcasting as part of a group deal to acquire 11 other Raycom stations.

[18] KGBT-TV's CBS affiliation, news department, and syndicated programming moved to KVEO's second subchannel the next day.

On-air operations mostly remained unchanged, though viewers were asked to rescan their sets in order to continue watching CBS.

The KGBT-TV tower in La Feria was brought down on March 8, 2024, after two of its 24 guy wires snapped, causing the mast to lean.

The tower situation led to the evacuation of nearby homes as well as the cancellation of classes in the La Feria Independent School District.