It has studios located in the Southtown portion of downtown San Antonio, and its transmitter is based outside Elmendorf, Texas.
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KWEX-TV began as KCOR-TV in 1955, named after its radio sister station, which itself was named for Raoul CORtez, the owner and pioneer of the first full-time Spanish-language radio and television stations in the United States by the Radio Corporation of America (RCA).