KLRN is a public television station in San Antonio, Texas, broadcasting locally on VHF channel 9 as a Public Broadcasting Service (PBS) member station. It is operated by the Alamo Public Telecommunications Council (formerly the Southwest Texas Public Broadcasting Council). Studios are located on Broadway Street in downtown San Antonio, with the transmitter located on Foster Road in the eastern part of the city.
The station also serves as the default PBS member station for the Laredo market, which does not have a PBS station of its own.
It began broadcasting on September 10, 1962; owned by the Southwest Texas Public Broadcasting Council. Unusually for stations of that time, it was licensed to serve two markets—San Antonio and Austin. This was in part because Austin had been allocated UHF channel 18 for noncommercial use, and UHF was not considered viable at the time. The transmitter was located roughly halfway between San Antonio and Austin on land just north of New Braunfels, a major San Antonio suburb. The main studio was located at the Jesse H. Jones Communications Center in Austin, on rented space at the University of Texas. San Antonio operations were based at a satellite studio at Cambridge Elementary School until 1968, when it moved to rented space at the Institute of Texas Cultures on the HemisFair grounds.
In 1979, KLRU was brought online in Austin as a satellite of KLRN. In 1984, the Southwest Texas Public Broadcasting Council severed the electronic umbilical cord between its two stations and activated a new KLRN tower in San Antonio. It also formed separate governing boards for the two stations. In 1987, the two stations finally went their separate ways when the Southwest Texas Public Broadcasting Council split itself into two community organizations, with KLRN coming under the Alamo Public Telecommunications Council. In 1994, it moved to its current studios, a renovated Buick dealership.