KLDO-TV, virtual channel 27 (UHF digital channel 19), is a Univision-affiliated television station licensed to Laredo, Texas, United States. Owned by Entravision Communications, it is sister to two low-powered, Class A stations: UniMás affiliate KETF-CD (channel 39) and Fox affiliate KXOF-CD (channel 31). The three stations share studios on Bob Bullock Loop in Laredo; KLDO-TV's transmitter is located in Ranchos Penitas West, Texas.
KLDO signed on in December 1984 as an ABC affiliate owned by Panorama Broadcasting, making Laredo one of the last markets with full network service. However, the station found the going difficult. Laredo was just barely large enough for three television stations, and its close proximity to the Mexican border limited its potential audience. Prior to the launch of KLDO, KGNS-TV aired some of ABC's network programs as a secondary affiliate. In addition, the network's affiliates in markets adjacent to Laredo (KIII in Corpus Christi and KSAT-TV in San Antonio) became available on cable systems in the Laredo market a few years prior to the station's sign-on.
The station switched to Telemundo on October 31, 1988. It became the first all-Spanish station on the American side of the Laredo/Nuevo Laredo area. Laredo would not regain a locally-based ABC affiliate until July 2014, when KGNS-TV added the network on a digital subchannel; as a result, cable systems in southwestern Texas would carry both KIII and KSAT (the latter being carried in most areas) as the network's default affiliates for the Laredo market.
Entravision bought the station in 1997. The following year, following the openings of TV Azteca stations XHLAT-TV (Azteca 7) and XHLNA-TV (Azteca 13), Entravision changed KLDO's affiliation to Univision; Telemundo at the time used to get most of its programming from TV Azteca (though most of its programming did not air until months later), and most of Entravision's stations are affiliated with Univision.