KTDO, virtual channel 48 (UHF digital channel 26), is a Telemundo owned-and-operated television station licensed to Las Cruces, New Mexico, United States and also serving El Paso, Texas. The station is owned by the Telemundo Station Group subsidiary of NBCUniversal (itself a subsidiary of Comcast, which also owns the local cable system in Las Cruces). KTDO's studios are located on Carnegie Avenue in El Paso, and its transmitter is located atop the Franklin Mountains on the El Paso city limits.
The station first signed on the air November 18, 1984 as KASK-TV; it originally operated as an English-language independent station. The TV station was an outgrowth of KASK-FM 103.1.
KASK-TV went off the air in October 1987 when it was bought by Bayport Communications. Bayport was approved to relocate the tower to a new site near Anthony, New Mexico, and increase power from 74,000 watts to the maximum 5 million. Channel 48 was sold to Robert Muñoz and reemerged on June 13, 1990 as KZIA. The station was added to the El Paso cable system in 1991. Lee Enterprises bought the station in 1993 for $440,000, after a separate $900,000 sale fell through the year prior. "Z48" became a charter affiliate of the United Paramount Network (UPN) upon the network's launch on January 16, 1995.
Change to Telemundo
In 1997, the station's calls were changed to KMAZ ahead of a January 16, 1998 change to Telemundo and Spanish-language programming. The change was made to improve the station's financial position and because management felt the market was ready for a second Spanish-language station on the United States side of the border. In 2001, the station's call letters were changed to KTYO. In 2004, the station was purchased by the Arlington, Virginia-based ZGS Group for $11.8 million; ZGS subsequently converted the station into a Spanish-language outlet as the market's Telemundo affiliate and changed its call letters to KTDO. As a result of the switch, UPN (which ceased operations in September 2006 and merged its programming with competing network The WB as part of a joint venture between CBS Corporation and Time Warner to form The CW) did not have a full-time affiliate in the El Paso market for the remainder of the network's run, with its programming being relegated to a secondary affiliation on KKWB (channel 65, now KTFN) until it switched to TeleFutura in January 2002.
On December 4, 2017, NBCUniversal's Telemundo Station Group announced its purchase of ZGS' television stations, including KTDO. The sale was completed on February 1, 2018.