KSTR-DT (channel 49) is a television station licensed to Irving, Texas, United States, broadcasting the Spanish-language UniMás network to the Dallas–Fort Worth metroplex.

Founded by Eldred Thomas, owner of radio station KVTT-FM (91.7, now KKXT), it originally maintained a religious programming format as an affiliate of the Trinity Broadcasting Network (TBN).

On November 27, 1995, veteran television executive Barry Diller announced that he would acquire the Home Shopping Network and Silver King Communications, which owned HSN-affiliated stations in several other larger media markets.

Channel 49 adopted the "CityVision" format first adopted the previous fall by Miami sister station WAMI-TV on that date, converting into a general entertainment independent station; HSN programming remained part of the schedule, however it was relegated to two separate blocks, running nightly from 2 to 5:30 a.m. KSTR's initial lineup under the "CityVision" format began to primarily feature a mix of reality shows (such as America's Funniest Home Videos and Real TV), sitcoms (such as Sister, Sister, The Three Stooges, The Andy Griffith Show and NewsRadio) and talk shows during the daytime and prime time hours, as well as drama series (Knight Rider and The A-Team) on weekend evenings, and movies—under the Star Time Movies banner—during prime time on weekends and on Sunday late afternoons.

Among the prospective buyers for the USA Broadcasting unit was The Walt Disney Company—the corporate parent of ABC, the network affiliated locally with WFAA (channel 8)—which was the original frontrunner to purchase the thirteen-station group.

Univision would utilize the former USA Broadcasting stations to serve as charter outlets of the network, which would cater to bilingual Latinos and young adult males between the ages 18 and 34 that seldom watch Spanish language television other than sporting events.

On September 2, 2001, Channel 49 began incorporating daily, two-hour-long mini-marathons of The Andy Griffith Show and movies to fill part of its schedule for its final months as an English-language station.

[17] In November 2018, KSTR-DT submitted an experimental special temporary authority (STA) to the FCC, to test ATSC 3.0 distributed transmission system (DTS) broadcasting.

[21] Due to ATSC 3.0-capable tuners not being widely available, KSTR-DT began simulcasting its programming on KUVN-DT (49.1 UniMás & 49.3 Grit) and KTXD-TV (49.2 getTV) in February 2019.