KLBK 13 (formerly KDUB), owned by is the CBS network affiliate, serving the entire Lubbock, Texas metropolitan area. KLBK is owned and operated by Nexstar Broadcasting Group and through a local sales agreement the station also provides services to ABC affiliate KAMC Mission Broadcasting.
The station operates on VHF channel 13 at 316 kilowatts and it broadcasts digitally on UHF channel 40 at 0.96 kilowatts under a Special Temporary Authority, however it has filed a construction permit to increase power to 1,000 kilowatts.
The station began its broadcasting operation as KDUB-TV, founded by the late television pioneer W.D. "Dub" Rogers, Jr, putting the station on the air for the very first time on November 13, 1952. It was the first commercially licensed television station between Fort Worth and Los Angeles. It was also the first commercially licensed television station in a medium to small-sized market. Over the next few years, Rogers signed on KPAR-TV in Abilene (now KTXS-TV), KEDY-TV in Big Spring (now KWAB, a satellite of KWES-TV in Midland and KVER-TV in Clovis, New Mexico (now KVIH-TV, a satellite of [[KVII-TV in Amarillo). These stations made up the West Texas Television Network, the first regional television network in the United States.
The station later changed its call letters to KLBK in 1961. Originally the station also carried ABC as a secondary affiliation until 1969 when KSEL-TV (now KAMC) became the local primary ABC affiliate. The other stations in the West Texas Network were sold off to other owners.
KLBK was acquired in late 2003 as part of the Nexstar Broadcasting Group acquisition of Quorum Broadcasting. The station updated its logo and news set on Feb 1st, 2007, dropping the "13" to reflect that it broadcasts in HD but on different channels over the air and on local cable systems.