WPMT, virtual channel 43 (UHF digital channel 36), is a Fox-affiliated television station licensed to York, Pennsylvania, United States, and serving the Susquehanna Valley region (Harrisburg–Lancaster–Lebanon–York). The station is owned by McLean, Virginia–based Tegna Inc. WPMT's studios are located on South Queen Street in Spring Garden Township (with a York mailing address), and it shares transmitter facilities with Harrisburg-licensed PBS member station WITF-TV (channel 33) in Susquehanna Township. It is also rebroadcast on a translator, W34FM-D in Chambersburg, Pennsylvania. History Early history The station first signed on the air on December 21, 1952, as WSBA-TV, originally operating as an ABC affiliate. It was owned by the Susquehanna Radio Corporation, a subsidiary of the Susquehanna Pfaltzgraff conglomerate, along with radio station WSBA (910 AM). It was one of the first commercially licensed UHF television stations in the United States, signing on the air just over three months after KPTV in Portland, Oregon which originally broadcast on channel 27 when it signed on in 1952, before moving to VHF channel 12 five years later. This makes WPMT the second-oldest continuously broadcasting UHF station in the country, only behind WSBT-TV in South Bend, Indiana (although WSBT moved from its original channel 34 to channel 22 in the late 1950s, making WPMT the oldest UHF station that broadcasts continuously on the same virtual channel number to this day). In 1963, the station became a CBS affiliate and joined WHP-TV (channel 21) in Harrisburg and WLYH-TV (channel 15) in Lebanon to form the Keystone Network. The three stations provided a strong combined signal with about a 55% overlap. Initially, WHP-TV, WLYH, and WSBA aired the same programming despite separate ownership. By the late 1960s, while all three stations ran most of the CBS programming schedule, WHP-TV ran different local programming during non-network hours, while WLYH and WSBA continued to simulcast for nearly the entire broadcast day. WHP ran CBS shows that WSBA and WLYH preempted, while the latter two stations ran programming that WHP preempted, allowing most of the market to view the entire CBS schedule. All three ran most of the CBS lineup, duplicating over three-quarters of the network's programs. This arrangement was necessary for the days before cable gained significant penetration. In April 1983, Susquehanna sold WSBA-TV to Idaho-based Mohawk Broadcasting, who changed its call letters to the current WPMT. The station signed off in August and returned to the air the following