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KXII, VHF digital channel 12, is a CBS-affiliated television station located in Sherman, Texas, United States which also serves Ada and Ardmore, Oklahoma, and Denison, Texas. The station is owned by Gray Television. KXII maintains studios located on Texoma Parkway (SH 91) in Sherman, and its transmitter is located southwest of Madill, Oklahoma. The station's signal is relayed on low-power translator station KXIP-LD (channel 12) in Paris, Texas. ==History== The station first signed on the air on August 12, 1956 as KVSO-TV, originally licensed to Ardmore, Oklahoma. The station's original owners also owned local radio station KVSO (1240 AM) and the ''The Daily Ardmoreite'' newspaper. Channel 12 originally operated as an NBC affiliate; unable to afford a network feed, station engineers switched to and from the signal of WKY-TV (now KFOR-TV) in Oklahoma City whenever NBC programming was being broadcast. The station often carried some of WKY's non-network programming as well. In late 1958, the station was sold to Texoma Broadcasting and its call letters were changed to KXII (signifying the Roman numeral for 12). In 1959, a tornado collapsed the station's transmission tower – located north of Ardmore in the Arbuckle Mountains at a site formerly used to transmit KVSO-FM – sparing the life of transmitter engineer Chester Rollins. A new transmitter and tower was later constructed near Madill, about southeast of Ardmore in order to provide better reception to viewers in Durant and across the Red River to the Sherman/Denison, Texas area. Beginning in 1960, the station became a primary NBC affiliate, and added a secondary affiliation with CBS. CBS fare on channel 12 consisted mainly of daytime programs and sports coverage (such as NFL football). During the 1960s and early 1970s, most CBS programming was fed to cable subscribers in the Texoma area via affiliates in surrounding markets including KWTV in Oklahoma City, KAUZ-TV in Wichita Falls, and KRLD-TV (now KDFW-TV, currently a Fox owned-and-operated station) in Dallas-Fort Worth. KXII's direct competitor, Ada-based KTEN (channel 10) was a primary ABC affiliate, but also carried NBC programming through a secondary affiliation. Though KXII and KTEN were considered direct competitors, both stations had considerable differences in fringe signal coverage for many years due to the distances between the two stations' transmitters at Madill and Ada. This meant that viewers within the a radius of KXII's transmitter at Madill, including Ardmore and Durant, were actually on the southern fringe of KTEN's broadcast signal, which resulted in poorer over-the-air reception on channel 10 than channel 12. Channel 10 did not even reach viewers in the Sherman-Denison area or other portions of north Texas served by KXII. Similarly, KTEN's city of license, Ada, was in the northern fringe of KXII's signal coverage, resulting in poor over-the-air reception of channel 12. To better compete with KXII, KTEN moved its transmitter in 1984 from Ada to a location near Bromide, which enabled better over-the-air reception to locations in far southern Oklahoma near the Red River and now expanded to serve Sherman, Denison and other cities in north Texas. KTEN also adopted KXII's mode of operating more than one studio by adding operations in Ardmore and Denison, and later relocating the main studios from Ada to Denison. Starting with the 1974-1975 fall season, KXII's program schedule included a larger proportion of CBS programming including most of the network's daytime shows, many prime-time programs and most of its sports programming. This made channel 12 a hybrid station with almost half the programming of both NBC and CBS airing for a few years. As KXII shifted its primary source of network programming from NBC to CBS in the mid-1970s, KTEN added a larger proportion of NBC programs to its daytime and primetime schedule, becoming a similar hybrid ABC and NBC station in the process. In 1977, channel 12 shifted its primary network affiliation to CBS and became an exclusive affiliate of the network in 1985 when the last NBC program on KXII's schedule, ''Today'', was replaced by ''CBS This Morning''. ''Today'' then moved to KTEN, which shifted its primary affiliation to NBC, eventually becoming that station's exclusive affiliation in 1998. Since the late 1990s, the two-station Sherman/Ada market has been represented entirely by one-network stations (not including digital subchannels). Throughout 2006, the station celebrated its 50th anniversary. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「KXII」の詳細全文を読む スポンサード リンク
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