Сиэтл және Такома аймағындағы PBS телеарнасы

PBS member station in Seattle

KCTS TV is the primary PBS member station for the Seattle–Tacoma market alongside Tacoma licensed KBTC TV (channel 28), owned by Bates Technical College. Through PBS's Program Differentiation Plan (PDP), KCTS TV carries the majority (75%) of the network's programs, with KBTC TV carrying the remaining 25%. Originally owned and operated by the University of Washington, KCTS TV became a community licensee in 1987. In 2015, it was announced that the station would merge with Crosscut. com to form Cascade Public Media. KYVE (channel 47) in Yakima operates as a semi satellite of KCTS TV, serving as the PBS member station for the western portion of the Yakima–Tri Cities market. KYVE's transmitter is located on Ahtanum Ridge.

KCTS was founded by the University of Washington (UW), the station's original licensee. It was a sister station to KUOW FM, which UW put on the air in 1951. It was originally to have gone on the air under the callsign KUOW TV, but it instead assumed the callsign KCTS, meaning Community Television Service, to avoid singling out a member of its initial sponsoring group. Sponsors at the time included UW, Seattle Public Schools, King County Public Schools, Seattle University, Seattle Pacific College, and the Seattle Public Library. A studio for KCTS was set up on the UW campus at 15th Avenue NE and NE Campus Parkway, with equipment donated by KING TV owner Dorothy Bullitt. KCTS began broadcasting at 7 p. m. on December 7, first airing a five minute program preview hosted by UW professor and program director Milo Ryan before switching to an abridged performance of Felix Mendelssohn's Elijah by the Seattle Pacific College Choir. Initially, it aired only two preview programs weekly; however, regular programming did not commence until nearly a month later on January 5, 1955, with the inaugural program featuring Governor Arthur B. Langlie as principal speaker. It had three telecast periods throughout the afternoon and evening during weekdays. During the 1950s and 1960s, KCTS primarily supplied classroom instructional programs used in Washington State's K–12 schools, plus National Educational Television (NET) programs. Outside of schoolrooms, KCTS's audience among the general public was somewhat limited, and most programming was in black and white until the mid 1970s (although the station did install color capability in 1967). In 1970, NET was absorbed into the newly created Public Broadcasting Service (PBS), which commenced broadcasting on October 5. As a PBS member station, KCTS began offering a vastly enhanced scope of programming for the general public, including British programming. Thanks to a major fundraising drive during the mid 1980s, KCTS moved to new studio space on the Seattle Center campus in October 1986 and would remain there until 2024. In 1987, UW spun off KCTS, and the station became a community licensee, thus separating it from KUOW FM. KCTS is seen throughout southwestern British Columbia on local cable systems, as well as across Canada on the Bell Satellite TV and Shaw Direct satellite providers, as well as on many other Canadian cable TV systems. By 1996, a third of KCTS's audience resided in British Columbia; after it was removed from its channel number (9) on basic cable systems in the province, donations declined by $1.2 million. KCTS continues to receive financial support from its Canadian audience, which was processed through the Pacific Coast Public Television Association until its dissolution in 2017. KCTS switched to a digital transmission signal from its Capitol Hill tower in March 1999, becoming the third television station in the Seattle area to make the transition. The station had been an early adopter of high definition television programming and used its new digital signal to simulcast several programs. In January 2016, as part of a broader strategy to redefine itself as a content provider for various platforms other than television, the name of the licensee, KCTS Television became Cascade Public Media; its properties included KCTS TV, Crosscut, a non profit daily news site, and Spark Public. Cascade Public Media currently consists of KCTS, Crosscut and Piranha Partners. In July 2022, Cascade Public Media purchased Childhaven's longtime facility in First Hill for $23 million and announced that it would move its operations there by the end of 2023; the organization stated on its website that the city of Seattle declined to renew the 40 year ground lease for the Seattle Center facility. It retained architectural firm JPC Architects, general contractor Abbott Construction, and project manager OAC Services as part of a capital campaign to purchase and renovate the property. In October 2023, KCTS announced that it and Crosscut would merge under the new unified brand of Cascade PBS. It also announced plans for a new streaming app, expanding on a service that launched in 2020, that would be used by other PBS member stations. KCTS and Crosscut moved into the First Hill facility in January 2024, with both subsequently adopting the Cascade PBS name on March 1.

In 1994, KCTS merged with KYVE, which has served central Washington since November 1, 1962. However, this was not the first time that the two stations had partnered together; during the early 1960s KYVE's engineers switched to and from KCTS's signal until the station's owners, the Yakima Board of Education, got enough funding for the station to be self supporting. The station became a community licensee in 1984, but found the going difficult until its merger with KCTS. KYVE did produce a few local programs, including the KYVE Apple Bowl with host Tony Leita, a high school quiz competition; Northwest Outdoors with Wally Pease, an outdoors program; and Country Roads with Gwyn Gilmore, a showcase of country music videos. During the mid 1990s to the early 2000s, some programs included a combined "KCTS/KYVE" visual bug in the lower right corner of the screen, indicating they were simulcast to both markets. However, since the early 2000s, KYVE has largely been a straight simulcast of KCTS, so the screen bug was dropped. Combined, the two stations serve 2.4 million people, accounting for almost two thirds of Washington state's population. Its former studios were located at Braeburn Hall at Yakima Valley Community College. But since the start of the millennium, local origination was severely reduced, and eventually, Braeburn Hall was torn down. KYVE later moved to a small office on 2nd Street (at the bottom of the Larson Building). This office is now home to the ticket office and administration for the Yakima Valley Pippins baseball team, and aside from the Ahtanum Ridge transmitter and the legal hourly station ID, KYVE no longer has any presence in Yakima.

KCTS is perhaps best known for producing/distributing the popular PBS Kids show Bill Nye the Science Guy, as well as other programs such as Students by Nature (not a PBS distributed program), The Miracle Planet, cooking shows by Nick Stellino, Chefs A' Field, and the annual televised high school academic competition KYVE Apple Bowl. KCTS was among a number of PBS member stations to air the controversial "Sugartime!" episode of Postcards from Buster, a spinoff of Arthur about a cartoon rabbit named Buster Baxter, who travels the country with his father and interacts with children from different cultures and in different family structures. The episode had been removed from PBS Kids Go! 's national broadcast schedule after PBS received a critical letter from then newly appointed Education Secretary Margaret Spellings, who was upset that Buster was visiting a Vermont family headed by two women. WGBH, the Boston based PBS affiliate and original producer of the program, subsequently made the episode available to stations that still wished to air it on an individual basis.

KCTS TV shut down its analog signal, over VHF channel 9, on June 12, 2009, as part of the federally mandated transition from analog to digital television. The station's digital signal relocated from its pre transition UHF channel 41 to VHF channel 9.