, during the cleanup of the
Exxon Valdez oil spill in 1989. 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 from 1987 until its dissolution in 2017 amid a crackdown on similar charities from the
Canada Revenue Agency. 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. After the
Rescissions Act of 2025 was passed, Cascade PBS lost $3.5 million in annual federal funding and laid off 17 staffers as a result. ==KYVE history==