KQED (TV)

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KQED (channel 9) is a PBS member television station licensed to San Francisco, California, United States, serving the San Francisco Bay Area. It is owned by KQED Inc., alongside fellow PBS station KQEH (channel 54) and NPR member KQED-FM (88.5). The three stations share studios on Mariposa Street in San Francisco's Mission District and transmitter facilities at Sutro Tower. KQET (channel 25) in Watsonville operates as a full-time satellite of KQED, serving the Santa Cruz–Salinas–Monterey market. This station's transmitter is located at Fremont Peak, near San Juan Bautista. KQED was organized and founded by veteran broadcast journalists James Day and Jonathan Rice on June 1, 1953, and first signed on the air on April 5, 1954, as the fourth television station in the San Francisco Bay Area and the sixth public television station in the United States, debuting shortly after the launch of WQED in Pittsburgh. The station's call letters, Q.E.D., are taken from the Latin phrase, quod erat demonstrandum, commonly used in mathematics. The station was originally licensed to Berkeley, but changed its city of license to San Francisco on July 24, 1956. In its early days following the station's sign-on, KQED broadcast only twice a week for one hour each day. Despite the very limited schedule, the station was still losing money, leading to a decision in early 1955 from its board of trustees to close down the station.