"KCNS is a digital television station in San Francisco, California owned by Multicultural Broadcasting. It carries programming from the Retro Television Network on its main channel, and programming from Sino TV and Saigon TV on its subchannels. The station operates on 39 digital, covering the entire San Francisco Bay Area."

KCNS began as KUDO-TV in 1968, broadcasting financial programming in the mornings and early afternoons. On October 3rd, 1971, the station went dark and was acquired by Faith Center at a cheap price the next day and returned to air as KVOF-TV, broadcasting for 15 more years. The station lost its FCC license after Faith Center refused to disclose its private donor records to the FCC. The current KCNS license began broadcasting on January 6th, 1986 as KWBB. The station was later sold to Global Broadcasting Systems, changing its call sign to KCNS and switching to Chinese and Filipino programming. On January 5th, 1998, KCNS switched to Shop at Home Network which lasted until June 21st, 2006. KCNS switched to Jewelry Television, then two days later started broadcasting a mixture of both Shop at Home and Jewelry Television. After being bought by Multicultural Television, KCNS started broadcasting Chinese language programming in Mandarin and Cantonese, under the “Sino TV” banner daily from 6:00pm to 12:00am, including news programs in both Mandarin and Cantonese.

-taken from wikipedia