About KPIX CBS 5KPIX is a television station located in San Francisco, California. It was the first television station to be established in Northern California, and the 49th in the United States. It was initially owned by Associated Broadcasters, a company that also owned the radio station KSFO. The station was initially transmitted from a tower on top of the Mark Hopkins Hotel, but later moved to a shared transmitter tower with KGO-TV, and then to the Sutro Tower in 1973. KPIX's first studio was located in the attic of the Mark Hopkins Hotel.
When it first went on the air, KPIX was affiliated with CBS due to a deal that had been struck between KSFO and the network the previous year. KSFO had previously been affiliated with CBS from 1937 to 1941, but the deal fell through when Associated Broadcasters backed out. When KSFO was still affiliated with CBS, it was originally slated to move to the 740 AM frequency, which was the dial position of San Jose's KQW. However, after KSFO parted ways with CBS, the network moved its Bay Area affiliation to KQW and did not want to give up the advantage of owning the Bay Area's last available 50,000-watt station. After lengthy hearings with the Federal Communications Commission (FCC), KSFO won the 740 frequency, but later decided to stay at 560 and focus on building a television station. In return for the CBS television affiliation for the Bay Area, KSFO traded the 740 frequency to CBS. KQW remained at 740 and CBS changed its call sign to KCBS.