However, before the 1950s, San Francisco was also considered a West Coast flagship market for the networks, with much of the CBS and NBC network's West Coast news programming originating from that city. This is seen the calls of CBS's KCBS (AM) being based in their original city of San Francisco instead of Los Angeles (the use of KCBS-TV in Los Angeles only dates back to 1984), while KNBR (which was subsequently sold to another party by NBC in 1987) was formerly known as KNBC before the network moved those calls to KRCA-TV in Los Angeles in 1962.