WCHK-TV

Reserved for the CBS affiliate for Big City
Channel number: 4
Affiliation history:
Spanish-language independent (1954-1990)
CBS (1990-present)
References:
KDFW-TV (1954-1970 / 1990-2003)
WBBS-TV (1970-1987, without the background and colored black)
WCVB-TV (1987-1990)
WBBM-TV (2003-present, with the KTVT-TV "11" symbol from 2004)