This article is about WBKB-TV in Alpena, Michigan. For the stations in Chicago, Illinois that formerly used the call sign, see WBBM-TV and WLS-TV.WBKB-TV is the CBS-affiliated television station for the Northern Lower Peninsula of Northeastern Michigan. Licensed to Alpena, the station broadcasts a high definition digital signal on VHF channel 11 from a transmitter in Alcona County (near M-72) south of Hubbard Lake.