Wikipedia
WBZ-TV, channel 4, is a CBS- owned-and-operated television station located in Boston, Massachusetts, United States. The station is owned by the CBS Television Stations subsidiary of CBS Corporation, and is part of a duopoly with MyNetworkTV affiliate WSBK-TV (channel 38), The two stations share studios and office facilities located on Soldiers Field Road in the Allston-Brighton section of Boston; WBZ-TV's transmitter is located in Needham, Massachusetts on a tower site that is owned by CBS (which is shared with transmitters belonging to WCVB-TV, WGBH-TV, WGBX-TV and WSBK-TV).
WBZ-TV is also one of six local Boston television stations seen in Canada by subscribers to satellite provider Bell TV, and is also seen on most cable systems in Atlantic Canada.