NBC

===Canada===

NBC network programs can be received throughout most of Canada on cable, satellite and [[IPTV]] providers through certain U.S.-based affiliates of the network (such as [[WBTS-CD]] in Boston, [[KING-TV]] in Seattle, [[KBJR-TV]] in [[Duluth, Minnesota]], [[WGRZ]] in [[Buffalo, New York]] and [[WHEC-TV]] in [[Rochester, New York]]). Some programs carried on these stations are subject to [[simultaneous substitution]]s, a practice imposed by the [[Canadian Radio-television and Telecommunications Commission]] in which a pay television provider supplants an American station's signal with a feed from a Canadian station/network airing a particular program in the same time slot to protect domestic advertising revenue. Some of these affiliates are also receivable over the air in southern areas of the country located near the [[Canada–United States border]] (signal coverage was somewhat reduced after the [[Digital television transition in the United States|digital television transition in 2009]] due to the lower radiated power required to transmit digital signals).