Canadian Broadcasting Corporation

=== 2011 transition to digital television ===
{{see also|Digital television in Canada|List of defunct CBC and Radio-Canada television transmitters}}
[[File:RCI Tantramar.jpg|thumb|right|[[Radio Canada International]] transmitter site ([[CKCX]]) in [[Sackville, New Brunswick]] in 2009. The site was closed in 2012.]] 
The CRTC ordered that in 28 "mandatory markets", full power over-the-air analogue television transmitters had to cease transmitting by August 31, 2011. Broadcasters could either continue serving those markets by transitioning analogue transmitters to digital or cease broadcasting over-the-air. Cable, IPTV, and satellite services are not involved or affected by this digital transition deadline.

While its fellow Canadian broadcasters converted most of their transmitters to digital by the [[Digital television in Canada|Canadian digital television transition]] deadline of August 31, 2011, the CBC converted only about half of the analogue transmitters mandatory to digital (15 of 28 markets with CBC TV, and 14 of 28 markets with SRC). Due to financial difficulties reported by the corporation, the corporation published a plan whereby communities that receive analogue signals by re-broadcast transmitters in mandatory markets would lose their over-the-air (OTA) signals as of the deadline. Rebroadcast transmitters account for 23 of the 48 CBC and SRC transmitters in mandatory markets. Mandatory markets losing both CBC and SRC over-the-air signals include [[London, Ontario]] (metropolitan area population 457,000) and [[Saskatoon]], [[Saskatchewan]] (metro area 257,000). In both of those markets, the corporation's television transmitters are the only ones that were not converted to digital.

On July 31, 2012, the CBC shut down all of its approximately 620 analogue television transmitters, following an announcement of these plans on April 4, 2012. This reduced the total number of the corporation's television transmitters across the country to 27. According to the CBC, this would reduce the corporation's yearly costs by $10&nbsp;million. No plans have been announced to use subchannels to maintain over-the-air signals for both CBC and SRC in markets where the corporation has one digital transmitter. In fact, in its CRTC application to shut down all of its analogue television transmitters, the CBC communicated its opposition to the use of subchannels, citing, amongst other reasons, costs.<ref>{{cite web |url=https://services.crtc.gc.ca/pub/DocWebBroker/OpenDocument.aspx?DMID=1733163 |title=Re: Notice of Decommissioning of CBC/Radio-Canada's Analogue Television Rebroadcasting Transmitters – Reply argument of CBC/Radio-Canada |access-date=October 6, 2013 |archive-date=June 12, 2017 |archive-url=https://web.archive.org/web/20170612231206/https://services.crtc.gc.ca/pub/DocWebBroker/OpenDocument.aspx?DMID=1733163 |url-status=live }}</ref> CBC/R-C claims that only 1.7 percent of Canadian viewers actually lost access to CBC and Radio-Canada programming due to the very high penetration of cable and satellite. In some areas (particularly remote and rural regions), cable or satellite have long been essential for acceptable television.<ref>{{cite web|url=https://www.cbc.ca/news/entertainment/cbc-tv-tvo-end-analog-transmission-1.1145615|title=CBC-TV, TVO end analog transmission|publisher=Canadian Broadcasting Corporation|date=August 3, 2012|access-date=December 29, 2019|archive-date=August 8, 2020|archive-url=https://web.archive.org/web/20200808102527/https://www.cbc.ca/news/entertainment/cbc-tv-tvo-end-analog-transmission-1.1145615|url-status=live}}</ref>