Question: How many mandatory transmitters of Don Newman's employer were updated before the deadline?

Knowledge 1: Don Newman (broadcaster)
During major political events in the United States, he anchored coverage of it from the Canadian Embassy in Washington. The only events he did not anchor from Washington were the State of the Union addresses and the state funeral of Reagan. He anchored coverage of both those events from the CBC Ottawa bureau, where his daily politics program is based. [SEP] Knowledge 2: CBC Television
On August 18, 2011, the CRTC issued a decision that allows CBC's mandatory market rebroadcasting transmitters in analogue to remain on-air until August 31, 2012. Before that deadline, CBC's licence renewal process would take place and CBC's digital transition plans would be examined as part of that process. The requirement remains for all of CBC's full-power transmitters occupying channels 52 to 69 to either relocate to channels 2 to 51 or become low-power transmitters. In some cases, CBC has opted to reduce the power of existing transmitters to low-power transmitters, which will result in signal loss for some viewers.
Knowledge 1: Don Newman (broadcaster)
During major political events in the United States, he anchored coverage of it from the Canadian Embassy in Washington. The only events he did not anchor from Washington were the State of the Union addresses and the state funeral of Reagan. He anchored coverage of both those events from the CBC Ottawa bureau, where his daily politics program is based. [SEP] Knowledge 2: CBC Television
While its fellow Canadian broadcasters converted most of their transmitters to digital by the Canadian digital television transition deadline of August 31, 2011, CBC converted only about half of the analogue transmitters in mandatory areas to digital (15 of 28 markets with CBC Television stations, and 14 of 28 markets with Télévision de Radio-Canada stations). Due to financial difficulties reported by the corporation, the corporation published digital transition plans for none of its analogue retransmitters in mandatory markets to be converted to digital by the deadline. Under this plan, communities that receive analogue signals by rebroadcast transmitters in mandatory markets would lose their over-the-air signals as of the deadline. Rebroadcast transmitters account for 23 of the 48 CBC and Radio-Canada transmitters in mandatory markets. Mandatory markets losing both CBC and Radio-Canada over-the-air signals include London, Ontario (metropolitan area population 457,000) and Saskatoon, Saskatchewan (metro area population 257,000). In both of those markets, the corporation's television transmitters are the only ones that were not planned to be converted to digital by the deadline.
Knowledge 1: Don Newman (broadcaster)
During major political events in the United States, he anchored coverage of it from the Canadian Embassy in Washington. The only events he did not anchor from Washington were the State of the Union addresses and the state funeral of Reagan. He anchored coverage of both those events from the CBC Ottawa bureau, where his daily politics program is based. [SEP] Knowledge 2: CBC Television
On November 30, 2010, CBC's senior director of regulatory affairs issued a letter to the CRTC regarding CBC's plans for transitioning to digital. The letter states, "CBC/Radio-Canada will not be converting its analogue retransmitters in mandatory markets to digital after August 31, 2011."  On December 16, 2010, some months after the CRTC issued a bulletin reminding broadcasters that analog transmitters had to be shut off by the deadline in mandatory markets, the CBC revised the documents accompanying its August 6, 2010 news release to state that it had the money for and is striving to transition all 27 transmitters by August 31, 2011.

Answer: only about half