There have been various reports that CTV (Toronto) switches off its OTA signal every night just after midnight.
Since CTV is owned by Bell Media, it could be one way of annoying enough people who have switched to OTA antennas and online streaming for other content in order to drive them back to cable and satellite TV.
But CTV isn’t alone; other channels also disappear, sometimes for days, or their signal strength fluctuates so widely that proper reception is not always ensured.
As for CTV, its secondary network CTV2 is still not available in HD in Alberta, despite a “firm promise” by a CTV manager in June last year, and there is no OTA channel for CTV2 anymore either.