There was Chat about Maintenance?
Is there some type work being done on the CN tower antennas?
How long have you been experiencing trouble? Could be your antenna.
CITY-DT aired this disclaiming in December.
CFMT-DT, CJMT-DT, CITY-DT, CIII-41 are all phase 10 stations: testing begins no sooner than May 02, completion date July 03 (2020).
