Since August 31, CKGM (TSN 690) in Montreal has been simulcasting on 990 kHz (their old frequency) and 690 kHz (their new frequency). 990 has been operating at the night-time power & pattern both day and night during this period, as they break in the new transmitter and antenna on 690.
This morning, and still at this point (4:30 pm EDT), 990 is off the air. I don't know if this is permanent or not. They were scheduled to run simulcast for about 3 months, but for now 990 is off. Worth checking out.
Sheldon Harvey
Radio H.F. - Canada`s specialist in radio communications