The AM dial varies greatly depending on where you are in the city. The further west, the less you hear, the further east, as in Orleans, the better. The daytime dial in Ottawa as of today includes Local 580, 690 from Montreal, 730 (barely during the warm months) from Montreal. 800 Montreal, 1050 Massena New York, local 1200, 1280 Montreal, local 1310, local 1350 and local 1670. The latter 2 have go0d signals in the city despite the lower power. In Orleans you can add 620 from Burlington, 790 Watertown, 1040 Montreal, 1070 Plattsburg, 1340 Massena, 1400 Ogdensburg, 1410 Montreal, 1450 Montreal, 1470 Pottsdam. Those are the easy ones to hear. Also out there, you can add Montreal's 1570, 1650 and 1690 to the mix as well as 1490 Malone, NY.
With my cc plus I can add the Toronto/Hamilton/Niagra stations at 530, 550 610 640 680 740 820 860 1010 at any time of the year. 1180 is not a factor in the city daytime due to 1200, maybe on the extreme west edge of the city.
At night the usual suspects at 650, 660, 670, 710, 720, 740, 750, 760, 770, 780, 810, 820 (Cham) 830, 840, 850, 860, 880, 890, 900, 1000, 1010, 1020, 1030, 1060, 1080, 1090, 1100, 11110, 1120, 1130, 1140, 1170, 1180, 1500, 1520, 1530, 1540, 1550 (Windsor) 1560, and 1580 that you would expect to hear are in. Some surprises. 600 if you hear anything is CKAT from North Bay. 610 is WIP, 630 is usually WMAL but WPRO and CFCO can be heard underneath. 830 is from Boston, 850 from Cleveland. 1430 from Toronto is very strong. Rochester comes in at 1180, 1370 and 1460 with decent night signals. The x band is 1610 Toronto, 1620 Indiana, 1630 Iowa city (unless you're on the south side where it's the airport station, 1640 Pewaukee, 1650 is mostly Mississauga with Cedar falls underneath and occasionally Virginia, 1660 is NewYork, 1680 from just outside of Philly, 1690 Toronto or WVON...rarely Montreal at night unless conditions are right. 1700 is hit or miss, never knowing what you'll hear. At night local 1350 has a lot of noise underneath downtown on somenights, the modulation is quite low, but some nights it's crystal clear downtown, despite being only 180 watts. Truthfully that's the station I listen to most besides 1310 and 800.