The Canada stations are easy , the Tv transmissions from magnetic compass 245 are Very Strong. A indoor antenna will work Ok ,
http://forum.tvfool.com/showthread.php?t=233 , extend the metal rods of the antenna to a horizontal or Low V shape and the rods are broadside to the Tv transmitters. In Canada the Analog to Digital Tv transition is taking place you will have a mix of both. . If you will like to watch the USA stations you will need a winegard HD7697P on the roof pointed at 169 magnetic compass. I do not know about Canada sellers of Winegard , here are some USA sellers
http://www.solidsignal.com ,
http://www.starkelectronic.com ,
http://www.warrenelectronics.com ,
http://www.amazon.com . Also read and understand this about Real and Virtual Tv channels.
http://forum.tvfool.com/showthread.php?t=695 This is what has happend in the USA , the same thing is happening in Canada , however in Canada the tax payers/government is not providing money for the tranisition so as one Canadian put it , It's a "Fascinating Mess"
http://www.tvtechnology.com/article/105462 . Interesting reading at digitalhome
http://www.digitalhome.ca/forum/showthread.php?t=30998