I recommend Winegard HD7084P antenna with a Winegard AP8700 preamp and a Rotor. . Install All New RG-6 coax cable , do not reuse any of the cable or twin lead. The channels to receive are , 18 , 27 , 44 , 12 , 6. I do not know when the Tv stations at your area will be changing to digital. The folks at digitalhome will help you. Here are business in Canada that sells antennas and etc..
http://www.saveandreplay.com ,
http://www.trentondistributors.com ,
http://www.friends.ca . Here something , free satellite tv ,
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