Hmm.. Try this.
I just checked on the rogers channel page HERE http://www.rogers.com/web/Rogers.portal?_nfpb=true&_pageLabel=PTV_PROG_LANDING
In the bottom right hand corner for my area.
When i enter my province/city in the HD box section... then look through the list, lists AMC on 35, as well as the upper channel 482.
SD, shows the same (though it lists it as the FULL name not AMC for some reason).
Try putting in your province/city... and look through the list.
At WORST case.. try channel 482