Useful resources for channels and signal reception
Ontario, New York stations
TV Fool (see what stations are broadcasting near you)
http://tvfool.com
UHF and VHF propogation
http://www.dxfm.com/content/propagation.htm
Real time Global VHF propagation map
http://aprs.mountainlake.k12.mn.us/
Canadian cell towers map (living near cell towers may interfere with reception)
http://www.ertyu.org/steven_nikkel/cancellsites.html
Antenna Basics
http://www.hdtvprimer.com/ANTENNAS/basics.html
US Digital TV Reception maps (also works for canadian locations/addresses who get US stations) shows signal strength between broadcast tower and reciever
http://transition.fcc.gov/mb/engineering/dtvmaps/