WNPI PBS , WNYF
http://wnyftv.org and WCFE 38 PBS at 176 and 119 degree magnetic compass will be easy to receive. WWNY 7 CBS and WWIT 21 ABC at 220 and 218 degree magnetic compass are harder to receive , and WPTZ 14 NBC will most likley not be received , but then the only way to find out on NBC is to try. As part of the installation and testing phase you can aim the HD7084P antenna at the American stations. There is no advantage in signal strength of raising the antenna height from 25 feet to 40 feet but if the installation above the roof goes as high as 40 feet thats Ok.