I'm in Toronto's East side on the Danforth. I used to be able to get all of the US Buffalo channels and even some Rochester ones. Now, NBC Buffalo 2.1 etc does not come on at all. Most nights, I get CBS Buffalo 4.1 etc and ABC Buffalo 7.1 etc. The 23s and 29s are great. I had my antenna repositioned last summer after I had trouble getting PBS.

Except for Channel 23 and 29, most US station signals have all become weaker in the last 3 years or so.

Can somebody explain why?