There are a couple of duplicate channels out of Erie.
Channel 12.1 is WICU NBC
Channel 12.2 is WBEP The CW (WSEE-DT2 officially)
Channel 12.3 is WSEE CBS
Channel 35.1 is WSEE CBS
Channel 35.2 is WBEP The CW (WSEE-D2 officially)
WICU is owned by SJL Broadcasting and WSEE is owned by Lilly but operated by SJL. Both now operate out of WICU's facility on Peach Street and WSEE's downtown studio is closed. Popcorn take Peach Street or Route 19 south for a couple of miles and you will see why you pick those up so well. Hint: Look for all the broadcast towers outside of your window!
Channel 10 is CFPL out of London, Ontario and now known as the "A Channel".
Channel 31 is City-TV out of Woodstock, Ontario (Near London)
Channel 40 is CBLW (CBC) is also in London.
When you watch the PBS channels (WQLN 54.1, 54.2, 54.3) you will see they claim 2 hometowns - Erie, PA and London, Ontario. Viewer support comes from both sides of the puddle!