I have no up-to-date information to add, but let me share some historical persective. I lived in the Capital District in the mid-to-late 80's, and in those days, here were the Mets affiliates, according to my notes from the time:
1984: WWCN-1460
1985: WWWD-1240
1986-87: WWWD-1240 and WPTR-1540
1988-90: WPTR-1540
Then I moved away.. so I lost track!
But I think WOFX has been the Capital District's home for the Mets since 2007 -- and I believe in that time it may have comprised the entire Mets "radio network" with WFAN.
I now live in the Midwest, and listen to the Mets (WFAN) via satellite radio and the MLB app on my iPhone. Times have certainly changed!