I don't know how you're going to break this to your wife.
According to my schedule ALL the Red Sox games on TV are on NESN!
NESN to the best of my knowledge is not OTA (over the airwaves)!
My suggestion, get a good radio antenna. WEMJ used to carry the Sox I don't know if they still do, you might try either the Red Sox website or the WEEI website to find the affiliates!
Glad I'm not you when you tell your wife
But on the other hand don't worry, most of them are night games! :-D