Boston Red Sox
WSBK 1975-1995
WABU 1996-1998
WFXT 1999-2002
WSBK/WBZ 2003-2005
They were on WLVI/56 for one year in the late 90s in-between WABU and WFXT. I think it was called something to the effect of The New England Television Network or somethign weird like that. (Not sure of the exact name. Not my team).
And even tho I'm not a fan of the team, I think it sucks you can't watch the games on Free Over The Air TV, except for the handful of games on the FOX Network.