NBA blackouts are like MLB and NHL. They are territorial. For example, whenever the Hawks play the Wizards (home or away), I have it blacked out here in Central PA because we're considered to be a "local market" for DC. I don't get Fox Sports Mid-Atlantic, so I become screwed. I get Comcast Sports Philly, so no Philly blackouts.
Don't even get me started about MLB. I am in the blackout zone for Pit, Wsh, Balt and Philly. The Braves play anyone in that crew (except Philly), I can't get the game.
Make sense?