Coverage of the preseason games are sparse. NBA ticket carried the first Sixers preseason game, I'm not sure about last nights with SA.
If you go to NBA.com and click on the schedule, you'll see which games will be televised, even on a local basis.
I don't place a whole lot of value on the games, as a determinant of the regular season. Like the NFL, it gives coaches the opportunity to see what kinds of players they have and what kind of abilities they have.
You won't see teams at their best, and many times the best players won't even play.
It's only a couple of weeks until the regular season starts...