You should get service outside the station above ground from the cell phone towers. Even most of the fare gates aren't deep enough underground to block service completely.
Once you get past the fare gates though in SF, you typically will head down some escalators that take you deep enough to block cell service without BART's cell repeaters.
Just a point of interest -- most of the SF BART stations are not "repeaters" per se (except perhaps in the context of a network or higher layer protocol), but are actually full blown computerized radio systems themselves.
I suspect most are colocated BTSes (or equivalent) that are fed by leased lines.
Comments
You should get service outside the station above ground from the cell phone towers. Even most of the fare gates aren't deep enough underground to block service completely.
Once you get past the fare gates though in SF, you typically will head down some escalators that take you deep enough to block cell service without BART's cell repeaters.
Just a point of interest -- most of the SF BART stations are not "repeaters" per se (except perhaps in the context of a network or higher layer protocol), but are actually full blown computerized radio systems themselves. I suspect most are colocated BTSes (or equivalent) that are fed by leased lines.