The New York City area cable/satellite systems also carry four PBS stations:
WNET-13
WLIW-21
WNYE-25
WNJN-50
> I think the carriage rules for noncommercial TV stations are
> different than those for commercial TV stations.
>
> Many cable systems in the Boston area carry four PBS
> stations: WGBH-2 and sister station WGBX-44 (Boston),
> WENH-11 (Durham, NH), and WSBE-36 (Providence). In many
> cases, WSBE is the only Providence station carried.
>