KPBS, PBS, NPR, CPB are different but related organizations. One can contribute to the national programs without supporting the local programs. If you give to KPBS you’re funding both the local TV and radio channels. They use part of that money to buy national programs.
Public Radio and TV used to be better but since the flap about them being biased on the left, they’ve tried to be more “balanced.” At one point, the Republicans wanted to completely cut funding for public broadcasting and the National Endowment for the Arts.
I beleive that “a great nation deserves great art.”