Depending on where you are in the Santa Barbara-Santa Maria-San Luis Obispo market, it varies which out-of-market PBS station you get. In Santa Barbara proper and other southern parts of that market, your cable will pipe in (or some OTA translators will relay) KOCE from the L.A. market. If, however, you're a resident of the northern parts of the market (e.g. Lompoc, Santa Maria, Buellton, San Luis Obispo, Paso Robles, etc.), your cable will bring you KQED from San Francisco. All of the above cities were served by KCET until its disaffiliation from PBS.
Palm Springs is another California market without a PBS station to call its own. It is now served via OTA translators and/or cable by KVCR from San Bernardino (again, in the L.A. market) and the aforementioned KOCE.