So I get this email from a CSR;
Thanks for asking about FSN Bay Area in HD. I'm sorry our previous response did not clarify this matter. While we do carry FSN Bay Area in HD in certain parts of their coverage area, we cannot provide FSN Bay Area in HD to you because our HD satellite “spot beam” doesn’t quite reach your area.
We deliver FSN Bay Area’s HD feed to the coverage area using the same technology we use to deliver local channels to the Sacramento-Stockton-Modesto CA area. This technology is known as a satellite spot beam and it covers the areas immediately around the city like a spotlight. In zip codes near the outer edges of a "spot beam," we aren't able to offer local channels or FSN Bay Area in HD because there is a possibility that another satellite spot beam will overlap and cause interference. As a result, even though you do live within the FSN Bay Area local coverage area, you live in a zip code where we are not able to deliver it to you. I’m sorry for any inconvenience
So why is it that I receive my locals in HD from Directv(95624)? I wish you could get a honest answer.