I do remember that. I also remember that most of the discussions in the ba.broadcast usenet group surrounded programs on KGO. That's where most of those people listened. I'm open to the possibility, of course. I'm smart enough to know you don't discount anything until all of the possibilities have been investigated. But they were specifically talking about the Hayward fault, and reception to the East. That also happens to be the place where ground conductivity falls off drastically. IIRC, geologists say The Bay was created by simultaneous earthquakes on the Hayward & San Andreas faults. So ground conductivity on the West side of the Hayward fault is going to be much higher. But 990 came in OK throughout the Bay Area, and the little 1480 from Concord was the only other one to the East. It didn't count. KGO has a couple of deep nulls in their figure-8 pattern to the East too, which also may have skewed people's observations. It's not like it's important enough for further research either. So who knows?@DaveBayArea do you remember this? - where there was speculation that seismic fault lines also could have a negative effect on ground conductivity. Moreover, antenna ground systems deterioriate and become less effective over time. Sites close to salt water initially benefit from its high conductivity but, later, suffer from more corrosion compared to sites farther away from salt water. One suspects that, in recent years, some sites haven't been maintained as well as they once were.
Dave B.