The question, especially in the Bay Area, that you always have to ask yourself when making that kind of statement is: a decent signal for whom? No FM station has full-market coverage, due to the combination of terrain and Zone I-A power and height limits. In the case of 105.7, it's paired with 100.7 - 105.7 is just fine in the south Bay; 100.7 gets the central and north Bay. Yeah, if you're in Walnut Creek, you're still probably out of luck if that's the station you want to hear. But the Diablo Valley is where FM signals go to die.105.7 is not a decent signal, that is the problem with any format on that signal.