I have a new office on the 14th floor of a building overlooking SF bay. I see the Coast Guard helicopter flying around pretty regularly. I have a handheld scanner, but so far I haven't been able to hear them. I looked at United States Coast Guard - The RadioReference Wiki and I have listened to 345.000 AM mostly and not heard anything. Anyone around the bay area have confirmed frequencies I should monitor? Are they still using analog, or are they P25 now?