If your scanner is a little quieter than usual its because the CHP is in the process of upgrading their communications system. Part of the upgrade involves all new frequencies. 42.420 which has been home to CHP Newhall for well over 40 years is no more. You can now find our local CHP on 45.7000 and guess what, they’re no longer full duplex, you can now hear both sides of the conversation. I have all of the new freqs and its gonna take me some time to type up an understandable list, when im done I will post an update.