control channel audio

I have the above scanners listed, I need information as why at times they just go crazy, I am in Daytona Beach, Volusia County, trunked Ecads system, Some days while running all the scanners at one time I will start getting the control channel hang (that load ststic), sometimes it will continue...

I have a BCT15X which I programmed from RadioReference using both ProScan and FreeScan with the California Marin County MERA Database, and with both setups the Control Channel audio is all that I hear. No voice audio. Can someone help me sort this out? I used the same database to program my...