I am fairly new to the scanner world and have recently gotten a 396XT for Christmas. I live in the Ft. Worth area and am attempting to monitor Johnson Co., TX simulcast on the Fort Worth Region P25 system. At times, the audio is choppy or nonexistent. Sometimes my screen will show that it is receiving from Johnson Co SO but I hear no audio at all. Any ideas? Close call is off, attenuater is off, WX is off. I removed all of the frequencies except the control channel. Do I need to add all of those back in? Is there something I am doing wrong? Thanks in advance!