While I have been a scanner listener for many years, I am relatively new to monitoring a P-25 system, using a Radio Shack PRO-197 and a Uniden HP-1. Is it normal for some digital transmissions to sound garbled? Or sometimes inaudible (i.e., I'll hear a transmission on one scanner, while the other scanner in the next room is silent on the same frequency). This situation occurs sporadically. Any insight would be appreciated. -- P.S. The P-25 system I monitor is relatively new (Bedford County, PA), which went on line last October.