I bought my dad a Pro 164 for Fathers Day he has a Pro 91. What are the benefits of him having the 164? I know he will say "mine works fine, why did you get me a new one" But he is always complaining that the police go to ?law one? mode and he doesn't get to hear the entire conversation. I was hoping that this new scanner would fix this problem He lives in Elkhart Lake, WI (Sheboygan County). Is there anything I need to do to the scanner before I give it to him later today?