My hubby loves to listen to police and fire. So for x-mas I purchased the RadioShack PRO-163 Scanner. We live in Kankakee county & Iroquois County. Did I make the right purchase? I don't know very much about scanners. The only thing I know is that there are digital and non digital. What is the listening difference? Any advice would be greatly appreciated. Please e-mail me at firstname.lastname@example.org thank you.