Well said Mark!
Now let me see if can show the value of Police Call.
Last week I took a trip to Kulpsville, PA for the 18th Annual Winter SWL Fest.
It took me the better part of a week to set up my p96 files for the trip using my Pro-96.
If one looks through the rr database here for the PA counties that I-70/76 transgresses, it is somewhat lacking in information.
So, I went through the 2005 Police Call Vol. 2 for PA and just started programming stuff in my Pro-96.
If you have noticed the past several days there been a lot of updates for some Pennsylvania counties.
That is stuff I was able to confirm while traveling with info taken from Police Call and the FCC database lookup site.
I find it almost hard to believe that the only listing in Somerset County, PA is the 800 MHz freq I confirmed for the police.
Bottom line is, don't depend on any one source, use them all, they all supplement each other.
Of course, the smart hobbyist starts here with radioreference.com
Mark