Welcome to RR.com, turbotommy!
This
RR Wiki article on the Pro-135 will give you most of the technical information you should need. You haven't said what you plan to use the scanner for so I must point out that this is a conventional use scanner only; it does not do trunking which most public service agencies now employ and it is not digital capable.
It would be helpful to know your location to answer your question as well. I urge you to return to your
User CP (left side of the second blue bar from the top of any page if you are logged in) and edit your profile to include your location (city & state) so it will automatically show in each of your posts. As I have indicated, if we know your location it makes answering most questions or giving advice much easier for us.