I recommend the Uniden BCD536HP. From Amazon it will be preloaded, but may have out of date database and firmware. So. Once you receive it, You will have to connect to your PC with the supplied USB cable, install Sentinel program from the scanner, update Sentinel, update the scanner firmware, then download the nationwide database into Sentinel and into your scanner. Using your local zip code, the scanner will activate all the systems in your area. From there, you will want to make favorite lists, which you can do with Sentinel. It is actually easier than building a template and codeplug for a Motorola or Harris radio. You are in the right place for information.