I am considering purchasing the BCD436HP. I am in the Seattle area, Specifically Bainbridge island Washington, near Seattle. It has been suggested that if I purchase this radio, upon set up I would select a 50 mile radius. I am able to monitor beyond that with my other radios, at times anyway. The only Phase II system in the metro Seattle area is King county metro, bus and light rail. Beyond the 50 mile radius would be Tacoma/Lakewood p.d etc. Any advice would be greatly appreciated.