I just wanted to let anyone that is thinking about buying one of these scanners to know, do it! I bought both and I can hear things I've never heard before from many miles away! I can't wait for the siren app to come out so I can control and listen from my smartphone from anywhere I'm at and I will be taking the 436 with me on my vacations. I really enjoy sitting in my radio room listening to both of them! There goes my income tax return, but worth it lol.