a bel 936 express for $65,this is my first radar,so tell me how do these thing operate,i dont think ill be getting the manuals,so i will prolly be lost,do i have to switch bands manually or does it tell me automatically what band it pics up radar on,will this have a option to use batteries,instead of just the cord, i know cord is better but id like to know

 

whats (pv) do