Just been pointed int he direction of a camera system I was unaware of, it's called "watchman" and like gatso use radar - but X Band radar !!!
after a little searching found this :
I have actually driven passed one as there's a siteless then 4 miles from home. I turned X band on the V1 and got a 1 light on the strengh bar as i approched it. I belive it to be switched off but I think I was poicking a little power from it.
anybody else know about this stuff ?