I have a Whistler SRT30R and it doesn't pick up my local cops. It picks up every other town's radar but not the one I live in lol. At first when I bought this RD I never planed on doing more then what I could see with my eyes. This unit has saved me 5 or 6 times when I was doing 10 -15 over. I'm really tight on cash right now and I wish I could make monthly payments on a blue X50 lol.