I have been testing this unit and am left unimpressed. On my way to the interstate, I was hit with some instant on and luckily saw the sheriff coming. On the way down I-95, there were three occasions where the troopers had left their ka band units on while citing the speeders. I could see the cars and at times be right on the trooper before getting an alert. Around town, this unit may be adequate, but for the open road V1 will be on my windshield. That dog can hunt!