Me and a friend made a 2.5 hour trip each way this last weekend, and i brought my V1 with in his car to run next to his to see who's picks up first and such. Well, they were both pretty close in picking up on radar at the same time, but something interesting happened.
While driving through downtown Decorah Iowa in traffic, the V1 went off showing KA with an up arrow, and about 5 seconds later junked it. After another 5 seconds, the 8500 started showing KA while the V1 stayed silent. After about 10 seconds, a police car slowly starts coming into view through the traffic. The 8500 stayed lit up like it should have, but the V1 stayed silent the entire time.
Now why in the world would my V1 have junked a real KA signal?