Does the V1 have some sort of filtering on X band? On my way into work this morning, I was getting X band alerts on the +, but nothing on the V1. After I realized it had to be a Cobra, I went searching for it. Until I come across a older guy in a Impala with PA plates running it. The V1 did not alert to it at all. Just the +. After I stopped to pay a toll, the Impala kept going in the EZ PASS lane and the alerts stopped.