Let's say that you know of one of those "Your speed is..." radar sources, so you dismiss it.What about learning where the false signals are? I've only used Escort, so curious.
I've seen people fooled by that, while I check the Valentine One for how many sources it sees. If it's only one, okay, it's the stationary (or trailer) speed indicator.
But if it shows two or more, well, there's more to it than a "known false signal".