Driving down a deserted rural road, my V1 suddenly came to life as two pick-ups appeared from around a curve. Since my V1 not only alerted to the junk RDs, it also counted two signals.
So if these two junk RDs are radiating up to a couple hundred feet, what were they doing to each other, being only 20 feet apart? If they were locking each other up, would not you think one of the drivers would turn his RD off? If not, maybe they like driving around in a constant interference war?