I dont have the gpsr pluged into the laptop, nor do I have any kind of wifi devices enabled. I just have the laptop running on battery power. If I put the laptop in the back seat it still causes problems, just not so much. It must be just something in my laptop causing some noise. I guess I can live with it. Its just nice to be able to look at PQ in the car and not have the gpsr go out while doing it. (not driving of course)