I have a sportster 5 which is very noisy. If I turn it on with everything connected or everything disconnected it creates a ton of static on ALL FM frequencies, if I turn it off the static on all FM channels goes away. I want to know if anyone out there has the same issue? Is it a bad design or do I just have a bad radio? Also I tried just turning the sportster on in different cars and it does the same thing. Also it can screw the FM reception up on a car 25 feet away (sportster set to 88.7 listening to 107.3 in other car).