I have a two way radio and intercom setup in my Maverick Max and I get engine noise when I transmit and receive, I have tryed every thing I can thick of to fix the problem. moved the antena coax away from any other electrical( ran it down the left side ) Power and ground direct from the battery, Noise filter from Rugged ran the power and ground away from any other electrical (down the right side). Its crystal clear with the engine off. Any suggestion???