I have a zdz 80 blue head and use a jr fm reciever . When the motor is running I get bad rf interference, when I shut the motor off it goes away. It has a NGK bpmr6f plug and I am going to replace it to see if that helps. Does anyone know how to fix this. I want to fly
you can check the ignition shield, the covering on the wire that goes from the ignition to the spark cap. If it has come undone in any way (holes, wires broken, etc.) it will give you very bad interference.