Lamar, you better get in touch with Futaba and have them take a look at your set up. You have no idea what the qualifications are of any of the posters on RCU. The problem is not the ignition module, it’s the spark. Any arc can contain frequency components from DC to light and 2.4 gigahertz falls right in that range. It can be radiated or conducted right along or in the wires from the spark plug back to the module, switch, battery pack, kill switch and anything else in the fuselage. The best defense is to keep the ignition system separated from the receiver system. Dan(former RF engineer who does not know when Futaba posted that advise on their website but it’s good advise no matter how you look at it.)