I may try whatI have on hand for a kill switch. Plan...take a real free running servo that will work a good ignition switch in fuse. A spring (attached too servo arm) would open the switch as soon as Radio signal was lost...killing the engine. Now if the interference was from you engine set-up you may regain control of the airplane to make the best landing you can. May work ok on 30cc & up....do not know. Just a thought ! Capt,n