This controversy about AM and FM, my advice is to check your AM set AT THE FIELD with a friend's FM radio switched on. I used to fly a Futbba Attack AM at our field where most everyone had or was switching to the newer FM Futabas. It never caused any problems, at least no one ever complained. I have since gone to FM and the Attack is retired. However I have a another AM radio of another make that I was thinking of using as we have no club rule against AM. However the other night I ran an experiment. I switched on the AM radio in close proximity to my two Futaba FM equipped planes (Ch 49 and 40) Both FM sets went crazy! s! This was indoors as I said and at close range. I want to try it again but outdoors when the weather clears. I'll move the AM Tx further away and note the results. If no flutter, then I will take it to the field and try it on all the planes parked in our pits. If no interference then, and no objections, I will fly the Am set. Not very scientific, but probably satisfactory. Anyone with any ideas or input on this feel free to jump in.