If he was really 1000ft out, the plane would have been invisible. I saw a club member crash two planes using one of the smaller Spektrum receivers. Both planes went out of range at approx. 600ft out. I know because I have measured the distance with my laser rangefinder. The Cub was getting small at that distance. I was flying/trimming the little Cub of his for him when it dove straight in. I didn't know that he had used a park flyer receiver. It says full range but don't believe it. He had crashed the 40 trainer a few days before at about the same distance. I don't know which ones they were, but he had removed them from some small foam types and installed them on glow planes. I personally use all Spektrum modules with AR900s and no problems in my 33% sizes. I also have an AR700 in my 78in Decathlon.