packyj

Thanks for the response Gryphon.

In reply, yes, I had field tested from all sorts of distances. As it turns out both places I had tried to fly were right in front of two different schools. I suppose that some sort of interference (maybe wi-fi?) could cause some sort of interference. But once the second location wasn't working well at all my brother and I took a very, very long trek through the neighboring field. We were at least 400 yards from anything at all... no trees or houses or anything and still getting the same interference. Batteries in the plane were fully charged but the next idea from my lhs was to replace the batteries in the transmitter even though the light indicates they are okay and it hadn't given the high pitched scream.