Hi all

There is a guy at our club who has a Raptor 50 (He also has a Raptor 30 which has a PCM receiver but has no problems with it.) and is using a JR PCM 9X and an R700 PPM receiver.All servos are digital and when he does a range check with the transmitter aerial retracted he starts to get interference after about 15m.What could the cause be or is it normal?
His antenna seems to be routed properly.I can't think of anything else being wrong.

Thanx