I have a tr624 receiver and a ttx650 transmitter and the receiver is going into failsafe at 100ft put in another one and works fine I have 20 receivers half in air planes is ther any poblems with these receivers. I have some in glow and electric batteries are all charged. i am worried about fly other planes. Is thear any problems with the receivers any one is having. thanks

A short-range receiver can happen once in a while. Just send it to the service center under the warranty. That's a full-range unit, so its short range is not normal.

From Tactic - full range is 1000 ft!