A vertical limit of 250ft sounds like a cut antenna.
I had this accident happened to me where I cut the antenna wire when I opened the Tx. Before the cut, I could go +5-600ft in any direction with no control signal loss at all (but wifi distance was the limiter);
Once it was cut, I could only go 250ft vertically and around 400ft horizontally before losing control signal.
I had this accident happened to me where I cut the antenna wire when I opened the Tx. Before the cut, I could go +5-600ft in any direction with no control signal loss at all (but wifi distance was the limiter);
Once it was cut, I could only go 250ft vertically and around 400ft horizontally before losing control signal.