RE: Is there a radio that does not lose signal?
Jagthack,
It sounds you do a good job of setting up your plane and radio.
You said that the RX battery had a full charge. However, how old is the battery? if the battry is older, it could have a dead cell.
In that case if you check it with out a load, it will show OK, but when you put a load on it, it could go below the threshold voltage.
Just a thought....
It is my opinion that the Major brands of radios are all good, and you could get a bad system from any one of the brands.
Evan though they do a good job of quatlity control, a radio can be good when tested, and thenthen go bad shortly after. This can happen with anything in electronics.
I personally use Futaba, but most of the people in my club use Spektrum or JR. I have only been into RC for 2 years, but have not seen a plane crash due to radio failure with these systems.
Good luck on which ever system you choose.