ORIGINAL: JMurdoch
As for the pre-set servo functions, the higher end transmitters do have a thing called "failsafe" mode. This "IS" when the receiver looses the signal from the transmitter, the servos go into a pre-set position.
I'm curious. You said the failsafe is something built into the transmitter, but that when the receiver loses the signal it puts the servo into a pre-set position. I'm curious how the transmitter can effect such a change in the receiver if the receiver has lost the signal. Isn't the failsafe function actually built into the receiver?