"Russ" wrote in message
...
Art,

Without the radio signal from the transmitter, the receiver will
respond to noise and move the control servos to unpredictable
positions, pretty much always resulting in a crash. Modern PCM
receivers can be programmed to assume pre-set control positions in the
absence of the control signal. This will usually result in a crash.
I have hundreds of hours flying RC model aircraft.

Off the wall question: What's the "butt-kickinest" high end radio these
days? PCM's been around for many years, anyone doing error correction, FEC,
Direct sequence spread spectrum?