Interferrence can come from a multitude of places. How is your antenna mounted? close to any power cables? There are three items you never want to forget,
(1) Never overlap the antenna on itself. Shortens range
(2) Never run your antenna parrelle with power cables.
Capacitive coupling induces white noise.
(3) Always make sure you antenna base or holder is real
tight. plain old vibration.
If you are running a brushed setup you'll need to check your motor for the following problems
(1) Brushes arching on the motor comm.
(2) Motor capacitors broken or missing.
(3) wire connections to the motor. Bad connections will
make the motor pull highter current thus making more
(4) Check battery connections.
(5) Receiver location, how it is also mounted.
(6) Crystals are usually the last to create problems, unless
the cases are dented in or rusty looking.
Since I don't know your model Transmitter/Receiver you can at least check these items first.
What type system do you have? Give us some more decent info so we can help you out better.
From Hueytown, Alabama The home of
some of the best NASCAR racers ever!
Bobby, Donnie, Davey, Clifford Allison
Red Farmer & Neil Bonnett