Sailplane

Hi,

What means can be used to reduce radio frequency interference that may come from sources outside (i.e. radio towers, cellular towers, other people flying at parks close to your club field, etc.) or from within your own model (i.e. electric motor, ECS, BEC, Rubbing electrical wires, etc.)? I fly 72 mHz. Aside from twisting the wires, some pilots have told me to rap aluminum foil around the receiver and/or to pass servo wires through ferrite beads (thoroids.) If this true, where can I purchase ferrite beads?

Thanks,
Ernie Diaz
Sailplane