[DrKnow65]

Shielding is like a coax cable, picture the antenna/cable wire to your tv, one conductor (wire) in the middle with insulation just like a regular wire then wrapped with another baided wire (or better foil wrap) and another layer of insulation. The inner wire would be the signal wire to the servo and the outter braid would be connected to the negative (or ground) only at one end. I.E. to the reciever negative but not to the servo.

Don't use coax cable though :) you can get 22 or 24 gauge single conductor wire at your local musical instrument shop since they use stuff like this for guitar pick-ups to keep out signal noise (like we try to do with our radios :).

Between shielded signal wire, twisted power wires, and a capacitor, I'm not sure other then distance how one could better protect the radio stuff from EMI/RFI (electro magnetic inductance-interferance / radio frequency interferance). That's all I've found on the net...