In the sound industry we do use a little different circuit that is better at keeping out noise but I don't think I would try to make a RC system do it.
It uses a positive charge/ neutral/ negative charge dc circuit.
If you've ever seen a waveform of a servo drive signal (0-volt then jumps to 5-volts for a specific time then back to 0-volts) picture this with a mirror (opposite) reflection under it and that's what it looks like. The benifit of this is that any inductive current is canceled out by the opposing charges. I.E. if it picked up an extra 1-volt positive )>5-volts positive plus 1= 6-volts positive / 5-volts negative plus 1-volt positive= 4-volts negative... 6 plus 4 still equals 10-volts of signal just like a clean 5-volts plus 5-volts equals 10-volts. It kills noise but it would take re-engineering the receiver and servos.
Fingers hurt so I've gone on way to long....
