- Common mode currents which run on the braid of shielded cables both in the station (microphone, computer, etc.) and on TV/radio downleads, speaker leads and interconnects can be treated with ferrite chokes, also called braid breakers; they are also effective on mains cables
- The cable is wound around a ferrite ring (toroid) or passes through a ferrite bead close to where it enters the device to be treated