Newmar PC-25 Power Conditioner Noise FilterPC 25 Power Conditioner Noise Filter The interference or electronic noise generated by alternators, ignition systems, motors, etc. can render a vehicle or vessels radio or other electronic equipment virtually useless. This interference takes the form of popping or static on radios or audio gear and garbled images or hashes on video displays. These specialized filters can be used singly or in combination to attenuate conducted line noise, either at the