Before revision: An unintentional radiator or incidental radiator is any device which creates radio frequency energy within itself, which is then unintentionally radiated from the device .47 CFR 15.3 - Definitions This can interfere with other electronic devices.
After revision: An unintentional radiator or incidental radiator is any device that uses radio frequency electrical signals within itself, or sends radio frequency signals over conducting cabling to other equipment, but is not intended to radiate radio frequency energy .47 CFR 15.3 - Definitions Unintentional radio frequency radiation can interfere with other electronic devices.