LAWS Executive Order On Enhancing Safeguards For United States Signals Intelligence ActivitiesFull text CFR Part 15 is the section of Title 47 that defines and regulates radiofrequency emissions. These include intentional emissions, such as the radiation of phones and radios that use RF to communicate. However, there’s also unintentional and incidental radiation which are the accidental byproduct of operations. Anything which produces these types of emissions is a Part 15 device that’s subject to relevant FCC regulations.