What type of radiation are radio signals?

Radio frequency (RF) signals are a form of non-ionizing radiation. This means they do not carry enough energy to strip electrons from atoms or molecules, which is the process known as ionization. In contrast, ionizing radiation, such as X-rays, gamma rays, and alpha particles, contains enough energy to alter atomic structures and cause genetic damage or cancer. Radio waves are at the lower energy end of the electromagnetic spectrum. The primary health hazard associated with high levels of non-ionizing RF radiation is tissue heating, much like how a microwave oven heats food. It is entirely different from the dangerous ionizing radiation associated with nuclear materials.