iHeartRadio. All your favorite music, podcasts, and radio stations available for free. Listen to thousands of live radio stations or create your own artist stations and playlists. Get the latest music and trending news, from your favorite artists and bands.
Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies as high as 300 gigahertz to as low as 30 hertz (). At 300 GHz, the corresponding wavelength is 1 mm (shorter than a grain of rice); at 30 Hz the corresponding wavelength is 10,000 km (longer than the radius of the Earth).