Radio has made a comeback in India due to technology allowing for private players and foreign investment. Radio broadcasting uses different technologies like AM, FM, and satellite. FM radio provides higher quality sound and additional channels. HD radio allows digital broadcasting of AM and FM stations. Internet radio provides streaming audio worldwide. The history of radio involved many pioneers and the development of technologies like wireless telegraphy, AM, FM, and digital broadcasting standards. Radio broadcasting grew from wireless telegraphy to include entertainment and became a mainstream mass media technology.