Doordarshan is India's public service broadcaster that is operated by Prasar Bharati. It began as an experimental station in 1959 in Delhi and became India's sole television provider until the mid-1970s. In 1982, Doordarshan went national with the introduction of color television and live broadcasts of events like Independence Day speeches and the Asian Games. Today it operates 21 channels and provides coverage to over 90% of India's population through over 1,400 terrestrial transmitters.