Terrestrial television in India started with the experimental telecast starting in Delhi on 15 September 1959 (official launch date) with a small transmitter and a makeshift studio. The regular daily transmission started in 1965 as a part of All India Radio. The television service was extended to Bombay and Amritsar in 1972. Up until 1975, only seven Indian cities had a television service.

Television services were separated from radio in 1976. National telecasts were introduced in 1982. In the same year, colour TV was introduced in the Indian market. Indian small screen programming started off in the early 1980s. At that time there was only one national channel Doordarshan, which was government owned.

source: http://en.wikipedia.org/wiki/Television_in_India