The phenomenal growth achieved by All India Radio through decades has made it one of the largest media organizations in the world. Today AIR reaches out to 99.18% of the population spread over about 91.85% of the area through 262 broadcasting Centres. The inception can be traced back to the enforcement of the Telegraph Act on October1, 1885. Major landmarks of broadcasting are as below:
| Year | Date | Milestone |
| 1923 | June | Broadcast of programmes by the Radio Club of Bombay. |
| 1923 | November | Calcutta Radio Club put out programmmes. |
| 1924 | 31-Jul | Broadcasting Service initiated by the Madras Presidency Radio Club. |
| Year | Date | Milestone |
| 1930 | 1-Mar | IBC went into liquidation. |
| 1930 | 1-Apr | Indian State Broadcasting Service under Department of Industries and Labour commenced on experimental basis. |
| 1935 | March | Post of “Controller of Broadcast“ innstituted. |
| Year | Date | Milestone |
| 1941 | 24-Oct | AIR came under the Department of I&B. |
| 1942 | 1-Jan | Akashvani Mysore was taken over by Maharaja of Mysore. |
| 1946 | 23-Feb | AIR came under the Department of Information & Arts. |
| Year | Date | Milestone |
| 1952 | 20-Jul | First National Programme of Music broadcast from AIR. |
| 1953 | 29-Jul | National Programme of Talks (English) commenced from AIR. |
| 1954 | First Radio Sangeet Sammelan held. |
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