1921, autumn – the first public demonstration of a radio set in Estonia
1923, 22 November – the Estonian word for broadcasting was invented (Hindrek Rikand, Chief of the Estonian Postal Administration)
1924, 16 January – the first presumed broadcast in Haapsalu, which somewhat resembled a communication session
1924, 11 May – the first radio broadcast in Haapsalu
1924, 17 May – founding of the first radio organisation, Estonian Radio Club (Eesti Raadio Klubi), which published the first radio magazine, Estonian Radio (Eesti Raadio)
1924, summer – a Swedish company conducted short test broadcasts in Tallinn
1924, 1 October – founding of the private limited company Radio Broadcasting (Raadio Ringhääling)
1925 September to 1926 March – constant test broadcasts from Tallinn
1926, 18 December – Kopli radio station started broadcasting. The beginning of regular broadcasting
1927, 1 January – introduction of a broadcasting tax
1927, 6 February – the first broadcast in Esperanto
1927, 6 February – Felix Moor started working in broadcasting. The first broadcast from the Estonia Theatre
1927, 12 February – the first recitation on air
1927, 16 February – the first reading hour
1927, 5 May – the first children’s hour
1927, summer – the first questionnaire
1927, 1 November – moving to the third floor of the Estonia Theatre
1928, 19 February – the first report (from the first radio exhibition)
1928, 24 February – the first radio drama
1928, October – a temporary station in Tartu started broadcasting
1928, 21 November – the first radio drama for children
1929, 28 April – the first public radio evening in the Estonia Theatre
1929, July – a new transmitter, built by Soviet experts, started operating. The previous transmitter in Kopli was moved to Tartu
1930, 20 June – the first sports report
1932, 1 June – Estonia became a member of the International Broadcasting Union (IBU)
1934, 30 June – Radio Broadcasting (Raadio Ringhääling) ceased its operations
1934, 1 August – the State Broadcasting Company (Riigi Ringhääling) began operating
1934, summer – music was broadcast for the first time during daytime (this was thus far only done in the evenings)
1934, 4 November – the first request concert
1935, 28 February – the first report from abroad (from the Helsinki exhibition hall)
1935, 6-8 August – the first Baltic broadcasting conference in Riga
1935-1936 – the first radio drama and composition competition
1936, March – the first record player arrived from America
1936, 25-26 April – the first Estonian-Finnish broadcasting conference in Helsinki
1936, 1 October – the beginning of school radio
1937, 31 May – the first time news was broadcast in the morning
1937, 15 December – Türi radio station started broadcasting
1938 – the first medium wave transmission of stereophonic signal
1938, August – the first broadcast vehicle, named Silver Grey (Hõbehall)
1938, October-December – the first joint broadcasts with the Finnish Broadcasting Company
1939, April – the first tape recorders arrived (tape recorders were first tested in Germany in 1935). The beginning of the construction of a radio station
1940 – the beginning of daily news in English and German in January and weekly French and Swedish overviews in March
1940, 22 November – establishment of the Radio Committee of the Council of People’s Commissars of the ESSR
1941, 26 August – the transmitter in Lasnamäe stopped working
1941, 7 September – Landessender Reval (German occupation propaganda) began broadcasting, lasting until 20 September 1944
1941, September-October – the first Estonian-language broadcasts from the rear of the Soviet Union: Leningrad, Moscow, Kuybyshev (Soviet propaganda), which lasted until February 1944
1944, 9 March – during the Soviet air strike on Tallinn, all studios and record collections, as well as the radio archive, were destroyed along with the Estonia Theatre
1944, 25 September – establishment of the entertainment and dance orchestra
1944, 29 October – the first post-war broadcast from Tallinn (a temporary broadcast was also done in September from Võru)
1945, 17 July – the radio moves to the basement of the radio station on Kreutzwaldi Street
1945, 16 October – establishment of a mixed radio choir
1947, 14 March – the beginning of regular Finnish broadcasts
1949, October – a medium wave transmitter was completed in Laitse (a medium wave trophy transmitter was set up), which operated until 1998, when Eesti Raadio stopped using the medium wave range
1949-1950 – the first (old) radio station was completed
1953, autumn – a portable tape recorder, Reporter-1, arrived from Moscow, weighing a total of 5 kg (it had a crank like a gramophone and recorded up to three minutes, powered by a spring)
1956, 1 May – ultrashort wave broadcasts from Tallinn
1958, 6 October – the first Päevakaja broadcast (the most important news of the day)
1958, 11 May – establishment of a club for young reporters, which produced a plethora of well-known radio and television personalities
1961, 21 July – the first ultrashort wave stereo broadcast
1965 – establishment of a public opinion research group
1967, 3 June – the second programme of Eesti Raadio – Vikerraadio – started broadcasting
1971, 1 January – the beginning of regular stereophonic broadcasts
1977 – the first quadrophonic test broadcast
1978 – Estonian Radio (Eesti Raadio) received its first cassette recorders (first used in 1962 in the USA)
1987 – reporters received the first stereophonic cassette recorders (Sony)
1991, 30 September – the first full-programme local radio on an independent frequency (Raadio Tartu) began broadcasting
1992, 1 March – the first private equity-based commercial radio in Tallinn (KUKU) began broadcasting
1994, 14 June – the Broadcasting Act entered into force
1995 – the first radio stations that broadcast using only a computer (Ruut in Valga, B3 in Tallinn) start operating
1997, May-June – Raadio 2 and KUKU started broadcasting online in real time
1998, 1 July – Eesti Raadio stopped using the medium wave. The transmitter in Laitse was closed with a bittersweet broadcast of whistling
1999, June-July – KUKU, Uuno and Elmar began broadcasting via satellite (until then, communication took place via the long-distance telephone line)