Some significant dates in the history of broadcasting in Wales.
(Taken from the list in 'Broadcasting and the BBC in Wales' by John Davies, University of Wales Press, 1994. Used with the author's kind permission.)
One date we would like to add to the list is the formation of the RTS Cardiff and South Wales Centre on 10th April 1959.
| 1922 | 18 October | Inauguration of the British Broadcasting Company |
| 1923 | 13 February 1 March |
Cardiff station (5WA) is brought into service. First broadcast talk in the Welsh language. |
| 1924 | 17 March | Cardiff station moves to Park Place. |
| 1927 | 1 January | Inauguration of the British Broadcasting Corporation under the first Charter. |
| 1935 | 31 July 1 November |
A half of the households of Wales are licensed to receive radio broadcasts. Opening of the BBC studios at Bangor. |
| 1937 | 4 July | The Welsh Region begins broadcasting on its own wavelength. |
| 1945 | 27 July 29 July |
First issue of the Welsh edition of the Radio Times. Inauguration of the Light Programme and of the Regional Home Services (including the Welsh Home Service). |
| 1952 | 15 August | Wenvoe television station is brought into service. |
| 1953 | 6 January 1 March |
First meeting of the Broadcasting Council for Wales. First broadcast of a Welsh-language television programme. |
| 1955 | 20 December | Welsh Home Service becomes available on VHF from Wenvoe. |
| 1958 | 14 February | Inauguration of service by Television Wales and the West (TWW) from the St Hilary transmitter. |
| 1959 | 31 March | Half the households of Wales are licensed to receive television broadcasts. |
| 1962 | 14 September | Inauguration of Television Wales West and North (TWWN). |
| 1964 | 1 January | Merger of the output of TWWN with that of TWW. |
| 1965 | 12 September | BBC2 becomes available from Wenvoe. |
| 1967 | 1 March 21 August |
Broadcasting House, Llandaf, is opened. BBC2 begins regular colour television transmission. |
| 1970 | 9 July | BBC Wales first broadcasts in colour. |
| 1974 | 30 September | Inauguration of Swansea Sound. |
| 1978 | 13 November | Relaunch of Radio Wales. |
| 1979 | 19 November | Relaunch of Radio Cymru. |
| 1980 | 11 April | Inauguration of the Cardiff Broadcasting Company (CBC). |
| 1982 | 1 November 2 November |
Inauguration of Sianel Pedwar Cymru. Inauguration of Channel 4.
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