RTÉ One

RTÉ One (Irish: RTÉ a hAon) is a television channel in Ireland. It is the main TV channel of Raidió Teilifís Éireann (RTÉ). It is the most popular channel in Ireland. It started in 31 December 1961 and was called Telefís Éireann. It was the first TV channel in Ireland.^[1] It was called RTÉ from 1966, and RTÉ 1 from 1978 when RTÉ 2 started.^[2] The channel was only in black and white between 1961 and 1968. From 1968, some programmes were broadcast in PAL colour.^[3]

RTÉ One
RTÉ a hAon

Country	Ireland
Broadcast area	Ireland & Northern Ireland Worldwide (online)
Headquarters	Donnybrook, Dublin
Programming
Language(s)	English Irish Irish Sign Language
Picture format	1080i 16:9 (HDTV) (2013–) 576i 16:9 (SDTV) (2005–) 576i 4:3 (SDTV) (1961–2005)
Timeshift service	RTÉ One +1
Ownership
Owner	Raidió Teilifís Éireann
Key people	George Dixon (Channel Controller)
Sister channels	RTÉ2 RTÉjr RTÉ News
History
Launched	31 December 1961
Former names	Telefís Éireann (1961–1966) RTÉ (1966–1978) RTÉ 1 (1978–1995)
Availability
Terrestrial
Saorview	Channel 1 (HD) Channel 11 (+1)
Freeview (Northern Ireland only)	Channel 53
Streaming media
Virgin TV Anywhere	Watch live
Aer TV	Watch live (Ireland only)
RTÉ Player	Watch live (Ireland only / Worldwide – depending on rights)

Some of the money for the channel comes from a government television licence, and the rest comes from advertisements.^[4] RTÉ channels have fewer advertisements than other channels because of this. RTÉ One can be watched by 98% of people in Ireland in HD on the Saorview digital service. It can also be watched on Freeview, Sky, Virgin Media, and online through RTÉ Player.