Saorview

Key takeaways

Saorview belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Saorview to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Saorview from memory before moving on to harder problems.

Reference excerpt

Saorview ( SAIR-vyoo) is the national digital terrestrial television (DTT) service in Ireland. It is owned by RTÉ and operated by 2RN. The service began operation on 29 October 2010 on a trial basis with a full launch on 26 May 2011. By legislation it was required to be available to approximately 90% of the population by end of October 2010 in a public testing capacity and nationwide by December 2011. The national public launch was preceded by a public information campaign, which began on 15 March 2011, with television and radio advertising beginning on 17 March 2011. Saorview was officially launched on 26 May 2011 by Minister for Communications, Energy and Natural Resources Pat Rabbitte and the service became the primary source of broadcast television in Ireland following the ending of analogue transmissions on 24 October 2012.

Overview Saorview is Ireland's national DTT service. The Irish word saor [sˠiːɾˠ] means "free"; thus it is a partial calque of Freeview, the name of the DTT service of the United Kingdom. Saorview is available from 64 DTT transmitters covering 98% of the population as of the end of Q3 2012. The previous analogue terrestrial television (ATT) network was available to 98% of the population from 150 ATT transmitters, however TV3 and TG4 were not available on all transmitters. The service is a DVB-T/MPEG-4 HD broadcast that is received via set-top box (STB) receiver or iDTV and a UHF aerial is required. MHEG-5 is the middleware standard for digital teletext. Programme information is displayed through the receiver's own inbuilt EPG. Either DVB or Teletext subtitling can be displayed when broadcast. Mary Curtis became Director of Digital Switchover (DSO) in September 2010 and reported to the Director General. She oversaw the transition from Analogue to Digital TV broadcast, which was completed in October 2012.

Launch The service was launched in 2011 with the ASO campaign phase beginning Dec 2011. Two campaigns were launched. The first campaign was marketing Saorview and was paid for by RTÉ, this cost RTÉ over €3million, meanwhile, a second campaign featuring Gay Byrne was also launched by the Department of Communications, it also cost in the region of €3million. Both campaigns used social media such as Facebook and Twitter alongside their own websites www.goingdigital.ie (now defunct) and saorview.ie.

Channel Additions Saorview on launch carried just one High Definition (HD) channel — RTÉ Two HD, along with 7 Standard Definition (SD) channels and along with RTÉ's 10 radio stations. The second HD channel to launch was RTÉ One HD on 16 December 2013. TG4 HD joined the platform on 1 December 2022. UTV Ireland joined Saorview for its launch on 1 January 2015. It was later bought by rival TV3 and rebranded as be3, later all TV3 channels would be rebranded as Virgin Media Television, and this channel was renamed Virgin Media Three. Radio Maria Ireland was added to the service in September 2018. In December 2021 UCB Ireland radio joined Saorview, however they left the platform in March 2025. On November 30, 2021, Sky News joined Saorview on Channel 23. Virgin Media Four began broadcasting on 24 August 2022. Sky-owned Challenge joined its sister channel on the platform on 1 February 2023. In September 2023 TG4's time shift service, TG4+1, and its children's channel, Cúla4, were added to the line up. As of November 2023 there are 16 television services, of which 3 are HD, and 12 radio stations of which only 2 are non-RTÉ radio stations.

Proposed Changes July 2016 Irish TV said it would join the Saorview platform, however this did not happen due to the eventual closure of Irish TV. As part of RTÉ's "New Direction" they plan to drop RTÉ Radio 1 Extra, RTÉ Radio Jr, RTÉ 2XM, RTÉ Chill and RTÉ Pulse, but in a change to their "Strategy 2024" they plan to retain RTÉ GOLD. These services closed on 31 December 2025. RTÉ's time shift channels (+1 channels) are also due to close by 2028 under this plan.

Saorview Multiplexes RTÉ operates two DVB-T PSB multiplexes for transmission of Saorview television and radio channels. Both multiplexes are free-to-air and feature MPEG-4 encoding. Initially, only one multiplex was available on the service, the second public service Mux was launched with the introduction of RTÉ One in upscaled HD on 21 October 2013.

Commercial Multiplexes A further four multiplexes are available for commercial pay DTT.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Saorview

Start with the simplest possible case. Write down what Saorview claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Saorview before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Saorview ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Saorview

In research: Saorview appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Saorview in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Saorview is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2010 establishments in Ireland, 2010s in Irish television, Digital television, so understanding it makes those chapters shorter.
In everyday life: Look for Saorview outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study Saorview in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Saorview means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Saorview out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Saorview in simple terms?

Saorview ( SAIR-vyoo) is the national digital terrestrial television (DTT) service in Ireland. It is owned by RTÉ and operated by 2RN.

Why does Saorview matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Saorview?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Saorview.