The Llandyfriog transmitting station is a

broadcasting Broadcasting is the distribution of audio or video content to a dispersed audience via any electronic mass communications medium, but typically one using the electromagnetic spectrum (radio waves), in a one-to-many model. Broadcasting began ...

and

telecommunications Telecommunication is the transmission of information by various types of technologies over wire, radio, optical, or other electromagnetic systems. It has its origin in the desire of humans for communication over a distance greater than tha ...

facility located on high ground several kilometres east of the town of

Newcastle Emlyn Newcastle Emlyn ( cy, Castellnewydd Emlyn) is a town on the River Teifi, straddling the counties of Ceredigion and Carmarthenshire in West Wales. It is also a community entirely within Carmarthenshire, bordered by those of Llangeler and Cenart ...

Ceredigion Ceredigion ( , , ) is a county in the west of Wales, corresponding to the historic county of Cardiganshire. During the second half of the first millennium Ceredigion was a minor kingdom. It has been administered as a county since 1282. C ...

, South Wales. It was built in 1980 to relay VHF radio and UHF television to Newcastle Emlyn and the area in general. The site has a 25 m self-standing lattice mast erected on land that is itself about 105 m above sea level and acts as an off-air television relay of Preseli, about 20 km to the west. Since Winter 1981 Llandyfriog has transmitted FM radio, acting as an off-air relay of

Blaenplwyf Blaenplwyf (''Pontllanio'' previously) is a village in Ceredigion, to the southwest of Aberystwyth. It is noted for the Blaenplwyf transmitting station, which serves Aberystwyth and Cardigan Bay area. It was originally built by the BBC in 1956� ...

about 50 km to the north. In Spring 1983 the radio services were upgraded to stereo. Currently, Llandyfriog transmitter provides

DVB-T DVB-T, short for Digital Video Broadcasting – Terrestrial, is the DVB European-based consortium standard for the broadcast transmission of digital terrestrial television that was first published in 1997 and first broadcast in Singapore in Feb ...

digital television to the area, along with FM radio.

Services listed by frequency

Analogue television

November 4th 1977 - November 1982

The station launched with just the original three channels.

November 1982 - November 1997

Being in Wales, when Channel 4 arrived in 1982, Llandyfriog transmitted the

S4C S4C (, ''Sianel Pedwar Cymru'', meaning ''Channel Four Wales'') is a Welsh language free-to-air public broadcast television channel. Launched on 1 November 1982, it was the first television channel to be aimed specifically at a Welsh-speaking ...

variant.

November 1997 - 19 August 2009

Llandyfriog was the site of one of the UK's two self-help analogue Channel 5 transmitters.http://stakeholders.ofcom.org.uk/binaries/consultations/selfhelp/summary/selfhelp.pdf (see final page)

Analogue and digital television

19 August 2009 - 16 September 2009

The UK's

digital switchover The digital television transition, also called the digital switchover (DSO), the analogue switch/sign-off (ASO), the digital migration, or the analogue shutdown, is the process in which older analogue television broadcasting technology is con ...

commenced, mirroring the changes taking place at the parent transmitter at

Preseli Preseli Pembrokeshire (, ; cy, Preseli Sir Benfro) was one of six local government districts of Dyfed in West Wales from 1974 to 1996. Until 1987 the name of the district was Preseli. The district took its name from the Preseli Hills. Creation Th ...

. Analogue BBC Two Wales closed on channel 28 and ITV1 Wales took over on that frequency for what would be its final 3 weeks of service, vacating channel 25 as it did so. The new digital BBC A multiplex started up at full power in 64-QAM mode on channel 25.

Digital television

23 September 2009 - present

All the analogue television services closed and the new digital multiplexes took over on channels 22 and 28.

Analogue radio (FM VHF)

Winter 1981 - present

References

External links

The Transmission Gallery: Photographs and Information

The 'ukfree' listing for Llandyfriog
{{Television transmitters in the UK Transmitter sites in Wales