Llandyfriog transmitting station

Llandyfriog
Height of mast 25 metres (82 ft)
Grid reference SN348412
Built 1980
Relay of Preseli
BBC region BBC Wales
ITV region ITV Wales

The Llandyfriog transmitting station is a broadcasting and telecommunications facility located on high ground several kilometres east of the town of Newcastle Emlyn, Ceredigion, 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[1] Llandyfriog has transmitted FM radio, acting as an off-air relay of Blaenplwyf about 50 km to the north. In Spring 1983[2] the radio services were upgraded to stereo.

Currently, Llandyfriog transmitter provides DVB-T digital television to the area, along with FM radio.

Services listed by frequency

Analogue television

1980 - November 1982

The station launched with just the original three channels.

Frequency UHF kW Service
479.25 MHz 22 0.11 BBC One Wales
503.25 MHz 25 0.11 ITV1 Wales (HTV Wales until 2002)
527.25 MHz 28 0.11 BBC Two Wales

November 1982 - November 1997

Being in Wales, when Channel 4 arrived in 1982, Llandyfriog transmitted the S4C variant.

Frequency UHF kW Service
479.25 MHz 22 0.11 BBC One Wales
503.25 MHz 25 0.11 ITV1 Wales (HTV Wales until 2002)
527.25 MHz 28 0.11 BBC Two Wales
559.25 MHz 32 0.11 S4C

November 1997 - 19 August 2009

Llandyfriog was the site of one of the UK's two self-help analogue Channel 5 transmitters.[3]

Frequency UHF kW Service
479.25 MHz 22 0.11 BBC One Wales
503.25 MHz 25 0.11 ITV1 Wales (HTV Wales until 2002)
527.25 MHz 28 0.11 BBC Two Wales
559.25 MHz 32 0.11 S4C
583.25 MHz 35 0.11 C5

Analogue and digital television

19 August 2009 - 16 September 2009

The UK's digital switchover commenced, mirroring the changes taking place at the parent transmitter at Preseli. 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.

Frequency UHF kW Service System
479.25 MHz 22 0.11 BBC One Wales PAL System I
506.000 MHz 25 0.022 BBC A DVB-T
527.25 MHz 28 0.11 ITV1 Wales PAL System I
559.25 MHz 32 0.11 S4C PAL System I
583.25 MHz 35 0.11 C5 PAL System I

Digital television

23 September 2009 - present

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

Frequency UHF kW Operator
482.000 MHz 22 0.022 Digital 3&4
506.000 MHz 25 0.022 BBC A
530.000 MHz 28 0.022 BBC B

Analogue radio (FM VHF)

Winter 1981 - present

Frequency kW Service
90.1 MHz 0.05 BBC Radio 2
92.3 MHz 0.05 BBC Radio 3
94.5 MHz 0.05 BBC Radio Cymru
99.7 MHz 0.05 BBC Radio 1
104.4 MHz 0.05 BBC Radio 4

See also

References

  1. ↑ http://www.bbceng.info/Eng_Inf/EngInf_7.pdf
  2. ↑ http://www.bbceng.info/Eng_Inf/EngInf_13.pdf
  3. ↑ http://stakeholders.ofcom.org.uk/binaries/consultations/selfhelp/summary/selfhelp.pdf (see final page)

External links

Coordinates: 52°02′42″N 4°24′35″W / 52.044975°N 4.40959°W