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The Holyhead transmitting station was a broadcast television facility located about 2.5 km to the west of
Holyhead, on
Anglesey
Anglesey (; cy, (Ynys) Môn ) is an island off the north-west coast of Wales. It forms a principal area known as the Isle of Anglesey, that includes Holy Island across the narrow Cymyran Strait and some islets and skerries. Anglesey island ...
, Wales. It had a self-supporting 30 m lattice mast erected on land that is itself about 76 m above sea level. The site was originally built by the
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...
, entering service in early 1964 transmitting the now-defunct
405-line
The 405-line monochrome analogue television broadcasting system was the first fully electronic television system to be used in regular broadcasting. The number of television lines influences the image resolution, or quality of the picture.
It wa ...
VHF television system.
When
UHF 625-line colour TV came to north Wales in the 1970s, the locality fell into the service area of the main transmitter at
Llanddona
Llanddona (; ); ) is a village and community noted for its sandy beach in the Welsh county of Anglesey. Located between Benllech and Beaumaris, it is popular as a holiday destination, particularly for families. Llanddona has no shops; however, ...
or the relay at
Arfon and so this site was not needed as a repeater.
405-line television from Holyhead was shut down in January 1984. The site appears to have been demolished subsequently.
Services listed by frequency
Analogue television
24 February 1964 – January 1984
BBC 405-line television started up with the site acting as an off-air relay transmitter of Llanddona about 35 km to the east. BBC research report 1963-50
shows that the town of Holyhead fell just outside the service area of the Llanddona main transmitter and points out that co-channel interference (presumably from
Divis
Divis (; ) is a hill and area of sprawling moorland north-west of Belfast in County Antrim, Northern Ireland. With a height of 1,568 ft (478 m), it is the highest of the Belfast Hills. It is joined with the neighbouring Black Mountain, a ...
in Northern Ireland, about 170 km to the northwest across the
Irish Sea
The Irish Sea or , gv, Y Keayn Yernagh, sco, Erse Sie, gd, Muir Èireann , Ulster-Scots: ''Airish Sea'', cy, Môr Iwerddon . is an extensive body of water that separates the islands of Ireland and Great Britain. It is linked to the Ce ...
) was "severe".
January 1984 – present
405-line television was shut down at Llanddona in 1984 and Holyhead's Band I transmitter therefore ended its service after 20 years.
See also
*
List of masts
The tallest structure in the world is the Burj Khalifa skyscraper at . Listed are guyed masts (such as telecommunication masts), self-supporting towers (such as the CN Tower), skyscrapers (such as the Willis Tower), oil platforms, electricity ...
*
List of tallest buildings and structures in Great Britain
This list contains all types of structures in height or more, which is the accepted criterion for a building to qualify as a skyscraper in the United Kingdom.
Entries in ''italics'' denote approximate figures.
Structures taller than 300 ...
References
External links
MB21's page on BBC 405 TV to Wales and the West
{{Llanddona VHF 405-line Transmitter Group
Transmitter sites in Wales
Trearddur