thebigtower


llanddona

 

**ALL PAGES ADDED/UPDATED JANUARY 2014**


THE LLANDDONA TRANSMITTER is the UHF and BBC FM main station that serves the Isle of Anglesey and parts of the North and North-West Wales coastline.  It is sited on Anglesey, close to the island's north-eastern coast.

The station first came into operation in January 1958 as a BBC 405-line television transmitter, broadcasting on VHF Channel 1. The first regular UHF transmissions were BBC2 from 3 June 1967 with BBC1 and ITV following much later in 1973.

At a height of 106.7m (350.6ft), the mast is the shortest of those present across the six main UHF transmitters in Wales. Somewhat ironically, it is the parent station of the UHF relay at Arfon, which features the tallest mast in Wales.


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Ctown Castle Station Plate

 

BBC Crest

 

 

 BBC Crest - Click here for full image


DIGITAL SWITCHOVER

Llanddona completed the Digital Switchover process as follows -

Stage 1 (DSO1) 21 October 2009

BBC Two analogue ceased transmission on Channel 63 / Mux1 ceased transmission on Channel 50.

BBC One analogue moved for remainder of operation from Channel 57 to Channel 63 to allow release of Channel 57.

First BBC multiplex - BBCA (PSB1) launched on Channel 57.

 

Stage 2 (DSO2) 18 November 2009

All remaining analogue and low powered digital services ceased broadcasting permanently and the high powered digital multiplexes launched.


 

 

 

 

 

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Aerials

 

UHF Coverage Map

 

 

 

 

 

 

 

 

 

 

 

 

 

420x560 pixel images

 

530x710 pixel images

 

Supersize Options

 

 

 

 

 

 

 

 


Aerials>  Landscape/Site Images (740x430 or 930x570)  Supersize Images>  BBC Crest>  UHF Map


STATION INFORMATION


Location:

Llanddona, near Beaumaris, Anglesey, LL58 8YE

Grid Reference:

SH583810

Landlord:

Arqiva (Legacy: BBC/Crown Castle UK/NGW)

Ground Height:

140.0m

BBC Region:

Wales

Mast Height:

106.7m

ITV Region:

Wales

Aerial Height (*):

252m

 

UHF Tx Number:

11800

(*) Average UHF aerial height above sea level (a.o.d)  

 

 


  CURRENT TRANSMISSIONS

Digital Television  

 

Analogue Radio (FM)

 

 

 

 

 

 

 

 

 

Service

: Ch/Polarisation/e.r.p

 

 

 Service:

(MHz)

(e.r.p)

PSB1

: 57 / H / 20kW 

 

 

BBC Radio 1:

99.4

21kW

PSB2

: 60 / H / 20kW 

 

 

BBC Radio 2:

89.8

21kW

PSB3

: 53 / H / 20kW 

 

 

BBC Radio 3:

92.0

21kW

COM4

: 43 / H / 10kW 

 

 

BBC Radio 4:

103.6

21kW

COM5

: 46 / H / 10kW

BBC Radio Cymru:

94.2

21kW

COM6

: 50 / H / 10kW

 

 

BBC Radio Wales:

94.8

10kW

  

 

 

 

 

 

 

 

 

Digital Radio

 

 

 

 

 

 

 

 

 

BBC National (Block 12B)

 

 

 

 

 Digital One (Block 11D)

 

 

 

 

 

PRE-DIGITAL SWITCHOVER UHF TRANSMISSIONS

(Shutdown completed 18 November 2009)

Analogue Television 

 

 

 

Digital Television

 

 

 

 

 

 

 

 

 

Service

  Ch/Polar/e.r.p

 

 

 

 

Service

 Ch/Polar/e.r.p

BBC1

: 57 / H / 100kW

 

 

 

 

Mux1

: 50 / H / 1.0kW

BBC2

: 63 / H / 100kW  

 

 

 

 

Mux2

: 54 / H / 1.0kW

ITV1

: 60 / H / 100kW 

 

 

 

 

MuxA

: 58 / H / 1.0kW

S4C

: 53 / H / 100kW

 

 

 

 

MuxB

: 61 / H / 1.0kW

Ch5

: No Service

 

 

 

 

MuxC

: 64 / H / 1.0kW

 

 

 

 

 

 

 

MuxD

: 46 / H / 1.0kW

 

 

 

 

 

 

 

 

 


Arfon  Blaenplwyf  Carmel  Moel-y-Parc  Presely  St Hilary  Wenvoe

 

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