Full Freeview on the Llanddona (Isle of Anglesey, Wales) transmitter
 | Google Streetview |  | Google map |  | Bing map |  | Google Earth |  | 53.307,-4.128 or 53°18'25"N 4°7'41"W |  | LL58 8YB |
The symbol shows the location of the Llanddona (Isle of Anglesey, Wales) transmitter which serves 44,000 homes. The bright green areas shown where the signal from this transmitter is strong, dark green areas are poorer signals. Those parts shown in yellow may have interference on the same frequency from other masts.
Are there any planned engineering works or unexpected transmitter faults on the Llanddona (Isle of Anglesey, Wales) mast?
Llanddona transmitter - Llanddona transmitter: Possible effect on TV reception week commencing 11/11/2024 Pixelation or flickering on some or all channels 
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Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
The Llanddona (Isle of Anglesey, Wales) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: .
If you want to watch these channels, your aerial must point to one of the 80 Full service Freeview transmitters. For more information see the will there ever be more services on the Freeview Light transmitters? page.
Which Freeview channels does the Llanddona transmitter broadcast?
If you have any kind of Freeview fault, follow this Freeview reset procedure first.Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
The Llanddona (Isle of Anglesey, Wales) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: .
If you want to watch these channels, your aerial must point to one of the 80 Full service Freeview transmitters. For more information see the will there ever be more services on the Freeview Light transmitters? page.
Which BBC and ITV regional news can I watch from the Llanddona transmitter?
BBC Wales Today 1.2m homes 4.7%
from Cardiff CF5 2YQ, 210km south-southeast (164°)
to BBC Wales region - 206 masts.
ITV Cymru Wales 1.2m homes 4.7%
from Cardiff CF5 6XJ, 213km south-southeast (165°)
to ITV Wales region - 206 masts.
How will the Llanddona (Isle of Anglesey, Wales) transmission frequencies change over time?
| 1950s-80s | 1984-97 | 1997-98 | 1998-2009 | 2009-13 | 2013-18 | 2013-17 | 14 Nov 2018 | ||
| VHF | C/D E | C/D E | C/D E | E T | E T | E T | B E T | ||
| C1 | BBCtvwaves | ||||||||
| C40 | ArqB | ArqB | BBCA | ||||||
| C41 | SDN | ||||||||
| C43 | SDN | SDN | SDN | D3+4 | |||||
| C44 | ArqA | ||||||||
| C46 | ArqA | ArqA | ArqA | BBCB | |||||
| C47 | ArqB | ||||||||
| C50tv_off | ArqB | ||||||||
| C51tv_off | _local | _local | _local | _local | |||||
| C53tv_off | C4waves | C4waves | C4waves | BBCB | BBCB | BBCB | |||
| C57tv_off | BBC1waves | BBC1waves | BBC1waves | BBCA | BBCA | BBCA | |||
| C60tv_off | ITVwaves | ITVwaves | ITVwaves | -D3+4 | -D3+4 | -D3+4 | |||
| C63 | BBC2waves | BBC2waves | BBC2waves |
tv_off Being removed from Freeview (for 5G use) after November 2020 / June 2022 - more
Table shows multiplexes names see this article;
green background for transmission frequencies
Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W T
waves denotes analogue; digital switchover was 21 Oct 09 and 18 Nov 09.
How do the old analogue and currrent digital signal levels compare?
| Analogue 1-4 | 100kW | |
| BBCA, D3+4, BBCB | (-7dB) 20kW | |
| SDN, ARQA, ARQB | (-10dB) 10kW | |
| Mux 1*, Mux 2*, Mux A*, Mux B*, Mux C*, Mux D* | (-20dB) 1000W |
Which companies have run the Channel 3 services in the Llanddona transmitter area
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Monday, 13 May 2019
S
StevensOnln12:29 PM
Sue Bellringer: Have you checked for any loose or damaged cables or connections behind your TV? Please provide a full postcode so that we can see the predicted coverage at your location.
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Tuesday, 6 August 2019
C
CHRIS8:27 AM
Can we receive transmissions from llanddona in caernarfon?
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MikeP
9:07 AM
9:07 AM
CHRIS:
Please put your full post code into the Digital UK Coverage Checker at Digital UK - Coverage checker That will show you what transmitters are likely tom be receivable at your location and what chennel number it transmits on.
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Sunday, 18 August 2019
A
Alan Cefni Jones6:26 PM
I live on the shore`s of the Menai Straits directly opposite the Llanddona mast , i can see the mast from my living room . My signal strength is 67% and every time a large wagon passes my picture goes off and have to wait for signal to return , the road is below me and should be no interference problem which i can see . Could you please help me as it infuriates me when i am watching a program as i miss out bits usually at the wrong times , thank`s.
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MikeP
8:42 PM
8:42 PM
Alan Cefni Jones:
Where abouts is your aerial? Is it on the roof? In the loft? or are you using one in the same room as the TV set?
Ideally, you should have a good wideband aerial mounted outside above the roof so it is as far away from the traffic as is possible.
Without a full post code, we have no idea how close you are to the transmitter at Llanddona so cannot advise about signal strengths, but 67% seems a bit low if you are within eye sight.
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Tuesday, 12 November 2019
when I retune my TV I get all of the Wales programmes ie. S4C BBC Wales & ITV Wales etc. but when I switch off then back on again the next day all of the above have disappear and get only North West channels. What is going wrong
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MikeP
10:14 PM
10:14 PM
Eric Hewitt:
Your TV is not remembering the new channel settings. To cure that, unplug the aerail and perform an automatic tune. When that has completed, plug the aerial back in and then do another retune. The TV should now remember all the channels. Check that it has found the want Welsh service.
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Sunday, 15 December 2019
F
Fred8:56 PM
I'm in the North of Anglesey and the nearest transmitter is Llanddona. I've tried the automatic retune more than once but despite a 'high' signal strength I am missing lots of Freeview channels. I have 10, 14, 15, 18, 24, 33 then a huge gap to 100. It seems I'm not getting ArqA and ArqB? Could that mean I need a new aerial?
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Monday, 16 December 2019
C
Chris.SE1:43 AM
Fred:
Without a full postcode we can't say what your predicted reception might be. There maybe nothing wrong with the aerial if you are getting the main BBC and ITV channels.
Did you used to get the missing channels? You appear to be missing the 3 COM multiplexes SDN, ArqA & ArqB.
Have you changed anything lately?
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Wednesday, 15 January 2020
F
Fred3:57 PM
Amlwch
Chris.SE,
Sorry for the late reply only just got the email to say a comment had been added.
Postcode is LL68 9NE but the Penysarn side of the hill. I assume that hill must be the problem! I have not changed anything and not been here long enough to know if more channels were ever available.
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Fred's: mapF's Freeview map terrainF's terrain plot wavesF's frequency data F's Freeview Detailed Coverage
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