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 18/11/2024 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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Wednesday, 24 August 2011
I
Iain Nicol9:16 PM
Leeds
I'm at LS17 9LP (Yorkshire). We've had digital for 3 or 4 years, and have recently got 2 issues. They have happened since I followed the on- screen instructions to re tune after 20th August.
Firstly - the digital signal fluctuates during the afternoon. From midday until around 8pm, we get breakup or even total loss on all channels. Reception is perfectly good the rest of the time.
Secondly, since we retuned, our "local" news on BBC (channel 1) seems to think we live in Lincolnshire. To get the Yorkshire news, we have to tune to channel 825
We have a wideband amplified aerial mounted on the wall of the house, horizontally aligned pointing at 194 degrees (to Emley Moor) direct into a sky box. The signal goes from there into a 4 way splitter for distribution to sets around the house. This configuration allows sky to also be distributed on analogue.
Any ideas why we get this fluctuation, and why the locality has changed?
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Iain's: mapI's Freeview map terrainI's terrain plot wavesI's frequency data I's Freeview Detailed Coverage
Thursday, 25 August 2011
Iain Nicol: Please see Digital Region Overlap | ukfree.tv - independent free digital TV advice and Freeview intermittent interference | ukfree.tv - independent free digital TV advice . You may need to do this - My Freeview box has no EPG, is blank on FIVE, ITV3, ITV4, ITV2+1, has no sound or the channel line up is wrong | ukfree.tv - independent free digital TV advice .
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Thursday, 27 October 2011
L
Lucy Jones9:37 AM
27th october no transmittion digital tv for amlwch port
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Lucy Jones: Yes, that's correct, as it says above
"Over the next week Llanddona main transmitter: TV (digital) Liable to interruption"
Please do not adjust your set, just wait for the services to be restored.
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Wednesday, 18 January 2012
K
Keith1:16 PM
Holyhead
Our Aerial is on the roof and since last October the slightest bit of wind has caused disruption to our service, we live in a windy area so this happens alot.
I see from this website the Llanddona transmitter has been have engineering works since about the time the interruption started.
How long will it be before the transmitter will be interruption free.
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Keith's: mapK's Freeview map terrainK's terrain plot wavesK's frequency data K's Freeview Detailed Coverage
Friday, 20 January 2012
Keith: The information is only provided about engineering information on a week-by-week basis.
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K
Keith9:17 AM
Holyhead
Thanks Briantist is there a way I can find out if the engineering work is causing the problem
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Keith's: mapK's Freeview map terrainK's terrain plot wavesK's frequency data K's Freeview Detailed Coverage
Monday, 23 January 2012
Keith: The only way you can do this is to wait until the work is complete and see if the services come back.
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Sunday, 29 January 2012
H
Hilary jones12:39 PM
Caernarfon
We have a bush freeview plus box. All of the channels play very clearly, but none of the BBC channels display any Event Information, which means we do not know what is going to be on, and cannot set Programes to record. All other channels are okay. Our previous freeview box did display BBC info. We have tried changing the box for a new one, and tried it on a different tv, but get the same result.
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Hilary's: mapH's Freeview map terrainH's terrain plot wavesH's frequency data H's Freeview Detailed Coverage
Monday, 30 January 2012
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