menuMENU    UK Free TV logo Freeview



Click to see updates

Full Freeview on the Llanddona (Isle of Anglesey, Wales) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps53.307,-4.128 or 53°18'25"N 4°7'41"Wsa_postcodeLL58 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.

This transmitter has no current reported problems

The BBC and Digital UK report there are no faults or engineering work on the Llanddona (Isle of Anglesey, Wales) transmitter.

Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name

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.

 H max
C40 (626.0MHz)255mDTG-20,000W
Channel icons
1 BBC One (SD) Wales, 2 BBC Two Wales, 9 BBC Four, 23 BBC Three, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, plus 14 others

 H max
C43- (649.8MHz)255mDTG-20,000W
Channel icons
5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 South ads, 18 More4, 26 ITV4, 28 ITVBe, 30 E4 +1, 35 ITV1 +1 (Wales),

 H max
C46 (674.0MHz)255mDTG-20,000W
Channel icons
46 5SELECT, 101 BBC One HD Wales, 102 BBC Two HD Wales, 104 Channel 4 HD South ads, 105 Channel 5 HD, 106 BBC Four HD, 110 Channel 4 HD (Wales), 204 CBBC HD, 205 CBeebies HD, plus 1 others

 H -3dB
C41 (634.0MHz)255mDTG-810,000W
Channel icons
 E4 (Wales), 20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 78 TCC, 81 Blaze +1, 83 Together TV, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 30 others

 H -3dB
C44 (658.0MHz)255mDTG-810,000W
Channel icons
11 Sky Mix, 17 Really, 19 Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 Drama +1, 65 That's TV 2, 70 Quest +1, 74 Yesterday +1, 75 That's 90s, 233 Sky News, plus 11 others

 H -3dB
C47 (682.0MHz)255mDTG-810,000W
Channel icons
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! romance, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! romance mix, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 235 Al Jazeera Eng, plus 18 others

DTG-8 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?

regional news image
BBC Wales Today 1.2m homes 4.7%
from Cardiff CF5 2YQ, 210km south-southeast (164°)
to BBC Wales region - 206 masts.
regional news image
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-80s1984-971997-981998-20092009-132013-182013-1714 Nov 2018

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

Jan 1958-Jul 1968Television Wales and the West
Jul 1968-Feb 2004Harlech Television
Feb 2004-Dec 2014ITV plc
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV Daybreak•
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Llanddona was not an original Channel 3 VHF 405-line mast: the historical information shown is the details of the company responsible for the transmitter when it began transmitting Channel 3.

Saturday, 1 December 2018
Transmitter engineering

4:31 AM

LLANDDONA transmitter - DAB: BBC National DAB Radio Off Air from 10:44 on 29 Nov to 11:20 on 29 Nov. FM: Radio 1 FM Weak Signal from 10:40 on 29 Nov to 15:05 on 29 Nov, Radio 2 FM Weak Signal from 10:40 on 29 Nov to 15:05 on 29 Nov, Radio 3 FM Weak Signal from 10:40 on 29 Nov to [BBC]

link to this comment
Transmitter engineering's 148,949 posts xx flag
Sunday, 2 December 2018
T.M. James
2:08 PM

Could you please tell me when COM 7 AND COM 8 will be available from the LLANDDONA transmitter?
I am particularly interested in receiving BBC4 HD. Occasionally I can receive it from the 'Moel y Parc' transmitter but it is 'very touch and go' and can not be depended upon in my region

link to this comment
T.M. James's 2 posts GB flag
T.M. James
2:08 PM

Could you please tell me when COM 7 AND COM 8 will be available from the LLANDDONA transmitter?
I am particularly interested in receiving BBC4 HD. Occasionally I can receive it from the 'Moel y Parc' transmitter but it is 'very touch and go' and can not be depended upon in my region.

Thank you.

link to this comment
T.M. James's 2 posts GB flag

2:17 PM

T.M. James: COM7 & COM8 are not being added to any additional transmitters. They are temporary services which are expected to close by 2022.

link to this comment
StevensOnln1's 3,601 posts GB flag
Thursday, 27 December 2018
G H Davies
8:54 PM

Is there a direct correspondence between the Winter Hill
Mux1, Mux2, Mux3, Mux 4, Mux 5, Mux 6, and the Llanddona
Psb1,Psb 2, Psb 3, Psb 4, Psb 5, Psb 6 .? Please.

link to this comment
G H Davies's 1 post GB flag

9:11 PM

G H Davies:

Llanddona has multiplexes named PSB1, PSB2, PSB3, COM3 (SDN), COM5 (ARQA) and COM6 (ARQB). This is exactly the same naming scheme as at Winter Hill, but the muiltiplexes are on different frequencies so as to avoid interfering with each other or other transmssions in the same reception area. The naming of a multiplex is for convenience mainly but all full Freeview transmitters carry all six multiplexes and a further 30 main transmitters also carry the COM7 and COM8 multiplexes. In addition there are a large number of Freeview Light transmitters that carry the 3 PSB services only. Apart from regional variations, for local news for example, the programming is largely the same for all national programming.

link to this comment
MikeP's 3,056 posts GB flag
Thursday, 10 January 2019
fn engineers
12:11 PM

Since the 700Mhz clearance event on the 14th Nov 2018, I have had a large number of customers reporting problems in receiving Com 4, 5 and 6 including myself. I can report that signal strength in each case is always good but signal quality has deteriorated and is now very poor with frequent vision breakup. I am personally having problems with Com 6 where signal strength is consistently above 95%, however quality is always around 20%. I live in direct line of sight of the Llanddona transmitter and previous to the frequency changes these mux's were not giving me and other people any problems. Please can you tell me what else changed on the 14th of November?

link to this comment
fn engineers's 2 posts GB flag

4:39 PM

fn engineers:

You should by now know that signal strengths above about 85% are likely to give pixilation or loss of channels. Too much signal strength is a bad thing (there's an article on this wen=bsite about that, you can search for it). In such cases reducing the signal; strength to between 60% and 85% usualy solves the problems.

link to this comment
MikeP's 3,056 posts GB flag
fn engineers
10:48 PM

Yes, I agree MikeP. However, when I remove the dist. amplifier and have direct feed from the antenna the strength will drop to around 74% but quality is then around 10% with an unwatchable picture. The 2 PSB mux's which are double the power are not giving me any problems whatsoever (strength about the same and quality around 80%). The weather obviously affects things and evenings worse, so I am beginning to wonder whether there are any underlying signals from Ireland which are affecting reception. I have an elderly lady who lives down the road that's completely lost picture from Com4 & 5 since the frequency change with com 6 appearing occasionally but her TV will show channel id and indicate a signal strength of around 60% for these muxs.

link to this comment
fn engineers's 2 posts GB flag
Friday, 11 January 2019

11:10 AM

fn engineers:

I suggest you have a look at the Digital UK Coverage Checker at Digital UK - Coverage checker to ensure that the correct channels are being used.

link to this comment
MikeP's 3,056 posts GB flag
Select more comments

Your comment please
Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

If you have no satellite signal, see Sky Digibox says 'No Signal' or 'Technical fault'

If you have other problems, please provide a full (not partial) postcode (or preferably enter it in box at the top right) and indicate where if aerial is on the roof, in the loft or elsewhere.

UK Free TV is here to help people. If you are rude or disrespectful all of your posts will be deleted and you will be banned.

Privacy policy: UK Free Privacy policy.