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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
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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.

MuxH/VFrequencyHeightModeWatts
PSB1
BBCA
 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, 250 BBC Red Button, plus 13 others

PSB2
D3+4
 H max
C43- (649.8MHz)255mDTG-20,000W
Channel icons
5 Channel 5, 6 ITV 2, 10 ITV3, 14 Film4, 15 Channel 4 +1 South ads, 18 More4, 26 ITV4, 30 E4 +1, 35 ITV1 +1 (Wales),

PSB3
BBCB
 H max
C46 (674.0MHz)255mDTG-20,000W
Channel icons
56 5SELECT, 101 BBC One HD Wales, 102 BBC Two HD (England), 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

COM4
SDN
 H -3dB
C41 (634.0MHz)255mDTG-810,000W
Channel icons
 E4 (Wales), 20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 41 Legend, 46 Channel 5 +1, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 74 Dave ja vu, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 203 CITV, 208 Pop Player, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 14 others

COM5
ArqA
 H -3dB
C44 (658.0MHz)255mDTG-810,000W
Channel icons
11 Sky Arts, 17 Really, 19 Dave, 31 E4 Extra, 36 pick, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 57 Smithsonian Channel, 60 Drama +1, 70 Quest +1, 75 Yesterday +1, 83 Together TV, 233 Sky News, plus 9 others

COM6
ArqB
 H -3dB
C47 (682.0MHz)255mDTG-810,000W
Channel icons
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 88 Classic Hits, 235 Al Jazeera Eng, plus 19 others

DTG-8 64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)

Are you trying to watch these 0 Freeview HD channels?


The Llanddona (Isle of Anglesey, Wales) mast is not one of the extended Freeview HD (COM7 and COM8) transmitters, it does not provide these high definition (HD) channels: .

If you want to watch these HD channels, either use Freesat HD, or move your TV aerial must point to one of the 30 Full Freeview HD transmitters. For more information see the want to know which transmitters will carry extra Freeview HD? 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
VHFC/D EC/D EC/D EE TE TE TB E T
C1BBCtvwaves
C40 ArqBArqBBBCA
C41SDN
C43SDNSDNSDND3+4
C44ArqA
C46ArqAArqAArqABBCB
C47ArqB
C50tv_offArqB
C51tv_off_local_local_local_local
C53tv_offC4wavesC4wavesC4wavesBBCBBBCBBBCB
C57tv_offBBC1wavesBBC1wavesBBC1wavesBBCABBCABBCA
C60tv_offITVwavesITVwavesITVwaves-D3+4-D3+4-D3+4
C63BBC2wavesBBC2wavesBBC2waves

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.

Comments
Friday, 4 February 2011
Transmitter engineering
sentiment_very_satisfiedOwner

6:46 AM

LLANDDONA transmitter - Freeview BBC Digital TV Reduced Quality from 00:41 today to 04:01 today [BBC]

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Transmitter engineering's 138,855 posts xx
Saturday, 5 February 2011
Transmitter engineering
sentiment_very_satisfiedOwner

7:08 AM

LLANDDONA transmitter - Freeview BBC Digital TV Reduced Quality from 00:41 yesterday to 04:01 yesterday [BBC]

link to this comment
Transmitter engineering's 138,855 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

7:08 AM

LLANDDONA transmitter - Freeview BBC Digital TV Reduced Quality from 00:41 yesterday to 04:01 yesterday [BBC]

link to this comment
Transmitter engineering's 138,855 posts xx
Tuesday, 12 April 2011
G
Gwyn
9:04 PM
Caernarfon

OK, this is a strange one. Live near Bethel Caernarfon, receive freeview (HD/SD) from Llanddona. 2 Months ago had picture breakup (100% signal strenght but signal quality fluctuated badly between 20%-90%). Traced fault to bad connection on aerial (40 element Yagi type, with masterhead amplifier), made tempoary repairs and restored signal/quality back to 100%.
Decided to buy a new aerial and went for a Televes 45HD, suppose to be the best ones around. Tried the TV (Panasonic G20) and the signal quality dropped again and fluctuates between 30% - 100% ???? it also affects other tv's in the house, not just the Pani.
The Televes has a forward gain of around 16dB and a built in intellegent masterhead amplifier, just wondering of this type of aerial is picking up noise from other sources. Have fitted new amplifier/ new PF100 cable from aerial to amplifier.
Finally fitted back the old aerial and the signal/quality is back to 100%, all perfect.
Any ideas anyone.
thanks
G Jones

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Gwyn's 6 posts GB
Briantist
sentiment_very_satisfiedOwner

9:05 PM

Gwyn: Sounds like you were overloading your system with too much signal strength.

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Briantist's 38,844 posts GB
G
Gwyn
9:10 PM
Caernarfon

Is this too much gain from the aerial itself, the masterhead amplifier is suppose to give the correct ouput regardless of signal strenght.
thanks

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Gwyn's 6 posts GB
G
Gwyn
9:17 PM
Caernarfon

If I bypass the Distribution amplifier that supplies the aerial with 12volts and connect the panasonic directly, is this worth a shot??
thanks
Gwyn

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Gwyn's 6 posts GB
Wednesday, 13 April 2011
Briantist
sentiment_very_satisfiedOwner

6:00 AM

Gwyn: This does sound problematic. You would not normally expect a Distribution amplifier to also power the masthead device.

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Briantist's 38,844 posts GB
G
Gwyn
7:01 AM
Caernarfon

Yes it does, but if no 12v is present at the masterhead amplifier the Televes masterhead amplifier would only be used as a loop through device in my understanding. i.e. no gain to compensate for the lenght of cable to the distribution amplifier. The most important factor is the gain of the aerial, this is around 16dB, if you amplify the signal you also amplify any noise picked up by that aerial.
Just going to try this with the masterhead off (acting as a loop through device) and feeding the aerial output to just one television just to prove the theory.
thanks
Gwyn

link to this comment
Gwyn's 6 posts GB
Briantist
sentiment_very_satisfiedOwner

8:04 AM

Gwyn: That sounds the most sensible thing to do. Not all mastheads will loopthough without the power, many will go into "no signal" mode.

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Briantist's 38,844 posts GB
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