Freeview Light on the Llandecwyn (Gwynedd, Wales) transmitter
 | Google map |  | Bing map |  | Google Earth |  | 52.914,-4.018 or 52°54'51"N 4°1'5"W |  | LL47 6YT |
The symbol shows the location of the Llandecwyn (Gwynedd, Wales) transmitter which serves 3,600 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 Llandecwyn (Gwynedd, Wales) mast?
Llandecwyn transmitter - Llandecwyn transmitter: Possible effect on TV reception week commencing 04/12/2023 Screen may go black 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.
H/V: aerial position (horizontal or vertical)
The Llandecwyn (Gwynedd, Wales) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: 4seven, 5Action, 5STAR, 5USA, Al Jazeera Eng, Al Jazeera English, Blaze, Blaze +1, Challenge, Channel 5 +1, Dave, Dave ja vu, DMAX, Drama +1, E4 Extra, YAAAS!, Film4 +1, Food Network, GREAT! action, GREAT! christmas, GREAT! movies extra, GREAT! movies, HGTV, HobbyMaker, ITV2 +1, ITV3 +1, ITV4 +1, ITVBe +1, Legend, PBS America, Quest +1, Quest Red, Really, Sky Mix, Sky News, Talking Pictures TV, TCC, That's 90s, That's Christmas, Together TV, TRUE CRIME, TRUE CRIME XTRA, W, Yesterday +1.
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 Llandecwyn 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.
| Mux | H/V | Frequency | Height | Mode | Watts |
| PSB1 BBCA | V max | C32 (562.0MHz) | 301m | DTG- | 60W |
 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 | |||||
| PSB2 D3+4 | V max | C34 (578.0MHz) | 301m | DTG- | 60W |
 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), | |||||
| PSB3 BBCB | V max | C35 (586.0MHz) | 301m | DTG- | 60W |
 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 | |||||
Are you trying to watch these 44 Freeview channels?
The Llandecwyn (Gwynedd, Wales) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: 4seven, 5Action, 5STAR, 5USA, Al Jazeera Eng, Al Jazeera English, Blaze, Blaze +1, Challenge, Channel 5 +1, Dave, Dave ja vu, DMAX, Drama +1, E4 Extra, YAAAS!, Film4 +1, Food Network, GREAT! action, GREAT! christmas, GREAT! movies extra, GREAT! movies, HGTV, HobbyMaker, ITV2 +1, ITV3 +1, ITV4 +1, ITVBe +1, Legend, PBS America, Quest +1, Quest Red, Really, Sky Mix, Sky News, Talking Pictures TV, TCC, That's 90s, That's Christmas, Together TV, TRUE CRIME, TRUE CRIME XTRA, W, Yesterday +1.
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 Llandecwyn transmitter?
BBC Wales Today 1.2m homes 4.7%
from Cardiff CF5 2YQ, 167km south-southeast (162°)
to BBC Wales region - 206 masts.
ITV Cymru Wales 1.2m homes 4.7%
from Cardiff CF5 6XJ, 169km south-southeast (163°)
to ITV Wales region - 206 masts.
How will the Llandecwyn (Gwynedd, Wales) transmission frequencies change over time?
| 1984-97 | 1997-98 | 1998-2009 | 2009-13 | 2013-18 | 2013-17 | 14 Nov 2018 | |||
| C/D E | C/D E | C/D E | C/D E | C/D E T | C/D E T | A K T | |||
| C32 | BBCA | ||||||||
| C34 | D3+4 | ||||||||
| C35 | BBCB | ||||||||
| C49tv_off | BBCA | BBCA | |||||||
| C54tv_off | C4waves | C4waves | C4waves | BBCB | BBCB | BBCB | |||
| C58tv_off | BBC1waves | BBC1waves | BBC1waves | D3+4 | D3+4 | D3+4 | |||
| C61 | ITVwaves | ITVwaves | ITVwaves | BBCA | |||||
| C64 | 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 | 300W | |
| BBCA, D3+4, BBCB | (-7dB) 60W |
Local transmitter maps
Llandecwyn Freeview Llandecwyn DAB Llandecwyn AM/FM Llanddona TV region BBC Wales WalesWhich companies have run the Channel 3 services in the Llanddona transmitter area
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Is the transmitter output the same in all directions?
Radiation patterns withheldWednesday, 30 May 2018
Transmitter engineering
3:05 PM
3:05 PM
LLANDECWYN transmitter - Freeview: BBC Digital TV Off Air from 11:07 on 28 May to 13:01 on 28 May, BBC Digital TV Off Air from 06:02 today to 09:40 today, HD Digital TV Off Air from 11:07 on 28 May to 13:01 on 28 May. FM: Radio 1 FM Off Air from 11:07 on 28 May to 13:01 on 28 May [BBC]
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Thursday, 31 May 2018
Transmitter engineering
6:05 AM
6:05 AM
LLANDECWYN transmitter - Freeview: BBC Digital TV Off Air from 11:07 on 28 May to 13:01 on 28 May, BBC Digital TV Off Air from 06:02 yesterday to 09:40 yesterday, HD Digital TV Off Air from 11:07 on 28 May to 13:01 on 28 May. FM: Radio 1 FM Off Air from 11:07 on 28 May to 13:01 o [BBC]
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Transmitter engineering
9:05 AM
9:05 AM
LLANDECWYN transmitter - Freeview: BBC Digital TV Off Air from 06:02 yesterday to 09:40 yesterday, BBC Digital TV Off Air from 11:07 on 28 May to 13:01 on 28 May, HD Digital TV Off Air from 11:07 on 28 May to 13:01 on 28 May. FM: Radio 1 FM Off Air from 11:07 on 28 May to 13:01 o [BBC]
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Friday, 1 June 2018
Transmitter engineering
6:05 AM
6:05 AM
LLANDECWYN transmitter - Freeview: BBC Digital TV Off Air from 11:07 on 28 May to 13:01 on 28 May, BBC Digital TV Off Air from 06:02 on 30 May to 09:40 on 30 May, HD Digital TV Off Air from 11:07 on 28 May to 13:01 on 28 May. FM: Radio 1 FM Off Air from 11:07 on 28 May to 13:01 o [BBC]
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Saturday, 2 June 2018
Transmitter engineering
6:05 AM
6:05 AM
LLANDECWYN transmitter - Freeview: BBC Digital TV Off Air from 06:02 on 30 May to 09:40 on 30 May. [BBC]
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Monday, 4 June 2018
T
Tina McDonnell9:13 AM
Why am I unable to get BBC channels in the morning in the Porthmadog area?? It is fine in the evening and I have no trouble getting other channels. Is there a problem with this? My neighbour also has the same issue. Neither of us has a satellite dish, just the outside aerial. Please tell me what the issue is. Thanks
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S
StevensOnln110:14 AM
Tina McDonnell: If the problem is happening at the same time every day then the most likely explanation is that you're getting electrical interference from something nearby operating on a timer. Do your (or your immediate neighbours) have anything with an electric motor operating at the times that you're loosing signal?
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T
Tina McDonnell10:41 AM
Tina McDonnell: I don't think so but I will keep an eye out. It was not working at 6am this morning but all other channels were?? I am a bit perplexed about it really and frustrated too. My neighbour also reports the same thing. Could the recent storm affect it? Then why does it work in the evenings?? What can I do about it and can I report it to anyone?? Thanks
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S
StevensOnln111:34 AM
Tina McDonnell: Transmitters don't reduce their broadcast power at certain times of the day so a transmitter fault is very unlikely. You need to track down the source of the interference and get whoever is responsible to repair or replace the equipment causing it.
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Tuesday, 12 June 2018
Transmitter engineering
6:04 AM
6:04 AM
LLANDECWYN transmitter - Freeview: BBC Digital TV Off Air; DSO related from 00:03 today to 04:43 today, HD Digital TV Off Air; DSO related from 00:03 today to 04:43 today. [BBC]
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