Freeview Light on the Caernarfon (Gwynedd, Wales) transmitter
 | Google map |  | Bing map |  | Google Earth |  | 53.142,-4.265 or 53°8'30"N 4°15'54"W |  | LL55 1BT |
The symbol shows the location of the Caernarfon (Gwynedd, Wales) transmitter which serves 900 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 Caernarfon (Gwynedd, Wales) transmitter._______
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 Caernarfon (Gwynedd, Wales) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: U&Yesterday, 4seven, 5Action, 5STAR, 5USA, Al Jazeera Eng, Al Jazeera English, Blaze, Blaze +1, Challenge, Channel 5 +1, DMAX, E4 Extra, YAAAS!, Film4 +1, Food Network, FRANCE 24 (in English), GREAT! action, GREAT! christmas, GREAT! movies, GREAT! romance mix, 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, That's 90s, That's TV 2, Together TV, TRUE CRIME, TRUE CRIME XTRA, U&Dave, U&Dave ja vu, U&Drama +1, U&W.
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 Caernarfon 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 | C24 (498.0MHz) | 28m | DTG- | 5W |
 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 | C27 (522.0MHz) | 28m | DTG- | 5W |
 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), 71 That’s 60s, | |||||
| PSB3 BBCB | V max | C21+ (474.2MHz) | 28m | DTG- | 5W |
 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 Caernarfon (Gwynedd, Wales) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: U&Yesterday, 4seven, 5Action, 5STAR, 5USA, Al Jazeera Eng, Al Jazeera English, Blaze, Blaze +1, Challenge, Channel 5 +1, DMAX, E4 Extra, YAAAS!, Film4 +1, Food Network, FRANCE 24 (in English), GREAT! action, GREAT! christmas, GREAT! movies, GREAT! romance mix, 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, That's 90s, That's TV 2, Together TV, TRUE CRIME, TRUE CRIME XTRA, U&Dave, U&Dave ja vu, U&Drama +1, U&W.
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 Caernarfon transmitter?
BBC Wales Today 1.2m homes 4.7%
from Cardiff CF5 2YQ, 196km south-southeast (160°)
to BBC Wales region - 206 masts.
ITV Cymru Wales 1.2m homes 4.7%
from Cardiff CF5 6XJ, 199km south-southeast (161°)
to ITV Wales region - 206 masts.
How will the Caernarfon (Gwynedd, Wales) transmission frequencies change over time?
| 1984-97 | 1997-98 | 1998-2009 | 2009-13 | 31 Dec 2018- | |||||
| A K T | A K T | A K T | A K T | A K T | |||||
| C21 | BBC1waves | BBC1waves | BBC1waves | +BBCB | BBCB | ||||
| C24 | ITVwaves | ITVwaves | ITVwaves | BBCA | BBCA | ||||
| C27 | BBC2waves | BBC2waves | BBC2waves | D3+4 | D3+4 | ||||
| C31 | C4waves | C4waves | C4waves |
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?
| BBCA, D3+4, BBCB | 5W | |
| Analogue 1-4 | (-4dB) 2W |
Which companies have run the Channel 3 services in the Llanddona transmitter area
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Wednesday, 16 January 2013
G
G.Richards4:17 PM
When does the Caernarfon transmitter come back on line please?
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G.Richards: Caernarfon receives its signal from Arfon which means that if it is off, then your transmitter will be as well.
Refer to:
Digital UK - Planned Engineering Works
There is engineering works at Arfon 0900 to 1700 today.
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Saturday, 4 December 2021
I have had no free view connection for two days now. I live in ll54 5al area. And contrary to statements there is no problem in thisl there is no problem there is. Last week no signal for a day. Sort this out its not on
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Clare's: ...
Sunday, 5 December 2021
C
Chris.SE4:19 AM
Clare Dobie:
Not quite sure why you've posted on the Caernarfon transmitter page, it's a very very low power relay, miles from you and your postcode is not predicted to get any signals from it. You are predicted to get good signals from the Trefor relay.
By the way, this is an independent technical helpsite, we are not the broadcasters or transmitter engineering.
If you are getting signals from Trefor, your aerial should be pointing fractionally west of NW (bearing 307 degrees) with its rods (or squashed Xs) vertical. There is also predicted good signals from Preseli however they may be more subject to changes in some weather conditions, a reliable local aerial installer may know (the aerial would be pointing fractionally west of due S). There's also predicted reception from Blaenplwyf but those signals would be poor/variable/or none depending on multiplex (groups of channels).
None of the transmitters mentioned have had/got any reported faults recently that I can find. With the recent weather conditions it's possible Trefor may have suffered brief power outages.
I would check with your neighbours if they are receiving Freeview OK because there's a possibility the weather may have done damage to your aerial installation.
I would check that your aerial seems intact and pointing in the correct direction and that your downlead looks undamaged (especially if it is old). Also check all your coax plugs, connections, flyleads etc, especially if you've changed anything in your installation recently, unplug connectors check for corrosion or other problems and reconnect them. Flyleads are a common problem, try swapping/changing them. See what signal strengths and quality you are getting for the multiplexes (groups of channels) shown in your TV's tuning section.
The correct UHF channel tuning for Trefor is C32, C34, C35 (C means channel) for the 3 PSB multiplexes.
If you have changed anything in your setup, make sure you don't have any HDMI leads near unscreened/poorly screened flyleads/aerial leads as HDMI has been known to cause interference.
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