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Freeview Light on the Cefn Mawr A (Denbighshire, Wales) transmitter

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52.961,-3.093 or 52°57'38"N 3°5'34"W

LL20 7RT

4G at 800MHz (at800) Freeview reception issues

When 800MHz 4G mobile broadband services start there will be 1 multiplex in the higher risk range (C21-23, C30, C59-60): C60: BBCB
See How do I know if the 4G broadband will overload my Freeview? and Full UK map of 4G issue areas for details.

This transmitter has no current reported problems

The BBC and Digital UK report there are no faults or engineering work on the Cefn Mawr A (Denbighshire, Wales) transmitter. Click to recheck

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The symbol shows the location of the Cefn Mawr A (Denbighshire, Wales) transmitter which serves less than 500 homes.

Other maps:

Moel-Y-Parc region

BBC Wales

Wales

Radiation patterns

Map key

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.

List by multiplex|List by channel number|List by channel name|See terrain plot

Cefn Mawr A transmitter Freeview broadcasts

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	Aerial position	Frequency	Height	Mode	Watts
PSB1 BBCA	vertical max	C57 (762.0MHz)	245m	64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2	50W
	1 BBC One Wales, 2 BBC Two Wales, 7 BBC Three, 9 BBC Four, 70 CBBC Channel, 71 CBeebies, 80 BBC News, 81 BBC Parliament, 301 301, plus 14 others
PSB2 D3+4	vertical max	C53 (730.0MHz)	245m	64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2	50W
	3 ITV (Wales), 4 S4C, 5 Channel 5 Part Network ads, 6 ITV 2, 8 Channel 4 South ads, 13 Channel 4+1 South ads, 14 More 4, 33 ITV +1 (Wales),
PSB3 BBCB	vertical max	C60 (786.0MHz)	245m	256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4	50W
	101 BBC One HD Wales, 102 BBC Two HD (England), 103 ITV HD (ITV Central West), 104 Channel 4 HD South ads, plus 1 others 232 The Space,

Looking for these 26 channels?

The Cefn Mawr A (Denbighshire, Wales) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: 4Music, 4seven, 5*, 5USA, Al Jazeera English, Challenge, Channel 5 +1, CITV, Community Channel, Dave, Dave ja vu, E4+1, Film 4, Food Network, ITV 2 +1, ITV 3, ITV 4, Movie Mix, PICK TV, Quest, Really, RT English , Sky News, The Zone, VIVA, Yesterday.

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.

Regional news from the Cefn Mawr A transmitter

BBC Wales Today 1.2m homes 4.7%
from Cardiff CF5 2YQ, 163km south
to BBC Wales region - 205 masts.

ITV Cymru Wales 1.2m homes 4.7%
from Cardiff CF5 6XJ, 167km south
to ITV Wales region - 205 masts.

How the transmission frequencies change over time

	years	1984-97	1997-98	1998-2009	2009-13	2013-18	2013-18
	aerial group	C/D E	C/D E	C/D E	C/D E	C/D E	C/D E
700	C53				D3+4	D3+4	D3+4
	C54	C4	C4	C4
	C57				BBCA	BBCA	BBCA
	C58	BBC1	BBC1	BBC1
	C60				BBCB	BBCB	BBCB
800	C61	ITV	ITV	ITV
	C64	BBC2	BBC2	BBC2

orange background for multiplexes names more

green background for transmission frequencies

lilac background for power levels in watts

800MHz band: 4G mobile to start in 2013

700MHz band: possible 4G in 2019 more

600MHz band: new or moved digital TV services more

Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W
Italics for analogue, digital switchover was Wednesdays 28th October and 25th November 2009.

Comparison of old analogue and current digital signal levels

Analogue 1-4	160W
BBCA, D3+4, BBCB	(-5.1dB) 50W

History of Channel 3 in the Moel-Y-Parc transmitter area

Sep 1962-Jul 1964	Wales (West and North) Television (Teledu Cymru)
Jul 1964-Jul 1968	Television Wales and the West
Jul 1968-Feb 2004	Harlech Television
Feb 2004-Dec 2014	ITV plc

Feb 1983-Dec 1992	TV-am•
Jan 1993-Sep 2010	GMTV•
Sep 2010-Dec 2014	ITV Daybreak•

• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Cefn Mawr A 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.

Your comments: most recent posts are at the bottom

First comments Earlier comments ◊

Your comments are always welcome. Please use the form below to add your thoughts or questions to this page. We will get back to you as soon as we can.

Transmitter engineering
Saturday 23 March 2013 4:32AM

CEFN MAWR A transmitter - Freeview: BBC Digital TV Off Air from 08:00 yesterday to 11:54 yesterday, BBC Digital TV Off Air from 01:40 today, HD Digital TV Off Air from 08:00 yesterday to 11:54 yesterday, HD Digital TV Off Air from 12:22 yesterday to 12:43 yesterday, HD Digital TV [BBC]

52,999 posts platinum

Transmitter engineering
Saturday 23 March 2013 7:32AM

CEFN MAWR A transmitter - Freeview: BBC Digital TV Off Air from 08:00 yesterday to 11:54 yesterday, BBC Digital TV Off Air from 01:40 today, HD Digital TV Off Air from 12:22 yesterday to 12:43 yesterday, HD Digital TV Off Air from 12:22 yesterday to 12:43 yesterday, HD Digital TV [BBC]

52,999 posts platinum

Transmitter engineering
Saturday 23 March 2013 7:31PM

CEFN MAWR A transmitter - Freeview: BBC Digital TV Off Air from 08:00 yesterday to 11:54 yesterday, BBC Digital TV Off Air from 01:40 today to 18:07 today, HD Digital TV Off Air from 12:22 yesterday to 12:43 yesterday, HD Digital TV Off Air from 12:22 yesterday to 12:43 yesterday, [BBC]

52,999 posts platinum

Transmitter engineering
Sunday 24 March 2013 4:32AM

CEFN MAWR A transmitter - Freeview: BBC Digital TV Off Air from 08:00 on 22 Mar to 11:54 on 22 Mar, BBC Digital TV Off Air from 01:40 yesterday to 18:07 yesterday, HD Digital TV Off Air from 12:22 on 22 Mar to 12:43 on 22 Mar, HD Digital TV Off Air from 12:22 on 22 Mar to 12:43 on [BBC]

52,999 posts platinum

Transmitter engineering
Sunday 24 March 2013 7:31PM

CEFN MAWR A transmitter - Freeview: BBC Digital TV Off Air from 08:00 on 22 Mar to 11:54 on 22 Mar, BBC Digital TV Off Air from 01:40 yesterday to 18:07 yesterday, HD Digital TV Off Air from 08:00 on 22 Mar to 11:54 on 22 Mar, HD Digital TV Off Air from 12:22 on 22 Mar to 12:43 on [BBC]

52,999 posts platinum

Transmitter engineering
Monday 25 March 2013 4:32AM

CEFN MAWR A transmitter - Freeview: BBC Digital TV Off Air from 08:00 on 22 Mar to 11:54 on 22 Mar, BBC Digital TV Off Air from 01:40 on 23 Mar to 18:07 on 23 Mar, HD Digital TV Off Air from 12:22 on 22 Mar to 12:43 on 22 Mar, HD Digital TV Off Air from 12:22 on 22 Mar to 12:43 on [BBC]

52,999 posts platinum

Transmitter engineering
Monday 25 March 2013 10:32PM

CEFN MAWR A transmitter - Freeview: BBC Digital TV Off Air from 08:00 on 22 Mar to 11:54 on 22 Mar, BBC Digital TV Off Air from 01:40 on 23 Mar to 18:07 on 23 Mar, HD Digital TV Off Air from 08:00 on 22 Mar to 11:54 on 22 Mar, HD Digital TV Off Air from 12:22 on 22 Mar to 12:43 on [BBC]

52,999 posts platinum

Transmitter engineering
Tuesday 26 March 2013 7:32AM

CEFN MAWR A transmitter - Freeview: BBC Digital TV Off Air from 01:40 on 23 Mar to 18:07 on 23 Mar, BBC Digital TV Off Air from 08:00 on 22 Mar to 11:54 on 22 Mar, HD Digital TV Off Air from 01:40 on 23 Mar to 18:07 on 23 Mar, HD Digital TV Off Air from 08:00 on 22 Mar to 11:54 on [BBC]

52,999 posts platinum

Transmitter engineering
Wednesday 27 March 2013 4:32AM

CEFN MAWR A transmitter - Freeview: BBC Digital TV Off Air from 01:40 on 23 Mar to 18:07 on 23 Mar, HD Digital TV Off Air from 01:40 on 23 Mar to 18:07 on 23 Mar. [BBC]

52,999 posts platinum

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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.

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