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Freeview Light on the Mynydd Pencareg (Carmarthenshire, Wales) transmitter

first published this on - UK Free TV
sa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps52.067,-4.077 or 52°4'2"N 4°4'39"Wsa_postcodeSA48 8ED

 

The symbol shows the location of the Mynydd Pencareg (Carmarthenshire, Wales) transmitter which serves 2,600 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.

This transmitter has no current reported problems

The BBC and Digital UK report there are no faults or engineering work on the Mynydd Pencareg (Carmarthenshire, 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 Mynydd Pencareg 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
 V max
C41 (634.0MHz)460mDTG-24W
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

PSB2
D3+4
 V max
C44 (658.0MHz)460mDTG-24W
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),

PSB3
BBCB
 V max
C47 (682.0MHz)460mDTG-24W
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/V: aerial position (horizontal or vertical)

Are you trying to watch these 44 Freeview channels?

the effected channels
the effected channels
the effected channels
the effected channels

The Mynydd Pencareg (Carmarthenshire, 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! movies, GREAT! romance mix, GREAT! romance, 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 TV 2, 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 Mynydd Pencareg transmitter?

regional news image
BBC Wales Today 1.2m homes 4.7%
from Cardiff CF5 2YQ, 86km southeast (138°)
to BBC Wales region - 206 masts.
regional news image
ITV Cymru Wales 1.2m homes 4.7%
from Cardiff CF5 6XJ, 87km southeast (141°)
to ITV Wales region - 206 masts.

How will the Mynydd Pencareg (Carmarthenshire, Wales) transmission frequencies change over time?

1984-971997-981998-20092009-132013-182013-1731 Oct 2018
C/D EC/D EC/D EC/D EC/D E TC/D E TB E K T
C41BBCA
C44D3+4
C47BBCB
C49tv_off BBCABBCA
C54tv_offC4wavesC4wavesC4wavesBBCBBBCBBBCB
C58tv_offBBC1wavesBBC1wavesBBC1wavesD3+4D3+4D3+4
C61ITVwavesITVwavesITVwavesBBCA
C64BBC2wavesBBC2wavesBBC2waves

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 19 Aug 09 and 16 Sep 09.

How do the old analogue and currrent digital signal levels compare?

Analogue 1-4 120W
BBCA, D3+4, BBCB(-7dB) 24W

Which companies have run the Channel 3 services in the Preseli transmitter area

Sep 1962-Jul 1964Wales (West and North) Television (Teledu Cymru)
Jul 1964-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. Mynydd Pencareg 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.

Is the transmitter output the same in all directions?

Radiation patterns withheld

Comments
Thursday, 21 July 2022
G
Glyn Hammond
1:50 PM

Not receiving C47 HD services. Using a wideband aerial
replacement for rusted old group C/D. Vertical mounted on outside roof position.
No HD services for last 3 months.
Mynydd Pencarreg mast can be seen from my roof top. C41 & C44 quality 100. Signal strength 51 C41 & 41 C44.
C47 Quality and Signal both 0.

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Glyn Hammond's 5 posts GB flag
S
StevensOnln1
sentiment_very_satisfiedPlatinum

2:14 PM

Glyn Hammond: Those signal strength readings look quite low, in general you should be aiming for somewhere in the range of 70% to 90% for reliable reception. C47 is very close to the 700MHz band which is now used for 4G/5G mobile services, so there could potentially be some interference if once of the mobile networks have deployed 700MHz nearby. It might be worth contacting Restore TV (the organisation setup and funded by the mobile networks to resolve 700 & 800MHz interference issues - see link below) who should send out a free plug-in filter if they believe you may be affected. It's also worth checking for any loose or damaged cables or connections which could be contributing to the reduced signal strength.

If you provide a full postcode we can see your predicted reception and may be able to offer further advice.

https://restoretv.uk

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StevensOnln1's 3,606 posts GB flag
G
Glyn Hammond
3:26 PM
Aberaeron

StevensOnln1:
Thank you for your quick reply.
Postcode is SA48 7LT

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Glyn Hammond's 5 posts GB flag
Glyn's: mapG's Freeview map terrainG's terrain plot wavesG's frequency data G's Freeview Detailed Coverage
S
StevensOnln1
sentiment_very_satisfiedPlatinum

4:39 PM

Glyn Hammond: Although you said that you can see the transmitter from roof height, you are 6km away and the transmitter output is only 24 watts. RestoreTV are not currently predicting any mobile interference at your postcode, although it's worth bearing in mind that this could potentially become an issue in the future. It may be necessary to fit an amplifier to overcome the low signal strength, which should be as close as possible to the aerial (i.e. a masthead amplifier mounted on the aerial pole or in the loft with as short a cable run as possible from the aerial) rather than behind the TV where it would only be able to amplify an already weak signal). It may be worth talking to a reputable local installer who is familiar with the area and can measure the signal strength at the aerial to see how much is being lost in the cable run to your TV.

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StevensOnln1's 3,606 posts GB flag
G
Glyn Hammond
5:44 PM

StevensOnln1: Thank you. Yes. I will try to amplify the signal. the signal

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Glyn Hammond's 5 posts GB flag
C
Chris.SE
sentiment_very_satisfiedPlatinum

10:48 PM

Glyn Hammond:

Before you rush off to get an amplifier, what is the state of your coax?
How long ago was the aerial replaced? Was the coax replaced at the same time with quality double screened (eg.CT100 standard) coax?

If it's old coax and there's been any ingress of water at anytime, if the outer sheath has become brittle etc. this will all affect the signal at the set. Certain problems can cause "standing waves" in the coax which can be specific to one frequency, and maybe in your case affect C47. Other problems can just cause severe attenuation especially the higher frequencies.

Were you getting the HD multiplex before the aerial was replaced? If so, I'd be having a close look at the coax if it wasn't replaced. If it was, a thorough check of all the connections.

If you've never had the HD multiplex then may interference could be an issue. Check you haven't got any older equipment (eg.VCR's etc) with RF output operating below C47.
I take it you haven't got any splitters for providing signal to more than one device.

Even though a signal strength reading at the set of 51 for C44 seems low, I'm surprised that it's all 0 at C47.

Should it turn out to be a case of needing an amplifier, make sure it's one with a variable gain control. Too much signal can also cause problems, especially if there are any mobile masts nearby. I would be trying to get a filter from restoretv.uk in any event.

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Chris.SE's 4,102 posts GB flag
Friday, 22 July 2022
G
Glyn Hammond
8:56 AM

Chris.SE: Thank you for the additional comment..
I have changed the aerial only. I had been receiving C47 at that time.HD signal lost April this year.
All channels lost this week as the amplified splitter has become faulty. Pixelating and loss of signal.
I have one tv working to c41 & 44 by connecting the aerial direct to its downlead.
There is no signal on c47. No engineering work.

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Glyn Hammond's 5 posts GB flag
S
StevensOnln1
sentiment_very_satisfiedPlatinum

9:30 AM

Glyn Hammond: Now that you've told us you have an amplified splitter, that seems the most likely culprit. I'd replace that before you do anything else.

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StevensOnln1's 3,606 posts GB flag
C
Chris.SE
sentiment_very_satisfiedPlatinum

11:07 AM

Glyn Hammond:

Connect the aerial direct to the TV and see what signal strength and quality you get on each channel.

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Chris.SE's 4,102 posts GB flag
G
Glyn Hammond
1:10 PM

Chris.SE: I've ordered a replacement amplified splitter.
After moving the aerial to a point where I get best signal on c41 I now have following
C41 61; C44 50 and C47 32 signal readings for tv to aerial.
Should have splitter on Monday. It has a 4g filter. Fingers are crossed.
Thank you

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Glyn Hammond's 5 posts GB flag
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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.

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