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Freeview Light on the Dolybont (Ceredigion, Wales) transmitter

first published this on - UK Free TV
sa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps52.481,-4.022 or 52°28'51"N 4°1'18"Wsa_postcodeSY24 5LY

 

The symbol shows the location of the Dolybont (Ceredigion, Wales) transmitter which serves 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 Dolybont (Ceredigion, 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 Dolybont 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
C39 (618.0MHz)126mDTG-20W
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
C42 (642.0MHz)126mDTG-20W
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
C45 (666.0MHz)126mDTG-20W
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 Dolybont (Ceredigion, 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 Dolybont transmitter?

regional news image
BBC Wales Today 1.2m homes 4.7%
from Cardiff CF5 2YQ, 122km south-southeast (154°)
to BBC Wales region - 206 masts.
regional news image
ITV Cymru Wales 1.2m homes 4.7%
from Cardiff CF5 6XJ, 125km south-southeast (156°)
to ITV Wales region - 206 masts.

Are there any self-help relays?

BrynrodynActive deflector7 km N Aberystwyth1 homes 200 caravans

How will the Dolybont (Ceredigion, Wales) transmission frequencies change over time?

1984-971997-981998-20102010-1331 Oct 2018
C/D EC/D EC/D EC/D E TB E K T
C39BBCA
C42D3+4
C45BBCB
C53tv_offBBCB
C54tv_offC4wavesC4wavesC4waves
C57tv_offBBCA
C58tv_offBBC1wavesBBC1wavesBBC1waves
C60tv_offD3+4
C61ITVwavesITVwavesITVwaves
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 10 Feb 10 and 10 Mar 10.

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

Analogue 1-4 33W
BBCA, D3+4, BBCB(-2.2dB) 20W

Which companies have run the Channel 3 services in the Blaenplwyf 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. Dolybont 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, 5 October 2023
L
Liam Williams
8:53 AM

Hi DAB radio signal is very weak or does not work at all within the village of Dol y bont. I have tried different DAB recovers and all struggle to get a signal.
Is this an issue with the transmitter

link to this comment
Liam Williams's 1 post GB flag
C
Chris.SE
sentiment_very_satisfiedPlatinum

11:10 AM

Liam Williams:

I'm afraid it's simply because the coverage in the area is fairly poor, with the BBC National multiplex the only one you may get and then maybe not a good signal. You are unlikely to get a reliable service.

link to this comment
Chris.SE's 4,081 posts GB flag
S
Steve Donaldson
sentiment_satisfiedSilver

5:17 PM

Liam Williams: Looking at the map of transmitters, I think Blaenplwyf is really the only DAB transmitter you might possibly receive, at just over 8 miles out. The problem is that you are in a valley and it doesn't run in the direction of the transmitter, hence the terrain is casting a shadow.

Blaenplwyf transmits two of the national multiplexes, the BBC National being far more likely to be able to be received than the D1 National, this because the antenna transmitting the BBC multiplex is higher up the mast and the strength of the signal coming in your direction is much stronger.

Here are the details of the Blaenplwyf DAB transmissions. For each multiplex I have given the channel number, the height of the transmitting antenna above ground, the effective radiated power of transmitter, the number of dBs down in your direction and, in brackets, the effective radiated power in your direction:

BBC National: 12B 125m 4.67kW -2.0dB (2.94kW)
D1 National: 11D 83m 1.4kW -2.7dB (0.752kW)

From these figures, what is really of interest are the facts that the BBC antenna is higher up. As the terrain is anything but flat, it casts shadows. The shadows will be larger the lower down the antenna is. The other thing to note is the that the D1 National antenna is throwing out a much less powerful signal in your direction than the BBC one. If you're struggling to get the BBC then you aren't likely to get the D1 multiplex.

The transmitter isn't omnidirectional, meaning the full signal power isn't being thrown out around all 360 degrees. The dB figure is the amount it is down on the full signal power on a bearing of 20degrees out from the transmitter (in the direction Dol-y-Bont), hence I used this to calculate the power in the direction of Dol-y-Bont (shown in brackets).

There is a BBC National transmitter at Machynlleth, but this is blocked by very high ground and too weak in your direction to be of any use.

The next two DAB transmitters distance-wise and that are of any significant power are Arfon (39 miles) and Presely (45 miles). I mention them not because I think you might be able to receive them, because these are the "next best", hence why I say I think that your only possibility, if any, is Blaenplwyf.

Thus, your most likely chance of reception is in the direction of the Blaenplwyf transmitter. And if you're struggling to get the BBC National on 12B, you aren't likely to get the D1 National on 11D.

link to this comment
Steve Donaldson's 185 posts GB flag
Friday, 6 October 2023
Transmitter engineering
sentiment_very_satisfiedOwner

11:02 PM

DOLYBONT transmitter - Freeview: Weather conditions may be affecting your reception from 6 Oct 20:49. . [BBC]

link to this comment
Transmitter engineering's 148,949 posts GB flag
Saturday, 7 October 2023
Transmitter engineering
sentiment_very_satisfiedOwner

5:08 AM

DOLYBONT transmitter - Freeview: Weather conditions may be affecting your reception from 6 Oct 20:49 until 6 Oct 21:56. . [BBC]

link to this comment
Transmitter engineering's 148,949 posts GB flag
Sunday, 8 October 2023
Transmitter engineering
sentiment_very_satisfiedOwner

11:20 PM

DOLYBONT transmitter - Freeview: Weather conditions may be affecting your reception from 8 Oct 21:42. Weather conditions may be affecting your reception from 6 Oct 20:49 until 6 Oct 21:56. . [BBC]

link to this comment
Transmitter engineering's 148,949 posts GB flag
Monday, 9 October 2023
Transmitter engineering
sentiment_very_satisfiedOwner

7:48 AM

DOLYBONT transmitter - Freeview: Weather conditions may be affecting your reception from 8 Oct 21:42 until 8 Oct 21:46. Weather conditions may be affecting your reception from 6 Oct 20:49 until 6 Oct 21:56. . [BBC]

link to this comment
Transmitter engineering's 148,949 posts GB flag
Wednesday, 11 October 2023
Transmitter engineering
sentiment_very_satisfiedOwner

11:20 PM

DOLYBONT transmitter - Freeview: Weather conditions may be affecting your reception from 8 Oct 21:42 until 8 Oct 21:46. . [BBC]

link to this comment
Transmitter engineering's 148,949 posts GB flag
Friday, 12 January 2024
Transmitter engineering
sentiment_very_satisfiedOwner

1:48 PM

DOLYBONT transmitter - Freeview: Weather conditions may be affecting your reception from 12 Jan 11:29. . [BBC]

link to this comment
Transmitter engineering's 148,949 posts GB flag
Saturday, 13 January 2024
Transmitter engineering
sentiment_very_satisfiedOwner

5:10 AM

DOLYBONT transmitter - Freeview: Weather conditions may be affecting your reception from 12 Jan 11:29 until 12 Jan 21:16. . [BBC]

link to this comment
Transmitter engineering's 148,949 posts GB flag
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