Full Freeview on the Preseli (Pembrokeshire, Wales) transmitter
 | Google Streetview |  | Google map |  | Bing map |  | Google Earth |  | 51.944,-4.661 or 51°56'38"N 4°39'40"W |  | SA41 3QR |
The symbol shows the location of the Preseli (Pembrokeshire, Wales) transmitter which serves 57,000 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 Preseli (Pembrokeshire, Wales) transmitter._______
Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
The Preseli (Pembrokeshire, Wales) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: .
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 Preseli 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.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
The Preseli (Pembrokeshire, Wales) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: .
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 Preseli transmitter?
BBC Wales Today 1.2m homes 4.7%
from Cardiff CF5 2YQ, 111km east-southeast (118°)
to BBC Wales region - 206 masts.
ITV Cymru Wales 1.2m homes 4.7%
from Cardiff CF5 6XJ, 110km east-southeast (120°)
to ITV Wales region - 206 masts.
Are there any self-help relays?
| Abergynolwyn | Active deflector | Gwynedd | 84 homes |
| Caerberllan | Active deflector | ||
| Cwmtydu A/d | Active deflector | 17 km NNE Newcastle Emlyn | 10 homes 50 caravans |
| Drefelin | Active deflector | 20 km NNW Carmarthen | 36 homes |
| Poppit Sands | Active deflector | 39 km NE Carmarthen Caravan Park | |
| Rhyd-yr-onnen | Active deflector | 20 km N Aberystwyth | 20 homes caravan site |
How will the Preseli (Pembrokeshire, Wales) transmission frequencies change over time?
| 1962-80s | 1984-97 | 1997-98 | 1998-2009 | 2009-13 | 2013-18 | 2013-17 | 31 Oct 2018 | ||
| VHF | B E T | B E T | B E T | W T | K T | K T | K T | ||
| C8 | ITVwaves | ||||||||
| C30 | _local | _local | _local | _local | |||||
| C37 | C5waves | C5waves | |||||||
| C39 | +ArqB | +ArqB | ArqB | ||||||
| C40 | BBC2waves | BBC2waves | BBC2waves | +BBCB | +BBCB | BBCB | |||
| C42 | -SDN | -SDN | -SDN | SDN | |||||
| C43 | ITVwaves | ITVwaves | ITVwaves | +BBCA | +BBCA | +BBCA | BBCA | ||
| C45 | -ArqA | -ArqA | -ArqA | ArqA | |||||
| C46 | BBC1waves | BBC1waves | BBC1waves | +D3+4 | +D3+4 | +D3+4 | D3+4 | ||
| C49tv_off | +ArqB | ||||||||
| C50tv_off | C4waves | C4waves | C4waves | +BBCB |
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 1-5 | 100kW | |
| BBCA, D3+4, BBCB | (-7dB) 20kW | |
| SDN, ARQA, ARQB | (-10dB) 10kW | |
| Mux A*, Mux B* | (-17dB) 2kW | |
| Mux 1*, Mux 2*, Mux C*, Mux D* | (-20dB) 1000W |
Which companies have run the Channel 3 services in the Preseli transmitter area
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Tuesday, 10 April 2012
PRESELY transmitter - Freeview BBC Digital TV Weak Signal from 10:03 yesterday to 10:25 today HD Digital TV Weak Signal from 10:35 today to 10:51 today [BBC]
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Wednesday, 11 April 2012
PRESELY transmitter - Freeview BBC Digital TV Weak Signal from 10:03 on 09 Apr to 10:25 yesterday HD Digital TV Weak Signal from 10:35 yesterday to 10:51 yesterday [BBC]
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Thursday, 12 April 2012
PRESELY transmitter - Freeview BBC Digital TV Weak Signal from 10:03 on 09 Apr to 10:25 on 10 Apr HD Digital TV Weak Signal from 10:35 on 10 Apr to 10:51 on 10 Apr [BBC]
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Friday, 27 April 2012
O
Owen Hesford9:51 AM
Newcastle Emlyn
SA38 9JH
Why are Tx,s radiation paterns with held and not in the public domain??We at Newcastle Emlyn receive our terestial tv from the relay mast at Llandfriog which in turn receives the tv signal from the Perseli mast.It is proposed to site a wind farm at Llandfriog in line between the two masts. This I feel will cause untold tv signal problems for the community.CAN you please comment on this? Thankyou
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Owen's: mapO's Freeview map terrainO's terrain plot wavesO's frequency data O's Freeview Detailed Coverage
M
Mike Dimmick5:02 PM
Owen Hesford: The owner of this website, Brian Butterworth (Briantist), has asked the BBC several times for the radiation patterns. Their most recent response is at Update on transmitter radiation patterns (BBC FOI request) | ukfree.tv - independent free digital TV advice .
For the frequencies used by Llandyfriog, we have actually told the international community that we will be broadcasting on them from Blaenplwyf (near Aberystwyth) at 40 kW. We are using them at Blaenplwyf, but only at 10 kW, so we can reuse them at a number of other sites in west Wales: see UK TV Frequency map - channel C22 (482.0MHz) before switchover map | ukfree.tv - independent free digital TV advice for the map. If Ireland were to officially discover that we weren't really using them to the extent we negotiated for, it might cause problems when renegotiating.
As for your wind farm, Llandyfriog currently uses a single log-periodic antenna to receive the signal from Presely. I would expect that use of trough antennas or arrays of logs, and/or diversity reception, should overcome any reduction of signal level. If all else fails, the data can be delivered to the relay site via fibre-optic cable rather than off-air, although this imposes an additional cost to the broadcasters.
The National Planning Policy Framework says, in section 44, "Local planning authorities [...] should ensure that [...] they have considered the possibility of the construction of new buildings or other structures interfering with broadcast and telecommunications services." The local authority could insist that the wind farm operator pays for any work required to restore broadcasting, if it does cause enough of a problem.
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Tuesday, 8 May 2012
PRESELI transmitter - seli Transmitter works 9 May 2012: Engineering transmitter work will take place between 00:01hrs and 06:00hrs. TV services that will be disrupted: Analogue services - n/a Digital services - PSB1, PSB2, PSB3, COM4, COM5 and COM6 will be subject to periods of shutdown. [DUK] Over the next week Preseli main transmitter: TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
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Wednesday, 9 May 2012
PRESELY transmitter - Freeview HD Digital TV Off Air from 00:31 today [BBC]
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PRESELY transmitter - Freeview HD Digital TV Off Air from 00:31 today to 03:30 today [BBC]
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Thursday, 10 May 2012
PRESELY transmitter - Freeview HD Digital TV Off Air from 00:31 yesterday to 03:30 yesterday [BBC]
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Friday, 11 May 2012
PRESELY transmitter - Freeview HD Digital TV Off Air from 00:31 on 09 May to 03:30 on 09 May [BBC]
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