Freeview Light on the Corris (Powys, Wales) transmitter
This transmitter has no current reported problems
The BBC and Digital UK report there are no faults or engineering work on the Corris (Powys, Wales) transmitter.
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The symbol shows the location of the Corris (Powys, Wales) transmitter which serves less than 500 homes.
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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.
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See terrain plotCorris 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 | C45 (666.0MHz) | 302m | 64QAM 8K 2/3
24.1Mb/s DVB-T MPEG2 | 2W |
| 
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 200 BBC Red Button, 700 BBC Radio 1, 701 BBC 1Xtra, 702 BBC Radio 2, 703 BBC Radio 3, 704 BBC Radio 4, 705 BBC Radio 5 Live, 706 BBC Radio 5 Live Sports Extra, 707 BBC 6 Music, 708 BBC Radio 4 Extra, 709 BBC Asian Network, 710 BBC World Service, 719 BBC Radio Wales, 720 BBC Radio Cymru,
|
PSB2
D3+4 | vertical max | C49 (698.0MHz) | 302m | 64QAM 8K 2/3
24.1Mb/s DVB-T MPEG2 | 2W |
| 
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 | C42 (642.0MHz) | 302m | 256QAM 32KE 2/3
40.2Mb/s DVB-T2 MPEG4 | 2W |
| 
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
Corris (Powys, 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 Corris transmitter
Self-help relays
| Glaspwll | Active deflector | 21 km NE Aberystwyth | 7 homes |
How the transmission frequencies change over time
| years | | 1984-97 | 1997-98 | 1998-2010 | 2010-13 | 2013-18 | 2013-18 | |
| aerial group | | B E | B E | B E | B E | B E | B E | |
| C39 | | BBC1 | BBC1 | BBC1 | | | | |
| C42 | | C4 | C4 | C4 | BBCB | BBCB | BBCB | |
| C45 | | BBC2 | BBC2 | BBC2 | BBCA | BBCA | BBCA | |
| 700 | C49 | | ITV | ITV | ITV | D3+4 | D3+4 | D3+4 | |
| 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 WItalics for
analogue, digital switchover was Wednesdays 10th February and 10th March 2010.
Comparison of old analogue and current digital signal levels
| Analogue 1-4 | 6W | |
| BBCA, D3+4, BBCB | (-4.8dB) 2W | |
History of Channel 3 in the Blaen-Plwyf transmitter area
| Jan 1958-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. Corris 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
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.
Martin BrettSaturday 5 December 2009 4:12PM
Machynlleth We spend time cruising the canals of England. Currently the boat has an omnidirectional aerial on the metal roof of the canal boat that tends to give a poor analogue signal if one is lucky! I feel we will need to change to a wide band directional aerial on a mast that will have to be set up each evening as we moor the canal boat. What mast height would be advisable and what are the pros and cons regarding Log periodic versus Yagi arrays?
Is there any way I can find the nearest/best transmitter other than one of the wideband signal locators. Can the grid coordinates (as shown on a satnav) be entered to a site to predict signal?
TIA
MartinMartin Brett: Give me a few days to sort out finishing it off, and you will be able to use national grid or latlong to get a prediction.
Martin BrettWednesday 9 December 2009 9:31PM
Machynlleth Thanks Briatist, that will be very helpful. Any views on log periodic versus Yagi? I feel that as the array will need to be stored whilst not in use the log periodic may be a more convenient shape. The predictions tend to be based on 10 metres above ground level but this is not really practical or feasible to erect on a regular basis. I suppose the metal roof (50ft x 7ft) will be a massive ground plane. Is that going to effect the array?
MartinMartin Brett: You should use whatever aerial you find best.
The metal roof isn't a problem as long as the aerial is at least 1 meter above it.
CORRIS transmitter - Over the next week Corris relay: TV (analogue) Service Shutdowns, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK] Martin BrettSaturday 29 May 2010 5:52PM
Machynlleth I am well in the green area on the map for Corris transmitter at a position that is almost directly south of the relay and has Blaen Plwyf almost perfectly behind the vertically polarised aerial on my roof which is pointed at the Corris relay. As there is only the so called freeview lite available from the Corris relay and I can just detect a very poor signal at channels 24 & 28 I thought I would try a group A (Horizontal) pointed directly at Blaen Plwyf. At the same height as the current group B. The signals I could get were just as poor (unwatchable) using the horizontally polarized group A until I got up to the two Corris channels where these were only slightly worse than on the vertical aerial pointed at the Corris relay so the green area south of the Corris relay is definitely not served by stronger signals from other transmitters unless Preselli is the source. As Corris needs group B and I believe Preselli is also group B is it likely that pointing to Preselli would be worth a try? I am willing to do almost anything to get more than the lousy selection of programs on freeview light. Preselli is quite a long way off whereas I can clearly see the Corris relay.
Regards,
MartinMartin: The first thing to consider is that Freesat is quite a lot easier (and cheaper) to install than a complicated Freeview system.
Looking at your position, the problem for you is not the group of your aerial, but how far down you are located.
To stand a reasonable chance of good Freeview reception from one of the non-local transmitters, you will need as long an aerial pole as you can use.
And even then you might be frustrated. Freesat+HD would be a better choice if you want more channels. Martin BrettWednesday 29 September 2010 9:01PM
Machynlleth Who makes the decision as to what channels are on a mux? I have two total rubbish channels (Rabbit and Gay Rabbit) and two time shifted channels (ITV2+1 and Ch4+1) in my freeview lite from Corris. If these were relocated to one of the other muxes then I could have worthwhile channels such as ITV3, ITV4, Film4 etc.
I have fsfs but Murdock frequently knocks off a channel here and a channel there with the caption "your viewing card needs replacing" meaning he wants more money so I would dearly like to dump sky. I suppose I'll have to buy a freesat box. Any suggestions as to the best makes and guide prices?
Thanks,
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