Full Freeview on the Sudbury (Suffolk, England) transmitter
 | Google Streetview |  | Google map |  | Bing map |  | Google Earth |  | 52.005,0.786 or 52°0'17"N 0°47'8"E |  | CO10 5NG |
The symbol shows the location of the Sudbury (Suffolk, England) transmitter which serves 440,000 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.
Are there any planned engineering works or unexpected transmitter faults on the Sudbury (Suffolk, England) mast?
Sudbury transmitter - Sudbury transmitter: Possible effect on TV reception week commencing 18/11/2024 Pixelation or flickering on some or all channels 
_______
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 Sudbury (Suffolk, England) 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 Sudbury 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 Sudbury (Suffolk, England) 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 Sudbury transmitter?
BBC Look East (East) 0.8m homes 3.2%
from Norwich NR2 1BH, 77km north-northeast (24°)
to BBC East region - 27 masts.
70% of BBC East (East) and BBC East (West) is shared output
ITV Anglia News 0.8m homes 3.2%
from NORWICH NR1 3JG, 78km north-northeast (24°)
to ITV Anglia (East) region - 26 masts.
All of lunch, weekend and 80% evening news is shared with Anglia (West)
Are there any self-help relays?
| Felixstowe West | Transposer | 1000 homes +1000 or more homes due to expansion of affected area? | |
| Witham | Transposer | 14 km NE Chelmsford. | 118 homes |
How will the Sudbury (Suffolk, England) transmission frequencies change over time?
| 1984-97 | 1997-98 | 1998-2011 | 2011-13 | 1 Aug 2018 | |||||
| B E T | B E T | B E T | E T | K T | |||||
| C29 | SDN | ||||||||
| C31 | ArqA | ||||||||
| C35 | C5waves | C5waves | |||||||
| C37 | ArqB | ||||||||
| C41 | ITVwaves | ITVwaves | ITVwaves | D3+4 | D3+4 | ||||
| C44 | BBC2waves | BBC2waves | BBC2waves | BBCA | BBCA | ||||
| C47 | C4waves | C4waves | C4waves | BBCB | BBCB | ||||
| C51tv_off | BBC1waves | BBC1waves | BBC1waves | ||||||
| C56tv_off | ArqB | ||||||||
| C58tv_off | SDN | ||||||||
| C60tv_off | -ArqA |
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 6 Jul 11 and 20 Jul 11.
How do the old analogue and currrent digital signal levels compare?
| Analogue 1-4 | 250kW | |
| SDN, ARQA, ARQB, BBCA, D3+4, BBCB | (-4dB) 100kW | |
| Analogue 5 | (-7dB) 50kW | |
| Mux 2* | (-14.9dB) 8.1kW | |
| Mux B* | (-15.2dB) 7.5kW | |
| Mux 1* | (-15.5dB) 7kW | |
| Mux A* | (-17dB) 5kW | |
| Mux C* | (-22.2dB) 1.5kW | |
| Mux D* | (-23.6dB) 1.1kW |
Which companies have run the Channel 3 services in the Sudbury transmitter area
|
|
Wednesday, 4 May 2011
N
Nick3:53 PM
Woodbridge
Thank you Brian. I can foresee many angry viewers. Don't see why we let them get away with it. As a generalisation, will a viewer in Aldeburgh itself, relatively high ground, continue to get a good signal after this degeneration? If not, I fail to see why Aldeburgh should stay on air.
I would also appreciate general info re getting a few freesat channels on Sky. Yesterday and a history channel are not free on Sky, but I can tune my box manually to get them, I believe, if I knew the various data to put in. How do I find out this data?
In the past I have manually tuned to foreign sats with extra dish, but after a few days the box 'forgets' and I have to re-enter. Why?
Thanks.
| link to this comment |
Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Nick: There won't be "many angry viewers" as the problem only effects locations where Bluebell Hill is directly behind, everywhere else in the Aldeburgh coverage area won't have such a problem because the aerial will not pick up the Bluebell Hill signals.
No, you can't "tune into" pay channels, they are protected by the SSSL encryption system.
| link to this comment |
Thursday, 5 May 2011
N
Nick8:23 AM
Woodbridge
You are saying Bluebell Hill will interfere with the newly digital Aldeburgh at some point for viewers effectively north of the Aldeburgh xmitter? I am confused again, sorry, as I thought you just agreed that it would be foreign xmitters changing frequency which would cause its signal interference.
| link to this comment |
Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Nick: No. I am saying that some people on the edge of Aldeburgh coverage area who are also in a direct line (south south east) between Aldeburgh and Bluebell Hill - that's you - will have the problem.
The point about "foreign transmitters" was a general point about why some prediction points have a falling off of levels after switchover.
| link to this comment |
N
Nick8:30 AM
Woodbridge
Re Sky.
There are some channels such as 'Yesterday' which Sky expects us to pay for which are free on freesat. The Sky box can be manually tuned to see freesat channels. How do I find the relevant data I must input, eg frequency,to see Yesterday on freesat via my Sky box? Why when I set up my Sky box to hold such channels does it only do so for a few days and then 'forget', so I have to put the info in again? Pace box.
| link to this comment |
Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Nick: No, the channels are encrypted. Do you not think people would have found that out?
| link to this comment |
M
Mike Dimmick4:04 PM
Nick: Brian's claim about 'directly in line' is wrong. He persists in reporting, incorrectly, that aerials receive as much signal from behind as they do in front. In fact the level received from behind is significantly less than that from in front - although it is not zero, so a very powerful or close transmission from behind can still be picked up by the box.
Also, aerials have cross-polar rejection. Transmissions are polarized, with the electrons vibrating side-to-side (horizontal polarization) or up-and-down (vertical). For best results the aerial has to be oriented the same way as the transmission. Again, they pick up far less signal from the opposite polarization. Aldeburgh transmits on vertical polarization while Sudbury and Bluebell Hill use horizontal polarization.
It's not clear how cross-polar rejection and the front/back ratio interact. Digital UK's prediction model only allows a maximum of 16 dB of rejection from both sources, the same as the maximum from either source. (Most aerials perform better than this.)
I think Digital UK's predictor has all sources of foreign interference down as occurring in 2013, rather than actually following the foreign switchover dates. In practice many of the foreign interferers have already switched over.
| link to this comment |
Friday, 6 May 2011
N
Nick12:28 AM
Woodbridge
Thanks Brian and Mike.
Brian, I think we still are at cross purposes over Sky. I realize Sky encripts, for example, 'Yesterday.' Freesat does not. You can receive Freesat channels on the Sky box if you know the various data you can input manually into the Sky box, a different set of data for each freesat channel you want to see, just as you can put a different dish on Sky and manually tune into channels from ,for example, Hispasat. I was asking where I can find the data for freesat 'Yesterday', frequencies etc, so I can see the freesat version on my Sky box. I also wanted to know why Sky 'forgets' these extra channels after a few days.
| link to this comment |
Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
N
Nick9:31 AM
Woodbridge
Thank you Brian. You knocked me into touch there!
I would like to return to my last question in general terms, though. If I want to look at a freesat channel on my Sky box, where do i find the data I have to put manually into the Sky box to find that channel? I think there may be a mag called 'what sat' still going, but is there an internet site that displays it?
Why does the Sky box only retain these 'extra channels' which I manually input for a few days?
Many thanks.
| link to this comment |
Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Select more comments
Your comment please