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 
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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
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Friday, 20 May 2011
N
Nick11:35 PM
Woodbridge
thanks Brian. If the signal quality does not drop, but then we get these problems, it just means signal is not good enough?
I am experimenting with a digibox on the few channels I can sometimes get, with booster. There are ghostly vertical lines about 3 ins apart moving fairly rapidly across the screen, left to right. Any ideas please? Sig strength almost nil.
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Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Saturday, 21 May 2011
N
Nick9:34 AM
Woodbridge
Dear Brian,
Whether before or after switchover, is there any reason why , if you can receive one channel within a certain mux group, you should not receive all channels in that same group? I have a feeling that when I can get anything at all, I am getting the odd channel from various groups, rather than all the available channels within whatever mux I am on at the time. Many thanks.
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Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Monday, 23 May 2011
Nick: You will be able to receive a multiplex, or not - see How digital television works | ukfree.tv - independent free digital TV advice .
Sometimes older boxes had a few problems if a channel changed name, and you sometimes find that the "old name" channel will appear "blank" and the "new name" channel will be in the 800-899 range.
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N
Nick11:25 AM
Woodbridge
Thanks Brian. Hope you also saw previous message about ghostly image on freeview.
We are getting most peculiar interference on channel 51 analogue at present. This time a constant ghostly rectangle, from top to bottom of screen, 6 inches wide, 3 inches in from the left hand side of the screen. We used to get something like that sometimes from French secam analogue. What it is to be on the east coast!
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Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
N
Nick11:30 AM
Woodbridge
I notice one of the multiplexes transmits on channel 50+. I do not know what it means by '+', but am wondering if it could remotely be causing these problems. Presumably it means it is very close to 51?
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Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Nick: No, "+" means there is a positive ofset of 166Hz, thus 706.2MHz rather than 706MHz. You might also see "-" where there is a negative ofset of 166Hz. C51 is 714.0MHz as the channels are 8MHz wide.
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Nick: You should never get "ghosting" on Freeview, it is impossible for it to occur. If you have anything like that you probably have a SCART loop (too many SCART cables) in your system.
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Nick3:55 PM
Woodbridge
thanks Brian, but i only have the one scart, freeview to tv whilst testing. Very curious.
I have a group B high gain aerial. Would there be any benefit in substituting a wideband for out of group channels? I ask because wideband aerials must be poor at extreme ends of ch21 and 68, and what I have is already 'in the middle.' Thanks.
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Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Nick: A group B is unsuitable for digital reception before or after switchover from Sudbury, no matter what the "gain". See "Transmission frequencies" above.
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Tuesday, 24 May 2011
N
Nick9:25 AM
Woodbridge
Dear Brian,
Group b covers ch 35-53, ie all the analogue channels used by Sudbury. I do not understand how a wideband areial would improve things as it must surely be a compromise to try to include channels as far apart as 21 and 69. I have seen graphs of the performance of wideband aerials which show a tailing off of gain at either end. Surely that is exactly what my group b aerial does too?.
I am still playing with the digibox which I have set to install. When the wind is in the right direction, I get channels from ALL the mux shown for Sudbury, but not all the channels within every mux. This really puzzles me. Notable absentees are ITV 1, c4 and C5. Whoever decided we should have QVC and Babestation instead!
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Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
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