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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Monday, 2 July 2012
B
Ben8:11 PM
Clacton-on-sea
CH56 and CH58 back after another rescan! Cheers for your help!
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Ben's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
N
Nick8:24 PM
Please would someone say which channels Sudbury is using? The info at the top of the page is useless.
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Andy: See postings by Nick immediately above yours. He is a stone's throw from you off Woodbridge Walk and says that in his area only Public Service channels can be received.
See the terrain plot from the Sudbury transmitter to your approximate location:
Terrain between ( m a.g.l.) and (antenna m a.g.l.) - Optimising UK DTT Freeview and Radio aerial location
As you can see, the path of the signal runs close to the ground for quite a few miles. Obviously there are objects on the ground, so it is not surprising that reception isn't good.
Imagine if the transmitter was sending out a beam of light, then consider trees and buildings that are likely to be in the way.
See here for the full list of Freeview services:
DMOL Post-DSO Multiplex Channel Allocations
The PSB multiplexes are the Public Service Broadcaster ones. The COMs are the Commercial ones which have limited coverage with respect to the PSBs. Nick has been unable to receive the COMs from Sudbury.
Based his comments, I get the feeling that you may well be limited to Public Service channels. Or the COMs may be intermittent. Which channels are causing problems (PSBs, COMs or both)? Does each caravan have its own aerial?
Digital UK predictor considers Sudbury to be "marginal" at your location, and likewise Aldeburgh. The latter is PSB-only.
The predictor should be regarded as a guide. Local obstructions such as trees and buildings aren't taken into account. It may be a clue as to likelihood of success of reception.
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Tuesday, 3 July 2012
D
Dee9:03 AM
Colchester
For years I had no issue or problem watching ANY Freeview channel from my location in Marks Tey, Essex .
Around three or four months ago overnight I lost a swathe of channels, leaving me with just 32 channels (19 tv,11 radio,2 text).
This was I discovered from these very pages, the next part of the Sudbury transmitter ongoing works, which would lead eventually to all the channels being restored on the 27th June......
June 27th arrived and hey presto...all channels restored to their former glory,although, on some of the channels the reception was initially iffy and a little pixellated, this gradually was ironed out during the day.
All was good until the middle of the following day when for no reason all the newly stored channels disappeared and once again I am left with just the same 32 channels I had prior to the 27th.
I have a wideband Arial and am asking anyone here with some knowledge as to why this is possibly happening.
If the arial is no good then why was it good enough for a day and a half following the power increase?
I have trawled the net looking for answers and it seems I am not alone in this despite Sudbury reporting no issues with their output.
Thanks in anticipation.
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Dee's: ...
N
Nick10:07 AM
Many thanks JB
Please note, all who are trying to help with my problems, I am talking about two separate locations, one five miles north of Orford, one five miles south. The southern one is better, but still poor, apart from stuff put out on ch 41 and 44. Until 27 June, all was fine at both, except for Challenge, Pick, Yesterday, but even they came through, at both, sometimes, since then, it has all gone to pot.
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N
Nick10:12 AM
Please can someone help with this one?
At a location with the aerial on Sudbury but strong signal also from Aldeburgh, my box tunes itself to stations from ch23, Aldeburgh, and then the same channels from Sudbury on ch41.
When I view, which one of these transmitters am I watching? It would not matter except that I would imagine Aldeburgh would be more prone to pixellating, as when we had analogue, the Aldeburgh picture used to break up and be very ghosty as that is not where the aerial is pointed or polarised for.
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D
david C10:38 AM
Ipswich
Dee , I live just outside Ipswich , and did exactly the same as you .Re tuned on the 27th Jnue and had all the channels , these have now disappeared. The power has been taken down on the channels and there is now a message at the top of this page to say there is work being done on the transmitter . lets hope by next week they have it all sorted
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david's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Dee: Based on the fact that you are only 9 miles from the transmitter, the problem may be too much signal. See Freeview signals: too much of a good thing is bad for you | ukfree.tv - independent free digital TV advice
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Nick: When a receiver goes through its automatic tuning process, it scans all channels. Having done this it then has to "decide" which of the channels it is to go with, where duplicates are found.
In this case it is going with those from Aldeburgh. This is obviously not the desired result.
The solution is to unplug the aerial for the first 30% of the scan so that it doesn't get the chance to "see" the Aldeburgh channels.
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