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 04/11/2024 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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Sunday, 14 January 2024
N
nick horrex7:18 PM
Chris SE
I see Oxford uses all Sudbury's channels, [but seemingly only C37 maybe affected.]
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C
Chris.SE8:16 PM
nick horrex:
The filter must go before any amplification otherwise it defeats the object.
You need to remember that your predicted reception of the COMs is already "variable". There's a multitude of possibilities as I've already indicated, as to why C37 is more vulnerable for you.
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N
nick horrex11:46 PM
Chris. SE
I have no amplification. I found it caused problems. So I can put the filter behind the set, as opposed to getting on the roof?!
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Monday, 15 January 2024
C
Chris.SE12:56 AM
nick horrex:
Yes, that should be fine. Good luck.
https://restoretv.uk/cont…-us/
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Wednesday, 17 January 2024
N
nick horrex11:46 PM
Chris SE
would a filter do anything to lessen the 'tropo' which in summer can knock out ALL channels?
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Thursday, 18 January 2024
C
Chris.SE1:21 AM
nick horrex:
No, a filter will be of no help there. Tropo can cause CCI and there's nothing you can do about that, but if there is other strong local interference present (eg. from a mobile mast !) that will just make matters worse as the wanted signals will have a poorer signal to noise ratio and become undecodable sooner.
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Sunday, 21 January 2024
N
nick horrex5:39 PM
Chris SE.
Not sure I follow this. What is the difference between distant signals knocking out Sudbury, [tropo], and Oxford doing it?
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Monday, 22 January 2024
C
Chris.SE1:06 AM
nick horrex:
Absolutely nothing. Maybe I should have made the BUT in my last post in capitals and the post clearer.
IF note the IF, there are no other issues - ie. no strong local interference of any description which could come from mobile masts, even faulty street lighting, a radio ham, CB operator etc etc. then -
CCI where ever it comes from is CCI nothing will stop that in itself until there's a change in the "weather" conditions.
IF you have other interference present then the signal to noise ratio will already be worse, so when the CCI occurs you will have problems at lower levels of CCI ie. it'll happen more easily.
You've already mentioned that fitting an amp made matters worse which also suggest there's interference present which an amp will make worse.
In this instance interference from a mobile cell seems the most likely issue, postcards have been sent to your postcode (even if you didn't get one - not an uncommon occurrence it seems).
So we need to eliminate this possibility and hope that it solves the problem.
I would also say that CCI from Oxford MIGHT occur more easily without the traditional "tropo" just plain temperature inversion which could occur more readily.
Stop trying to understand it if you still don't, just get the filter and fit it and let's see the results. If the problem is still there then it's thinking caps on again.
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nick horrex7:34 PM
Thanks Chris, as you say, get the filter.
I do though, have one tv and aerial with a low power amp. I don't want the hassle of taking it down. If I put the filter behind the set in this instance what happens?
When I said amps cause problems, I was speaking of 28db ones. Traditionally on analogue I used the highest power one I had. With digital I found the signal was fine one minute, but later on zero, and I was talking more of when we had ch 58 and 60.
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