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 22/04/2024 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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Saturday, 16 March 2013
J
jb386:32 PM
Nick: Basically yes! this based entirely on what you have reported with regards to the signal being strong etc.
But as far as the PSB channels being lost are concerned, if the action of selecting BBC1 results in a blank screen then the "only" way of determining the cause is by following (exactly) the manual tune test procedure as described in my reply on the 12th @ 07.53PM.
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J
jb387:31 PM
Nick: Re: your 05.10PM posting concerning signal strength reductions etc, I would strongly recommend that you keep the test as simple as possible by "only" using an attenuator in line with the aerial socket as was described, because if you attempt to reduce the signal by changing the voltage being fed to the home made booster then you are effectively bringing something else into the equation thus making it difficult to evaluate the results as its effectively dealing with the unknown as far as signal attenuation is concerned.
Another problem that could be introduced by this action being, that there is always the possibility of the signal passing through the amplifier becoming corrupted due to the RF transistor being used for amplification becoming unstable because of insufficient voltage on its collector compared to that of the high level of RF on its base.
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N
Nick10:47 PM
Thank you, JB, I will do your tests.
Did you have any conclusions re the sound buzz with small tvs/ brightness etc?
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Sunday, 17 March 2013
J
jb388:32 AM
Nick: Sorry, meant to add this to my reply.
However, put simply as it can involve a lengthy explanation, but what you refer to is actually something that was quite frequently heard in a large number of older CRT sets of the somewhat less costly types when the contrast was set on the high side, and with the problem basically being caused by poor design of the power supply allowing the effects of the "maximum current drawing" white level pulses of the video signal to be introduced into the audio circuitry by insufficient levels of filtering, this being why you hear the buzz level changing with the content of the picture.
This type of problem was not really noticed quite so much when the TV was being used for analogue reception via an aerial as the sets auto-gain circuitry kept this level under an element of control, but when a video signal is being fed into the set via the scart socket this control is bypassed thereby placing the circuitry at the mercy of the incoming signal level, and because a Freeview boxes video output is not adjustable in the same way as can be done with a Sky box (three choices of contrast) the only way of compensating for this is on the TV is by reducing the contrast level of the picture, unfortunately on some sets this resulting in the picture having a slight wishy-washy appearance.
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N
Nick7:57 PM
Thanks JB,
seems not to affect bigger sets, and even Sony trinitron portables buzz via scart.
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J
jb388:58 PM
Nick: Possibly not, but as I previously mentioned it is something that is not exactly uncommon if the intensity of the buzz varies with the content of the signal but somewhat subsides if the TV's contrast is reduced, because if it doesnt then the problem can be caused by defective earth continuity between both devices (try another scart lead) or possibly a dry joint on the ground connection from the rear of the boxes scart socket to PCB (or even on the PCB) as in that case the buzz heard "is" the video signal and not a representation of it as applies in the case of a poorly designed power supply.
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N
Nick10:48 PM
thanks JB,
This problem seems common to several small tvs, scart leads and boxes I have tried, and avoidable only with boxes which will feed via aerial, including my Digital Vision AD-BEAV....which brings me to yet another problem. That box is useful as it can connect via the aerial. However, the speech is often slurred and slow, as if drunk, or a 45 rpm record playing at 33. It is remedied by switching it off at the mains once or twice. Any ideas please?
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Friday, 22 March 2013
A
Alexa9:40 PM
Aldeburgh
at 11pm EVERY night my signal is lost until the next day. no amount of re-tuning works.can anyone offer an explanation?
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Alexa's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
N
Nick11:54 PM
Alexa, whereabouts, roughly, in A? Are you on the Aldeburgh tx, limited channels, or Sudbury?
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Saturday, 23 March 2013
J
jb3812:01 AM
Alexa: Does the aerial system being used belong to you or are you on some form of communal system? although should it be yours then if you have any form of booster installed then it has possibly been accidentally connected into a mains supply thats used a timed circuit such as communal lighting or cheap off peak electricity.
Have you made any enquiries with your neighbours to determine as to whether or not the problem is solely confined to yourself? or that others are being similarly affected?
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