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 29/04/2024 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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Monday, 22 January 2024
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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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Chris.SE10:09 PM
nick horrex:
Any mobile interference may not be suppressed adequately.
Is this "low power amp" external on the mast? If so I suggest you ask Restore TV for the external waterproof one. They should offer to come and fit it (free of charge).
Or of course you could tell them you can do the job yourself, try the external filter internally to see if it helps.
Ultimately, take the aerial down and fit it externally - you might want to try another aerial as you like experimenting, if you do so - a Group K, maybe the highest gain (56 element) Blake Log periodic I believe we mentioned many posts back.
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Tuesday, 23 January 2024
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nick horrex7:26 AM
Chris SE,
Yes, on the mast. These people really come out free and fit filters? Does one not have to arue with them that we need one in the first place?
I have a log periodic in my shed, about 4ft long. It is pretty good but yet another which struggles with C 37. My current favourite is home made and I kept testing it at every alteration.
What do you call 56 element? Not each little piece of metal I hope!
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Chris.SE2:46 PM
nick horrex:
Yes, they will come and fit external ones for free (sometimes a new aerial), that is their job, they are paid by the mobile operators, that was a condition of the 700MHz licences that mobile operators bought, to fix any interference issues..
Visit their website and read!
Blake 56 element log-periodic, yes every rod!
https://www.blake-uk.com/56-element-log-periodic-group-k-aerial-new-double-element-design.html
As I've said previously, your postcode has been sent postcards, so there should be no argument UNLESS you are daft enough to make out the issue isn't that great and only affects that one channel C37.
You need just to egg it a bit, start by saying you didn't used to have a problem that you really noticed a year or so ago, except when weather conditions gave tropospheric ducting but now problems are more frequent on the COM multiplexes with some Quality figures going up and down like a yo-yo, and sometimes but less frequently an issue with the HD PSB multiplex. You didn't really know why this was happening, did all you could to check your own aerial system. Recently you were advised that it looked like interference from a mobile mast!
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Friday, 26 January 2024
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nick horrex11:52 PM
Chris SE,
thanks. What if they say I am the only one in the area who has the problem and that my aerial looks home made?
That log is interesting. the picture is confusing. It describes itself as double, but does not say double what. I note it is fairly new as it goes up only to C48, It looks much like mine
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Saturday, 27 January 2024
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Chris.SE12:52 AM
nick horrex:
The fact that you might be the only one in the area is irrelevant, others may have cable, satellite or an aerial that might be "screened" a bit from the mobile mast by obstructions etc.
I've so far not come across a single person that's had an issue like that.
If your standard aerial is mounted on a pole in the garden, amd from what I recall from some of your earlier posts makes it readily accessible I would suggest you tell them you have a masthead amp but can fit a weatherproof filter yourself if they could please send one. I think that would be a sensible option for all concerned.
Strikes me that you are still prevaricating a bit. Just get on with it.
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nick horrex7:26 PM
Chris SE,
Good man, thanks.
I wonder if your wisdom extends to lithium batteries. I cannot find the answer online.
The individual cells of, say, an electric drill, can, if taken apart, be charged individually if you so choose. The lithium batteries in some fire alarms, 3v look similar but half the length. These say 'do not recharge' and for that matter we can now also get 1.5v AA batteries which again say not to recharge. Why can some lithium batteries be recharged and some not?
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Monday, 29 January 2024
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Chris.SE4:16 AM
nick horrex:
I meant to comment on the log-periodic in my last post, if you compare it to the 28 element you'll see.
https://www.blake-uk.com/28-element-log-periodic-group-k-aerial.html
Just a brief comment, there are so many different type of Lithium battery technology. To name two common ones, Lithium Polymer (LiPo) - the type you will most likely find in your smart phone, Lithium Iron Phosphate (LiFePO4) - you will find 12V replacement car batteries of this type, Typical cell voltage for both those is 3.6v, so for a car battery there are 4 cells (cf. lead acid car batteries have 6 cells).
Lithium Coin cell batteries (generally referred to as Li-ion), maybe in your watch, backup battery in many devices are 3v - these are not rechargeable according to most, but I've seen some claim they are!
Rechargeable types need treating with respect, overcharging can cause a fire, as can over discharging!!
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Transmitter engineering
5:11 AM
5:11 AM
Sudbury transmitter - Sudbury transmitter: Possible effect on TV reception week commencing 29/01/2024 Pixelation or flickering on some or all channels [DUK]
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Sunday, 4 February 2024
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nick horrex7:06 PM
Chris SE
thanks. I am speaking of aa batteries, 1.5 volts, alternative to alkaline, and 3volt , about half inch + wide and inch long, found in some fire alarms. Both these voltages seem unusual for lithium which is normally 3.7v and both say not to recharge. I don't understand why.
Re log. the 52 element design is the same length as mine with, I believe 13 WHOLE elements. The picture though is not clear. The elements seem to be in pairs, closely spaced, so that you get two close then the next one is further, then back to close etc. The overall aerial to me seems to contravene sensible design, ie the elements are far too many and far too close. I need to find a good picture of it.
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