Full Freeview on the Sudbury (Suffolk, England) transmitter
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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.
This transmitter has no current reported problems
The BBC and Digital UK report there are no faults or engineering work on the Sudbury (Suffolk, England) transmitter._______
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 not one of the extended Freeview HD (COM7 and COM8) transmitters, it does not provide these high definition (HD) channels: .
If you want to watch these HD channels, either use Freesat HD, or move your TV aerial must point to one of the 30 Full Freeview HD transmitters. For more information see the want to know which transmitters will carry extra Freeview HD? 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)
Are you trying to watch these 0 Freeview HD channels?
The Sudbury (Suffolk, England) mast is not one of the extended Freeview HD (COM7 and COM8) transmitters, it does not provide these high definition (HD) channels: .
If you want to watch these HD channels, either use Freesat HD, or move your TV aerial must point to one of the 30 Full Freeview HD transmitters. For more information see the want to know which transmitters will carry extra Freeview HD? 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, 18 June 2011
Heinz
5:09 PM
Spalding
5:09 PM
Spalding
Sorry, that last paragraph shoul've read:
From 16/11/11, Arquiva B will move to UHF 63 and then operate at only 2.2kW until 27/6/2012 (when it changes to UHF 56).
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Dale
8:27 PM
Ipswich
8:27 PM
Ipswich
Heinz : the information at the top of this page DOES mention the lower power of ArqA, ArqB and SDN. I quote :
NOTE: ArqA starts up at DSO 2 (20 July) at 3kW, replacing Mux C on C54 at 1.5kW, 'until further notice'. ArqB starts up at DSO 2 at 2.2kW replacing Mux D on C50 at 1.1kW, moves to C63 (at 2.2kW) on 16 November. NOTE: SDN will temporarily operate on channel 49 (at 14kW ERP) from the first stage of Sudbury's switchover until mid-2012. Arqiva A will remain on its preswitchover channel (54) from switchover until mid-2012. Arqiva B will remain on its pre-switchover channel (50+) until late 2011, and then temporarily move to channel 63 (at 2.2kW ERP), before adopting its final allocation of channel 56 during mid-2012
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Sunday, 19 June 2011
W
W Butcher1:19 PM
Colchester
Re. my post of March 29th about Freeview signal in the Tiptree area from Sudbury.I have installed a Labgear 450 wideband aerial for my inlaws and now they get all channels fine,seems like a decent bit of kit.
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Heinz
5:07 PM
Spalding
5:07 PM
Spalding
Yes, Dale, I fully appreciate the 3kW information is on here and experience suggests it's likely to be accurate.
However, the 25/5/11 Ofcom Issue 3.0 PDF make no mention (AFAICS) of that 3kW restriction.
I may have missed it but I did a word search for '3kW' and found nothing (whereas a search for '2.2kW' did find that in relation to the temporary use of UHF 63 later this year).
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Monday, 20 June 2011
Heinz
10:20 AM
Colchester
10:20 AM
Colchester
I've just tried a Google search for "Sudbury 2kW" too - and the only results are to text on this site (i.e. there's nothing on official sites).
Bearing in mind that this is a private site run solely by Brian and that he's on holiday for 2 weeks now, it's not possible to ask him where he got the information from.
DSO1 @ Sudbury will be imminent anyway by the time her gets back but I'm sure he'll pick up on this.
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M
Mike Dimmick11:55 AM
Heinz, Dale: We're trying to keep up with what's going on, but the only official documentation comes from Ofcom and they seem to be following what the broadcasters do, not leading.
There is more information - from which a lot of that commentary came - in the "Digital Terrestrial Broadcasting Stations for Multiplex Licences" documents at Ofcom | Supplementary licence documents in relation to DSO . These now form part of the licences to broadcast. However, the notes are truncated badly for version 2 and fairly badly for version 3 on Mux A/SDN.
The version 3 document confirms Mux C/Arqiva A on C54 at 3kW and Mux D/Arqiva B on C50 at 2.2kW from DSO 2. Digital UK's postcode checker (which is run by the broadcasters) confirms this, but indicates that both will change mode to 64QAM 2/3 from the current 16QAM 3/4. The new mode requires about 4 dB more signal-to-noise ratio than the old mode. A doubling of power is 3 dB, so there will be a small reduction in the covered area, but not as much as if the power levels were left unchanged.
At other sites Arqiva have swapped their multiplexes A and B around, so that Arqiva B (which carries Sky Sports) gets the better channel/the one which can get a power increase earlier. Before switchover Sky Sports 1 and 2 are carried by the BBC on their second multiplex; if ArqB doesn't go to 64QAM 2/3 at DSO 2, these channels have no home because BBC B is changed to DVB-T2 256QAM 2/3 for HD channels.
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M
Mike Dimmick1:00 PM
Heinz: Digital UK's predictor shows that you are well within the covered area, a prediction of 99-100% across the board, and I would say that any problems that occur at switchover are likely to be down to too much signal. This is particularly the case at Sudbury, where the peak power reduction from analogue to digital is only 4 dB, whereas at most sites it is 7 dB.
The average digital power is actually higher than analogue, because the peak-to-average ratio is much smaller for digital than for analogue. The analogue transmissions could also be, and are/were, synchronized so that the channels were not all transmitting at peak power at the same time, whereas digital transmissions cannot be synchronized in this way. You can get an idea of how digital signals combine from BBC White Paper 156, DVB-T and Voltage Ratings of Transmission Equipment at BBC RD - Publications - White Paper 156 DVB-T and Voltage Ratings of Transmission Equipment , and how that differs from analogue in White Paper 126, titled 'Co-axial Cables' at BBC RD - Publications - White Paper 126 : Co-axial cables (see section 10 on p17).
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Wednesday, 22 June 2011
SUDBURY transmitter - Freeview BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 09:18 today to 09:31 today BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 09:00 today to 09:06 today [BBC]
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SUDBURY transmitter - Freeview BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 09:18 today to 09:31 today BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 09:00 today to 09:06 today [BBC]
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SUDBURY transmitter - Freeview BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 09:00 today to 09:06 today BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 09:18 today to 09:31 today [BBC]
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