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Full Freeview on the Sudbury (Suffolk, England) transmitter

first published this on - UK Free TV
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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.

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 26/09/2022 Pixelation or flickering on some or all channels Digital tick


Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name
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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.

MuxH/VFrequencyHeightModeWatts
PSB1
BBCA
 H max
C44 (658.0MHz)229mDTG-3100,000W
Channel icons
1 BBC One (SD) East, 2 BBC Two England, 9 BBC Four, 23 BBC Three, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 250 BBC Red Button, plus 15 others

PSB2
D3+4
 H max
C41 (634.0MHz)229mDTG-3100,000W
Channel icons
3 ITV (SD) (Anglia (East micro region)), 4 Channel 4 (SD) South ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 South ads, 18 More4, 26 ITV4, 30 E4 +1, 35 ITV +1 (Anglia east),

PSB3
BBCB
 H max
C47 (682.0MHz)229mDTG-6100,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV HD (ITV Meridian Southampton), 104 Channel 4 HD South ads, 105 Channel 5 HD, 106 BBC Four HD, 109 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

COM4
SDN
 H max
C29 (538.0MHz)186mDTG-3100,000W
Channel icons
12 Quest, 20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 41 Legend, 42 GREAT! movies action, 46 Channel 5 +1, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 74 Dave ja vu, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 203 CITV, 208 POP MAX, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 15 others

COM5
ArqA
 H max
C31- (553.8MHz)228mDTG-8100,000W
Channel icons
11 Sky Arts, 17 Really, 19 Dave, 31 E4 Extra, 36 pick, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 57 Smithsonian Channel, 60 Drama +1, 70 Quest +1, 75 Yesterday +1, 83 Together TV, 233 Sky News, plus 8 others

COM6
ArqB
 H max
C37 (602.0MHz)228mDTG-8100,000W
Channel icons
 FreeSports, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 88 Classic Hits, 235 Aljazeera English, plus 19 others

DTG-3 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
DTG-8 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?

regional news image
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
regional news image
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 WestTransposer1000 homes +1000 or more homes due to expansion of affected area?
WithamTransposer14 km NE Chelmsford.118 homes

How will the Sudbury (Suffolk, England) transmission frequencies change over time?

1984-971997-981998-20112011-131 Aug 2018
B E TB E TB E TE TK T
C29SDN
C31ArqA
C35C5wavesC5waves
C37ArqB
C41ITVwavesITVwavesITVwavesD3+4D3+4
C44BBC2wavesBBC2wavesBBC2wavesBBCABBCA
C47C4wavesC4wavesC4wavesBBCBBBCB
C51tv_offBBC1wavesBBC1wavesBBC1waves
C56tv_offArqB
C58tv_offSDN
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

Oct 1959-Feb 2004Anglia Television
Feb 2004-Dec 2014ITV plc
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV Daybreak•
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Sudbury was not an original Channel 3 VHF 405-line mast: the historical information shown is the details of the company responsible for the transmitter when it began transmitting Channel 3.

Comments
Friday, 29 April 2011
N
Nick
sentiment_satisfiedGold

11:13 PM
Woodbridge

Thanks again Brian, very concise.
The point I have yet to grasp re Aldeburgh is why you said the digital will start well but LATER get worse. Do you mean the foreign xmitters will change frequencies some months after Aldeburgh goes digital and then start to cause us problems? Thanks.

link to this comment
Nick's 373 posts GB
Wednesday, 4 May 2011
Briantist
sentiment_very_satisfiedOwner

8:16 AM

Nick: Yes, that's correct.

link to this comment
Briantist's 38,844 posts GB
N
Nick
sentiment_satisfiedGold

3:53 PM
Woodbridge

Thank you Brian. I can foresee many angry viewers. Don't see why we let them get away with it. As a generalisation, will a viewer in Aldeburgh itself, relatively high ground, continue to get a good signal after this degeneration? If not, I fail to see why Aldeburgh should stay on air.
I would also appreciate general info re getting a few freesat channels on Sky. Yesterday and a history channel are not free on Sky, but I can tune my box manually to get them, I believe, if I knew the various data to put in. How do I find out this data?
In the past I have manually tuned to foreign sats with extra dish, but after a few days the box 'forgets' and I have to re-enter. Why?
Thanks.

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Nick's 373 posts GB
Briantist
sentiment_very_satisfiedOwner

7:45 PM

Nick: There won't be "many angry viewers" as the problem only effects locations where Bluebell Hill is directly behind, everywhere else in the Aldeburgh coverage area won't have such a problem because the aerial will not pick up the Bluebell Hill signals.

No, you can't "tune into" pay channels, they are protected by the SSSL encryption system.

link to this comment
Briantist's 38,844 posts GB
Thursday, 5 May 2011
N
Nick
sentiment_satisfiedGold

8:23 AM
Woodbridge

You are saying Bluebell Hill will interfere with the newly digital Aldeburgh at some point for viewers effectively north of the Aldeburgh xmitter? I am confused again, sorry, as I thought you just agreed that it would be foreign xmitters changing frequency which would cause its signal interference.

link to this comment
Nick's 373 posts GB
Briantist
sentiment_very_satisfiedOwner

8:28 AM

Nick: No. I am saying that some people on the edge of Aldeburgh coverage area who are also in a direct line (south south east) between Aldeburgh and Bluebell Hill - that's you - will have the problem.

The point about "foreign transmitters" was a general point about why some prediction points have a falling off of levels after switchover.

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Briantist's 38,844 posts GB
N
Nick
sentiment_satisfiedGold

8:30 AM
Woodbridge

Re Sky.
There are some channels such as 'Yesterday' which Sky expects us to pay for which are free on freesat. The Sky box can be manually tuned to see freesat channels. How do I find the relevant data I must input, eg frequency,to see Yesterday on freesat via my Sky box? Why when I set up my Sky box to hold such channels does it only do so for a few days and then 'forget', so I have to put the info in again? Pace box.

link to this comment
Nick's 373 posts GB
Briantist
sentiment_very_satisfiedOwner

8:32 AM

Nick: No, the channels are encrypted. Do you not think people would have found that out?

link to this comment
Briantist's 38,844 posts GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

4:04 PM

Nick: Brian's claim about 'directly in line' is wrong. He persists in reporting, incorrectly, that aerials receive as much signal from behind as they do in front. In fact the level received from behind is significantly less than that from in front - although it is not zero, so a very powerful or close transmission from behind can still be picked up by the box.

Also, aerials have cross-polar rejection. Transmissions are polarized, with the electrons vibrating side-to-side (horizontal polarization) or up-and-down (vertical). For best results the aerial has to be oriented the same way as the transmission. Again, they pick up far less signal from the opposite polarization. Aldeburgh transmits on vertical polarization while Sudbury and Bluebell Hill use horizontal polarization.

It's not clear how cross-polar rejection and the front/back ratio interact. Digital UK's prediction model only allows a maximum of 16 dB of rejection from both sources, the same as the maximum from either source. (Most aerials perform better than this.)

I think Digital UK's predictor has all sources of foreign interference down as occurring in 2013, rather than actually following the foreign switchover dates. In practice many of the foreign interferers have already switched over.

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Mike Dimmick's 2,486 posts GB
Friday, 6 May 2011
N
Nick
sentiment_satisfiedGold

12:28 AM
Woodbridge

Thanks Brian and Mike.
Brian, I think we still are at cross purposes over Sky. I realize Sky encripts, for example, 'Yesterday.' Freesat does not. You can receive Freesat channels on the Sky box if you know the various data you can input manually into the Sky box, a different set of data for each freesat channel you want to see, just as you can put a different dish on Sky and manually tune into channels from ,for example, Hispasat. I was asking where I can find the data for freesat 'Yesterday', frequencies etc, so I can see the freesat version on my Sky box. I also wanted to know why Sky 'forgets' these extra channels after a few days.

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Nick's 373 posts GB
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