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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.

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.

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
Wednesday, 18 May 2011
N
Nick
sentiment_satisfiedGold

11:49 AM
Woodbridge

Thanks Brian. This permanent herringbone on ch 51 remains a mystery then.
You have opened another can of worms with your reply to Chris Jenkins saying amps can cause interference on digital. At my friend's house in Aldeburgh they use an amp for Sudbury and hope to continue to use it and Sudbury, rather than Aldeburgh with its few channels after switchover. Can you briefly outline any symptoms to look for if we get problems, so we can work out if they may be due to the amp? Many thanks.

link to this comment
Nick's 373 posts GB
Friday, 20 May 2011
Briantist
sentiment_very_satisfiedOwner

8:05 AM

Nick: Your herringbone problem may be caused by a reflected signal that just happens to be awful on C51 on a permanent basis.

The problem with amplification is that it does nothing to increase the quality of the digital multiplex reception.

This is because the amplifier will boost the interference in the signal as much, if not more, than the COFDM signal. This is because amplification does not change the signal-to-noise ratio.

You usually see this problem when you have 90%-100% signal strength showing on a set-top box, but the signal quality goes from 100% to 0% and you get sound dropouts and picture freezes.


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Briantist's 38,844 posts GB
N
Nick
sentiment_satisfiedGold

11:35 PM
Woodbridge

thanks Brian. If the signal quality does not drop, but then we get these problems, it just means signal is not good enough?
I am experimenting with a digibox on the few channels I can sometimes get, with booster. There are ghostly vertical lines about 3 ins apart moving fairly rapidly across the screen, left to right. Any ideas please? Sig strength almost nil.

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Nick's 373 posts GB
Saturday, 21 May 2011
N
Nick
sentiment_satisfiedGold

9:34 AM
Woodbridge

Dear Brian,
Whether before or after switchover, is there any reason why , if you can receive one channel within a certain mux group, you should not receive all channels in that same group? I have a feeling that when I can get anything at all, I am getting the odd channel from various groups, rather than all the available channels within whatever mux I am on at the time. Many thanks.

link to this comment
Nick's 373 posts GB
Monday, 23 May 2011
Briantist
sentiment_very_satisfiedOwner

8:33 AM

Nick: You will be able to receive a multiplex, or not - see How digital television works | ukfree.tv - independent free digital TV advice .

Sometimes older boxes had a few problems if a channel changed name, and you sometimes find that the "old name" channel will appear "blank" and the "new name" channel will be in the 800-899 range.

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Briantist's 38,844 posts GB
N
Nick
sentiment_satisfiedGold

11:25 AM
Woodbridge

Thanks Brian. Hope you also saw previous message about ghostly image on freeview.
We are getting most peculiar interference on channel 51 analogue at present. This time a constant ghostly rectangle, from top to bottom of screen, 6 inches wide, 3 inches in from the left hand side of the screen. We used to get something like that sometimes from French secam analogue. What it is to be on the east coast!

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Nick's 373 posts GB
N
Nick
sentiment_satisfiedGold

11:30 AM
Woodbridge

I notice one of the multiplexes transmits on channel 50+. I do not know what it means by '+', but am wondering if it could remotely be causing these problems. Presumably it means it is very close to 51?

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

1:26 PM

Nick: No, "+" means there is a positive ofset of 166Hz, thus 706.2MHz rather than 706MHz. You might also see "-" where there is a negative ofset of 166Hz. C51 is 714.0MHz as the channels are 8MHz wide.

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Briantist's 38,844 posts GB
Briantist
sentiment_very_satisfiedOwner

3:00 PM

Nick: You should never get "ghosting" on Freeview, it is impossible for it to occur. If you have anything like that you probably have a SCART loop (too many SCART cables) in your system.

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Briantist's 38,844 posts GB
N
Nick
sentiment_satisfiedGold

3:55 PM
Woodbridge

thanks Brian, but i only have the one scart, freeview to tv whilst testing. Very curious.
I have a group B high gain aerial. Would there be any benefit in substituting a wideband for out of group channels? I ask because wideband aerials must be poor at extreme ends of ch21 and 68, and what I have is already 'in the middle.' Thanks.

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Nick's 373 posts GB
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Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

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