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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 04/11/2024 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-100,000W
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, plus 16 others

PSB2
D3+4
 H max
C41 (634.0MHz)229mDTG-100,000W
Channel icons
3 ITV 1 (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, 28 ITVBe, 30 E4 +1, 35 ITV1 +1 (Anglia east), 71 That’s 60s,

PSB3
BBCB
 H max
C47 (682.0MHz)229mDTG-100,000W
Channel icons
46 5SELECT, 101 BBC One HD East, 102 BBC Two HD England, 103 ITV 1 HD (ITV Meridian Southampton), 104 Channel 4 HD South ads, 105 Channel 5 HD, 106 BBC Four HD, 107 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

COM4
SDN
 H max
C29 (538.0MHz)186mDTG-100,000W
Channel icons
20 U&Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 U&Dave ja vu, 58 ITV3 +1, 59 ITV4 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 81 Blaze +1, 83 Together TV, 91 WildEarth, 93 ITVBe +1, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 251 Al Jazeera English, 255 FRANCE 24 (in English), 265 Rok Sky +1, plus 29 others

COM5
ArqA
 H max
C31- (553.8MHz)228mDTG-8100,000W
Channel icons
11 Sky Mix, 17 Really, 19 U&Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 U&Drama +1, 65 That's TV 2, 70 Quest +1, 74 &UYesterday +1, 76 That's TV 2 MCR, 233 Sky News, plus 13 others

COM6
ArqB
 H max
C37 (602.0MHz)228mDTG-8100,000W
Channel icons
12 Quest, 25 U&W, 27 U&Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! christmas, 56 That's TV (UK), 63 GREAT! romance mix, 73 HobbyMaker, 75 That's 90s, 82 Talking Pictures TV, 84 PBS America, 235 Al Jazeera Eng, plus 18 others

DTG-8 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?

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, 20 May 2011
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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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.

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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 38,915 posts GB flag
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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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?

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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 38,915 posts GB flag
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 38,915 posts GB flag
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 431 posts GB flag
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Briantist
sentiment_very_satisfiedOwner

10:08 PM

Nick: A group B is unsuitable for digital reception before or after switchover from Sudbury, no matter what the "gain". See "Transmission frequencies" above.

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Briantist's 38,915 posts GB flag
Tuesday, 24 May 2011
N
Nick
sentiment_satisfiedGold

9:25 AM
Woodbridge

Dear Brian,
Group b covers ch 35-53, ie all the analogue channels used by Sudbury. I do not understand how a wideband areial would improve things as it must surely be a compromise to try to include channels as far apart as 21 and 69. I have seen graphs of the performance of wideband aerials which show a tailing off of gain at either end. Surely that is exactly what my group b aerial does too?.
I am still playing with the digibox which I have set to install. When the wind is in the right direction, I get channels from ALL the mux shown for Sudbury, but not all the channels within every mux. This really puzzles me. Notable absentees are ITV 1, c4 and C5. Whoever decided we should have QVC and Babestation instead!

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