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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 04/12/2023 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

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.

 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

 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),

 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

 H max
C29 (538.0MHz)186mDTG-100,000W
Channel icons
20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 35 others

 H max
C31- (553.8MHz)228mDTG-8100,000W
Channel icons
 Smithsonian Channel, 11 Sky Mix, 17 Really, 19 Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 Drama +1, 65 That's Christmas, 70 Quest +1, 74 Yesterday +1, 75 That's 90s, 233 Sky News, plus 11 others

 H max
C37 (602.0MHz)228mDTG-8100,000W
Channel icons
 Quest Red +1,  Classic Hits, 12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! christmas, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! christmas mix, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 83 Together TV, 84 PBS America, 235 Al Jazeera Eng, plus 20 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

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.

Friday, 7 January 2022

3:04 PM

Hi Chris. Many thanks for the latest reply.
I will endeavour to "have a go" but can't promise when I will get time to "nip in and out" of the loft as my spare time is very limited at the mo and to make matters worse I have no loft ladder or Arctic-wear!!
Am very appreciative of your continued help!!
Will try to update in the very near future.

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Aytch's 23 posts GB flag
Saturday, 8 January 2022
Richard Owen

1:42 PM

Many thanks StevensOnln 1
I know the Mobile companies bought the spectrum , but I was hopeful of a Freeview expansion once 1 and 2G are switched off . What will be the guide number for SD BBC 3 , if you happen to know ?

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Richard Owen's 42 posts GB flag

2:35 PM

Richard Owen: The 1st generation analogue mobile networks run by Cellnet (now O2) and Vodafone were closed down around 20 years ago and the frequencies were reused to expand capacity the 2G GSM digital networks. Those frequencies in the 900MHz range have never been used for broadcasting and are outside of the range that UHF TV aerials are designed to receive.

BBC Three's channel number hasn't been announced yet but according to Ofcom rules it has to be within the first 24 positions on Freeview (LCN 24 is currently used for BBC Four in Scotland and there are no lower unused numbers so there will have to be a reshuffle to accommodate BBC Three).

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StevensOnln1's 3,568 posts GB flag

3:12 PM


No problem, I didn't expect you to rush, in your own time. Yes, I noted the need for Arctic-wear when putting some Xmas decorations away :)

link to this comment
Chris.SE's 3,929 posts GB flag
Saturday, 15 January 2022
3:22 PM

Is there an upgrade program to enable this transmitter for Com7/8 do you know?

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RBZ5416's 1 post GB flag

3:48 PM


COMs 7/8 were always only ever temporary HD multiplexes and COM7 is now only currently broadcast from 25 main transmitters. COM8 closed in June 2020 primarily for commercial reasons influenced by the pandemic, and COM7 is scheduled to close at the end of June 2022 under the terms of the current OFCOM licence.
There's been no announcements about what will happen to any of the channels on COM7. There's lots of speculation but no facts!

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Chris.SE's 3,929 posts GB flag
Tuesday, 3 May 2022
Denis Wicking
5:51 PM

C37 com6 seems to have disappeared in the last week

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Denis Wicking's 2 posts GB flag

6:51 PM

Denis Wicking:

Sudbury is on Planned Engineering with "Pixelation or flickering on some or all channels".
If you are far enough away from the transmitter that might result in no signal.
If you happened to retune when you had bad pixellation or no signal, it will most likely have just cleared the correct tuning.

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Chris.SE's 3,929 posts GB flag
Wednesday, 4 May 2022
Denis Wicking
7:39 AM

Chris.SE: Thanks for the update - I haven't retuned - just zero signal/zero strength on C37. I'll wait a week for restored service - at least it is only C37

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Denis Wicking's 2 posts GB flag

2:54 PM

Denis Wicking:

Have you tried a manual retune just on C37? Sometimes auto-retunes will miss weaker signals.
Whilst it is possible, it would be unusual for a single mux to be on low power/or off-air for any lengthy period. Also check all your coax connections, sometimes a bad connection can seriously affect just one mux due to standing waves resulting from the bad connection.

It could be that you are unfortunate to be in one of those locations where a given mux has poorer reception due to the terrain and possible interference from other transmitters.
If you give a full postcode we could look at your predicted reception.

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Chris.SE's 3,929 posts GB flag
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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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