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Full Freeview on the Sudbury (Suffolk, England) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps52.005,0.786 or 52°0'17"N 0°47'8"Esa_postcodeCO10 5NG


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 18/09/2023 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, 250 BBC Red Button, plus 15 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, 109 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! Movies Action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 69 HorrorXtra, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 91 WildEarth, 203 CITV, 208 Pop Player, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 16 others

 H max
C31- (553.8MHz)228mDTG-8100,000W
Channel icons
 Smithsonian Channel, 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, 60 Drama +1, 70 Quest +1, 71 That's 60s, 74 Yesterday +1, 75 That's 70s, 233 Sky News, plus 9 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! romance, 73 HobbyMaker, 76 That's 80s, 82 Talking Pictures TV, 83 Together TV, 84 PBS America, 90 Together TV +1, 235 Al Jazeera Eng, plus 19 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.

Monday, 20 August 2012
12:38 PM

Hi Jason. I listen to Radio 4 on FM and sometimes via my tv. If I walk between rooms it can be bit weird as the tv is about a second behind the FM radio. From what I've heard, the speed at which digital decoders works varies from product to product, so assume that expains the difference you experience. The 'pips' when received digitally are very slightly out of sync.

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Robert's 7 posts GB flag
Wednesday, 12 September 2012

6:01 PM

Please would someone give me an address or phone number of whoever I should contact re reception problems from Sudbury on Arq A only? I get all other muxes, and turning the aerial, various other transmitters, but Arq is usually not there at all, or pixelates.

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Nick's 387 posts GB flag
Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Monday, 17 September 2012
1:57 PM

Nick, Sudbury is not intended to cover Aldeburgh - that's why Aldeburgh has its own (Freeview Lite) transmitter on the outskirts of the town.

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Heinz's 9 posts GB flag
Wednesday, 19 September 2012

9:12 AM

Thank you, Heinz, but that does not explain a 90%+ signal quality on all muxes apart from the one using ch 60, which can sometimes be zero.

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Nick's 387 posts GB flag
Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Thursday, 20 September 2012
Tim CO14

6:11 AM
Walton On The Naze

Nick: Try using another tuner/digibox. If you then get Ch60 with a different tuner, that would suggest a fault with your current one.

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Tim CO14's 34 posts GB flag
Tim's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage

11:02 AM

I have, Tim, all the same. With the same aerial turned, I can get Clacton, Dover and Tacolneston. I am sure the transmitter is not all it should be.

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Nick's 387 posts GB flag
Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Wednesday, 10 October 2012
Rob Shepter
12:49 PM

Since Sudbury turned off analogue completely, and turned up the digital transmit powers, I cannot get any of the stations on c58 or c60. All the others c41/c44/c47/c56 are excellent, with usually 100% signal quality and 75% or better signal strength.
I have a new (this year) 25dB MHA with a 48-element aerial and satellite grade cabling (new this year) throughout.
I have tried three different receivers of two different brands (Philips, Echostar) with the same result.
Any ideas anyone?

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Rob Shepter's 2 posts GB flag
3:26 PM

You don't say where you are Rob but those symptoms are eerily similar to a receiver being swamped with too much signal (although why that should only happen on those 3 upper channels is beyond my simple mind).

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Heinz's 9 posts GB flag

8:47 PM

Rob Shepter: Should you be the person residing in the CO1 area and originally using a Philips DTR210 then, and as mentioned by Heinz, you "might" be receiving an excessively high signal level by being located about 10 miles or so from Sudbury, especially with the type of aerial set up you are using, which I must say does seem rather excessive at this sort of distance from a 100Kw transmitter.

The other point is, that although the terrain predictor does not indicate any obstructions in the signal path between the transmitter and you, this type of indicator cannot really be classed as being highly accurate by only showing ground levels and nothing else, so in real life is there any obstructions that you might be aware of?

Regarding the 75% strength indication that you have mentioned, what happens to this level if you switch off the mast head amplifier "whilst observing" this indication? although ideally I would have been more interested in what the indication would be if the amplifier had been by-passed, but if of a mast head type then that's obviously not possible.

And with reference to the mast head amplifier, if when its switched off you can still see a signal level being indicated, which with a strong signal you should do albeit that the picture may have vanished, then go into the tuning menu / manual tune and enter Ch58 or Ch60 and check if any level is being shown, no need to scan.

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jb38's 7,179 posts GB flag
Tuesday, 16 October 2012
8:25 PM
Saffron Walden

I live on the border of the Sandy/ Sudbury transmitters location CB10 2HB with the ariel pointing to Sudbury. I am now getting pixelation and signal loss apart from Ch58 on a new Panasonic TX-L42ET5B (which shows 100% signal strength but 10% signal quality on the problem channels), no channels apart from Ch58 on a Tvonics LT3 and no problems on the old Philips set top box or the Sony Bravia KDL-32S5500. Problems are intermittent mostly early evening and started happening about 2 weeks ago, everything AOK up to then. Any ideas?

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Tony's 8 posts GB flag
Tony's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
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