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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 26/02/2024 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

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, 83 Together TV, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 30 others

 H max
C31- (553.8MHz)228mDTG-8100,000W
Channel icons
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 TV 2, 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
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! romance, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! romance mix, 71 That’s 60s, 73 HobbyMaker, 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

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.

Saturday, 13 August 2011
Elliot (hockley)
11:31 PM

Im still having problems with my freeview since the DSO I cant work out why i cant receive mux A as its transmitted at a stronger power when i can receive COM ArqA with very good signal around 90% and about 80% quality and its transmitted at a lower power I cant receive COM ArqB any more however every day at around midnight for about 1 hour i can receive mux A channels which i cant workout my aerial is a 91 element which worked great before the DSO however its not mounted right on the roof its no the side of an extension about 8 metres high could this be why I am having problems however I am thinking about twisting it round to crystal palace as i cant work it out, I was also thinking that the Rouncefall transmitter may be affecting my signal as I don't need my Arial plugged in to watch all the channels broadcasting from this transmitter my post code is SS5 4LG if you need any more info just ask

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Elliot (hockley)'s 6 posts GB flag
Elliot's: mapE's Freeview map terrainE's terrain plot wavesE's frequency data E's Freeview Detailed Coverage
Sunday, 14 August 2011

8:30 AM

Elliot (hockley): Well looking at DUK's trade predictor indicates that you should be getting a first class signal from the three main Mux channels from Sudbury, namely BBC1(Ch44) - ITV1(Ch41) HD service(Ch47)

The point is that your local transmitter at Rouncefall (1 mile away) transmits on the same channels as Sudbury, and there is a possibility that with the type of aerial you are using its overloading and desensitising your receivers input for any other lower powered stations, as only the three Mux channels mentioned are shown as being possible for reception anyway at your location, as there are no indications shown for the reception of Mux's A(Ch49)- Mux C(Ch54) - Mux D(Ch50).

It should also be noted that Mux A is only temporarily operating on Ch49 @ 14kw, and will be doing so until mid 2012.

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jb38's 22 posts GB flag

8:42 AM

Elliot (hockley) : You might have problems as long as Dover uses C58. The official predictions do not five you the commercial multiplexes until 27th June 2012.

You are predicted no signal at all from Crystal Palace.

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Briantist's 38,910 posts GB flag

8:44 AM

Elliot (hockley: Just another small point based on what was mentioned about signal strength, you should try reducing your signal slightly rather than increasing it, as if a powerful signal is desensitizing the tuners input this would help in this type of situation, the reduction done by incorporating a simple attenuator in line with the aerial socket, these generally obtainable from TV shops. (some of anyway!)

It should still be appreciated though that you are in what could be classed as an "iffy" area for reception, the signal strengths you have indicated somewhat proving this, and in these type of areas most things tried have an element of hit and miss about them, as nothing can be guaranteed.

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jb38's 22 posts GB flag

8:45 AM

Gary Dadds: Yes, you should be receiving the four HD channels on C47 from Sudbury.

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Briantist's 38,910 posts GB flag

9:28 AM

Elliot (hockley): Have you tried Bluebell Hill? There is a chance that you could receive MuxD and a lesser chance of MuxA, both are predicted as variable reception by the Digital UK postcode checker.

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KMJ,Derby's 1,811 posts GB flag
Gary Dadds
10:21 AM

Thank you for the replys

I tried a manual scan on channel 47 and received no results. As a check I did a manual scan on Ch44 and got 31 hits. I get 91 programs altogether with an auto scan, my tv finds 104 although it doesn't have an HD tuner so obviously doesn't list the HD channels.

I also tried a manual scan on Ch21 to see if I could pick anything up off the back of the aerial but with no results.

I must admit that I do have suspicions about the Freeview HD box. I think I need to either find someone local who is recieving HD and try my box there or take it to my parents who are getting HD off of Sandy.

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Gary Dadds's 4 posts GB flag

10:45 AM

Gary Dadds: Yes I think it best for you to try it as you have suggested at your parents house, and in that case its Mux Ch21 that will apply for Sandy's HD service.

I tried, but failed, to get more detailed technical spec info on your box, as I have to admit that I also was a bit suspicious of your box being the problem based on what you had originally said, albeit it is advertised as having an HD tuner.

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jb38's 22 posts GB flag
Elliot (hockley)
3:29 PM

thank you for your help looking at the aerials near my house most of them are pointing towards crystal palace accept for my neighbour who had a new one fitted and its pointing towards blue bell hill from what i can gather looking at the coordinates, would it be better to alter the position of my bigger 91 element aerial towards one of the London transmitters and put my newer 41 element in the position of sudbury?

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Elliot (hockley)'s 6 posts GB flag
Elliot's: mapE's Freeview map terrainE's terrain plot wavesE's frequency data E's Freeview Detailed Coverage

5:21 PM

Elliot (hockley): Well with regards to what you suggest, I really do think that before altering anything you should try and investigate exactly what your neighbours are receiving channel wise, and at what level of reliability, as just because they pointing at Crystal Palace it doesn't by any means mean that they are having good reception, as reception from Crystal Palace on DUK's trade predictor shows a mixture of variable and poor right into 2013. Bluebell Hill by the way showing far worse, with more "poor" reception, or none at all, being indicated right into 2013.

That said though, in situations such as yours even moving a few yards or so to the left or right can make big differences in reception, this likewise applying to aerial heights, as in many circumstances an aerial at gutter level can sometimes out perform an aerial perched on top of a pole mounted on a chimney, and so it shouldn't always be assumed that highest is best, a mistake made by many! but it does require time consuming experimentation to find the best spot.

Another point is, that even although you are about 30 miles or so from Sudbury I feel your reception problems might be caused more by signal obstructions rather than sheer distance, and large multi-element aerials with their "sharp pick up pattern" does not help in this type of situation, and indeed can actually make the situation worse in certain respects, so if its easy to arrange you "might" benefit slightly by using your newer aerial for Sudbury.

It could well be that where you are located pockets of good reception exist for "some" Mux's, so I wouldn't be surprised if some of your neighbours can receive what you cannot, but that's just the nature of RF signals insomuch that nothing can really be guaranteed in these type of areas.

Anyway, I would be interested in knowing the outcome of any investigations carried out on what exactly your neighbours are receiving, especially on the channels you have problems with.

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jb38's 7,179 posts GB flag
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