menuMENU    UK Free TV logo Freeview



Click to see updates

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 22/04/2024 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.

Wednesday, 25 April 2012

8:38 PM

Nick: I would not let yourself be over influenced by looking at the gain figures claimed for aerials such as the type you have mentioned, as these figures are gathered from when the aerial is tested under strictest of conditions and in the most ideal of conditions, something which bears no resemblance to where most of them are used in the real world, as in practice and especially where difficult non line-of-site situations are involved, the general rule is the larger the aerial the sharper its acceptance angle is, the last thing thats wanted where elements of signal path warping is liable to occur, an aerial with a wider acceptance angle always performing better in these situations, and aided if necessary with an amplifier.

link to this comment
jb38's 7,179 posts GB flag

8:47 PM

Nick: Sorry, and although this may sound a bit odd, but although being a long standing engineer I dont really get involved with DAB radio or its reception, and as such am unable to advise on issues concerning it.

link to this comment
jb38's 7,179 posts GB flag
Dave Lindsay

9:29 PM

jb38: It's interesting the point you make about using an aerial with wider acceptance in combination with an amplifier where there is difficult non-line-of-sight. I've always wondered why you wouldn't just go with a higher gain aerial so as not to have to resort to amplification. This makes sense; thanks for the insight.

link to this comment
Dave Lindsay's 5,724 posts GB flag

10:44 PM

Thank you gentlemen. The issue of aerials is quite confusing. If you go to ATV aerials site, they say the opposite, that a low gain aerial with wide acceptance angle plus booster is a poor substitute for a high gain aerial. But they do like log periodic, in areas of good signal strength. It also seems to be that boosters can do more harm than good on digital.

link to this comment
Nick's 431 posts GB flag
Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Dave Lindsay

11:00 PM

Nick: I do not believe that jb38 has implied that a lower gain aerial plus booster is a "substitute" for a high gain aerial. He has said that a lower gain aerial plus booster can be better in difficult non-light-of-sight situations.

That does not mean that high gain antennas don't have their uses. What ATV is probably saying is that a low gain antenna plus booster is NOT the equivalent of a high gain antenna without booster.

link to this comment
Dave Lindsay's 5,724 posts GB flag

11:50 PM

Nick: Thanks Dave. What part does non line of sight play though?

link to this comment
Nick's 431 posts GB flag
Thursday, 26 April 2012
Dave Lindsay

12:51 AM

Nick: Quite a lot.

Think of car headlights a night when they are coming towards you over the brow of a hill. Before they get over the brow, you do not have direct line of sight. You can see the growing mass of light above the horizon (which is the highest point).

Now imagine that the light is a signal you are trying to receive.

I believe that what jb38 is saying, is that it is best to use a low gain/wide acceptance aerial to collect this "mass of light" rather than a high gain/narrow acceptance one.

Read ATV's page on amplifiers:

Television Aerial Boosters / Amplifiers, Splitters, Diplexers & Triplexers

Amplification is fine so long as you are amplifying a small good quality signal. If you amplify a small poor quality signal then you will end up with a large poor quality signal.

Because a high gain aerial has a narrow range of acceptance, it is imperative for the signal to be "good" quality along that narrow path where it is most sensitive. If it's not, then all you'll have is a poor quality signal.

The suggestion that a low gain antenna is better means that the signal that it is "collecting" is over a wider surface area of the aerial. Therefore, if "some" of that is "poor" but most is "good", the "good" will win through and therefore the signal carried down the aerial lead will be "good".

Or to think of it another way, consider the high gain antenna with small acceptance angle. Let's suppose that "most" of that angle is filled with a signal that is "poor". The signal carried down the lead will therefore be "poor". Now imagine replacing the high gain aerial with a low gain one that has a wider acceptance angle. Because the "poor" bit is spread over much smaller proportion of the acceptance angle, it therefore follows that the signal from the aerial is better (albeit perhaps of smaller magnitude).

jb38, am I on the right lines?

link to this comment
Dave Lindsay's 5,724 posts GB flag

7:48 AM

Thank you Dave for your trouble in giving such a full answer.
Now let me throw another thing into the pot. I have recently been posting questions on the Tac site as I believe the mast height has been increased and coverage extended since going digital. I was advised that Sud is still my better option as at 10m it is technically line of site. So in theory the answer would be to get a good set of binoculars and see if it is!

link to this comment
Nick's 431 posts GB flag
John Chambers
4:46 PM

Why has there no official information about channels I had prior to November 2011 not coming back until 27 June?

I only found out by speaking to a gentlemen from Freeview and had it confirmed via this website.

link to this comment
John Chambers's 4 posts GB flag
John's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
Dave Lindsay

5:54 PM

Nick: As far as the question of Sudbury or Tacolneston goes, assuming no local obstructions, the former would appear to be the much better bet.

I refer you back to my earlier posting to you on this:

Freeview on Tacolneston TV transmitter | - independent free digital TV advice

Click the "Terrain between..." links for plots.

link to this comment
Dave Lindsay's 5,724 posts GB flag
Select more comments

Your comment please
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.

If you have no satellite signal, see Sky Digibox says 'No Signal' or 'Technical fault'

If you have other problems, please provide a full (not partial) postcode (or preferably enter it in box at the top right) and indicate where if aerial is on the roof, in the loft or elsewhere.

UK Free TV is here to help people. If you are rude or disrespectful all of your posts will be deleted and you will be banned.

Privacy policy: UK Free Privacy policy.