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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.

This transmitter has no current reported problems

The BBC and Digital UK report there are no faults or engineering work on the Sudbury (Suffolk, England) transmitter.

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, 250 BBC Red Button, plus 15 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, 30 E4 +1, 35 ITV1 +1 (Anglia east),

PSB3
BBCB
 H max
C47 (682.0MHz)229mDTG-100,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 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

COM4
SDN
 H max
C29 (538.0MHz)186mDTG-100,000W
Channel icons
20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 41 Legend, 42 GREAT! movies action, 46 Channel 5 +1, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 74 Dave ja vu, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 203 CITV, 208 POP MAX, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 14 others

COM5
ArqA
 H max
C31- (553.8MHz)228mDTG-8100,000W
Channel icons
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, 57 Smithsonian Channel, 60 Drama +1, 70 Quest +1, 75 Yesterday +1, 83 Together TV, 233 Sky News, plus 9 others

COM6
ArqB
 H max
C37 (602.0MHz)228mDTG-8100,000W
Channel icons
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 88 Classic Hits, 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)

Are you trying to watch these 0 Freeview HD channels?


The Sudbury (Suffolk, England) mast is not one of the extended Freeview HD (COM7 and COM8) transmitters, it does not provide these high definition (HD) channels: .

If you want to watch these HD channels, either use Freesat HD, or move your TV aerial must point to one of the 30 Full Freeview HD transmitters. For more information see the want to know which transmitters will carry extra Freeview HD? 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
Wednesday, 25 April 2012
J
jb38
sentiment_very_satisfiedPlatinum

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.

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jb38's 7,179 posts GB
J
jb38
sentiment_very_satisfiedPlatinum

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
Dave Lindsay
sentiment_very_satisfiedPlatinum

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
N
Nick
sentiment_satisfiedGold

10:44 PM
Woodbridge

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 377 posts GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

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
N
Nick
sentiment_satisfiedGold

11:50 PM

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

link to this comment
Nick's 377 posts GB
Thursday, 26 April 2012
Dave Lindsay
sentiment_very_satisfiedPlatinum

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?

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Dave Lindsay's 5,724 posts GB
N
Nick
sentiment_satisfiedGold

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 377 posts GB
J
John Chambers
4:46 PM
Witham

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.



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John Chambers's 4 posts GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

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 | ukfree.tv - independent free digital TV advice

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

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Dave Lindsay's 5,724 posts GB
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