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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 25/09/2023 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
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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, 28 ITVBe, 30 E4 +1, 35 ITV1 +1 (Anglia east),

PSB3
BBCB
 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

COM4
SDN
 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

COM5
ArqA
 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

COM6
ArqB
 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
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
Tuesday, 28 June 2011
Transmitter engineering
sentiment_very_satisfiedOwner

11:42 PM

SUDBURY transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 15:09 today to 15:18 today BBC Digital TV (One, Two, Three, CBBC, News) Weak Signal from 16:29 today to 18:30 today BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 15:09 today to 16:2 Analogue BBC TWO Weak Signal from 19:29 yesterday to 22:47 yesterday [BBC] Over the next week Sudbury main transmitter: TV (analogue) working normally, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

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Transmitter engineering's 143,939 posts xx flag
Wednesday, 29 June 2011
Transmitter engineering
sentiment_very_satisfiedOwner

4:32 AM

SUDBURY transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 15:09 yesterday to 15:18 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 15:09 yesterday to 16:29 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Weak Signal from 16: Analogue BBC TWO Weak Signal from 19:29 on 27 Jun to 22:47 on 27 Jun [BBC] Over the next week Sudbury main transmitter: TV (analogue) working normally, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

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Transmitter engineering's 143,939 posts xx flag
Transmitter engineering
sentiment_very_satisfiedOwner

4:32 AM

SUDBURY transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 15:09 yesterday to 15:18 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 15:09 yesterday to 16:29 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Weak Signal from 16: Analogue BBC TWO Weak Signal from 19:29 on 27 Jun to 22:47 on 27 Jun [BBC] Over the next week Sudbury main transmitter: TV (analogue) working normally, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

link to this comment
Transmitter engineering's 143,939 posts xx flag
Transmitter engineering
sentiment_very_satisfiedOwner

6:27 AM

SUDBURY transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 15:09 yesterday to 15:18 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Weak Signal from 16:29 yesterday to 18:30 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 15: Analogue BBC TWO Weak Signal from 19:29 on 27 Jun to 22:47 on 27 Jun [BBC] Over the next week Sudbury main transmitter: TV (analogue) working normally, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

link to this comment
Transmitter engineering's 143,939 posts xx flag
Transmitter engineering
sentiment_very_satisfiedOwner

6:27 AM

SUDBURY transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 15:09 yesterday to 15:18 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Weak Signal from 16:29 yesterday to 18:30 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 15: Analogue BBC TWO Weak Signal from 19:29 on 27 Jun to 22:47 on 27 Jun [BBC] Over the next week Sudbury main transmitter: TV (analogue) working normally, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

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Transmitter engineering's 143,939 posts xx flag
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

5:52 PM
Maldon

Tosh: The predictor is based on 10 dBd of aerial gain (middling - XB16E has 11-15 dBd) and 3 dB of loss in cables (high - WF100 is rated at 15-18.3 dB per 100m, which if linear would take about a 15-20m run to drop 3 dB). It's also based on a maximum of 16 dB of rejection of signal from behind and to the side, an acceptance angle of about 40° (20° either side of the middle), and 16 dB of cross-polar rejection - rejection from the other polarization, so - if using Sudbury - rejecting vertically-polarized signals from the relays. Again, real aerials will beat this, though the exact amount depends on the frequency and angle. Larger aerials will generally reject more unwanted signal and have a narrower acceptance angle.

Therefore, the predictions can be quite conservative. Still, a prediction of 'poor' or 'nothing' is likely to indicate a problem.

Masthead amplification might be useful if the issue is simply that the signal will be too weak, but it's more likely that the problem will be co-channel interference.

The Rouncefall mast will use the same channels as Sudbury for the PSB services, timed so that for most people, the signals will arrive within the 'guard interval'. This idea - called a Single Frequency Network - reinforces the signals, but only if the timing is right. If it isn't, it stops the receiver decoding it completely. This may be why, for CM9 4TT, Digital UK predict poor reception for the PSBs but good or variable for the COMs. Again, it will depend on exactly how your aerial behaves - in this case it's the polar response of the aerial (angle to transmitters) that is important.

For that postcode, the trade predictor reckons Rouncefall should start out good but deteriorate next year, presumably as Tyne Tees switches over or possibly continental transmitters, while it's expected to get more reliable results from Dover!

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Mike Dimmick's 2,486 posts GB flag
Mike's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Thursday, 30 June 2011
Transmitter engineering
sentiment_very_satisfiedOwner

6:34 AM

SUDBURY transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 15:09 on 28 Jun to 15:18 on 28 Jun BBC Digital TV (One, Two, Three, CBBC, News) Weak Signal from 16:29 on 28 Jun to 18:30 on 28 Jun BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 15: Analogue BBC TWO Weak Signal from 19:29 on 27 Jun to 22:47 on 27 Jun [BBC] Over the next week Sudbury main transmitter: TV (analogue) working normally, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

link to this comment
Transmitter engineering's 143,939 posts xx flag
Transmitter engineering
sentiment_very_satisfiedOwner

6:34 AM

SUDBURY transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 15:09 on 28 Jun to 15:18 on 28 Jun BBC Digital TV (One, Two, Three, CBBC, News) Weak Signal from 16:29 on 28 Jun to 18:30 on 28 Jun BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 15: Analogue BBC TWO Weak Signal from 19:29 on 27 Jun to 22:47 on 27 Jun [BBC] Over the next week Sudbury main transmitter: TV (analogue) working normally, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

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Transmitter engineering's 143,939 posts xx flag
Transmitter engineering
sentiment_very_satisfiedOwner

8:39 AM

SUDBURY transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 15:09 on 28 Jun to 15:18 on 28 Jun BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 03:57 today to 04:01 today BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO re Analogue BBC TWO Weak Signal from 19:29 on 27 Jun to 22:47 on 27 Jun [BBC] Over the next week Sudbury main transmitter: TV (analogue) working normally, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

link to this comment
Transmitter engineering's 143,939 posts xx flag
Transmitter engineering
sentiment_very_satisfiedOwner

8:39 AM

SUDBURY transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 15:09 on 28 Jun to 15:18 on 28 Jun BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 03:57 today to 04:01 today BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO re Analogue BBC TWO Weak Signal from 19:29 on 27 Jun to 22:47 on 27 Jun [BBC] Over the next week Sudbury main transmitter: TV (analogue) working normally, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

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Transmitter engineering's 143,939 posts xx flag
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