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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 26/09/2022 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-3100,000W
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-3100,000W
Channel icons
3 ITV (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 ITV +1 (Anglia east),

 H max
C47 (682.0MHz)229mDTG-6100,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV 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-3100,000W
Channel icons
12 Quest, 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 15 others

 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 8 others

 H max
C37 (602.0MHz)228mDTG-8100,000W
Channel icons
 FreeSports, 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 Aljazeera English, plus 19 others

DTG-3 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
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

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, 7 September 2013

11:41 PM

Thanks JB.
I do not connect the third leg of the pot to anything?
All my portables have plenty of contrast, they don't seem to go pale like big ones.
I do not think I have the facility to select RGB/composite. I know with Sky there is that facility but not sure if the same with small freeview box.

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nick's 373 posts GB

11:49 PM

Mike, thanks. I had one of those flat things once, I returned it to the shop. Whilst you could see the picture over a wide angle, unless you sat directly in front of it the picture was pale, and if you adjusted the thing to compensate for sitting at the side, it was no good for people sitting in front. But what irked me too was the way it showed the colour white. It was like looking at a fluorescent tube. You could tone it down, but never get any hue into it, ie make it a bit yellower.
Please see my previous numerous posts re Sudbury. It is ok in winter, this time of year signal on most muxes goes from 95% to zero in seconds. I had hoped when we went digital they would have overcome the problem of interference from Holland. No such luck.

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nick's 373 posts GB
Sunday, 8 September 2013

12:11 AM

nick: If you do not see any choices being offered on the TV then you are likely to be using composite video, but on the subject of the potentiometer, pin 17 is the common ground and so it should be connected to one side of the potentiometer and with scart pin 19 (comp out) being connected onto the other end, the wire that was "originally" connected to pin19 and which goes into the TV being connected into the potentiometers middle tag, this then enabling the comp output to the TV to sweep from zero signal to full strength.

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jb38's 7,179 posts GB

7:24 AM

thanks JB. This should reduce the sound buzz AND the picture 'overload?'

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nick's 373 posts GB

10:08 AM

nick: Yes, it should do, but with the proviso being that you have verified the problem is not being caused by a faulty connection on any of scart pin numbers 4 / 17 /18 / or 21 all of being grounding pins, because all you are effectively doing is reducing the video drive level being fed into the TV's comp video input.

But please note the following, that said concerning the mod refers to the scart plug that's connected into the box and not the TV (different pin numbers) as its easier to observe what's happening on the screen this way, but what to do first of all is remove the casing from the scart connector and for ease of identification mark the wires (using Tippex or similar) connected to pin 19 and also 16 then plug the connector back into the box.

Next, switch the TV and box on and select any channel whose picture content results in an element of buzz being heard then carry out the following test, carefully snip the wire where it joins pin 19's tag which should result in the picture vanishing as well as the buzz on the audio, albeit that the audio content of the channel the box is sitting on will still be heard, however if the picture did not vanish when you snipped 19 then the TV must be using its RGB input, and if the input mode is not selectable via the TV's set up menu then the way to force it to switch to comp is by snipping the wire on pin 16, you could check this before doing so by temporarily shorting pin 16 onto one of the ground pins, the only problem there being that you "might" have to switch the TV to standby then back on again "whilst holding the short in place" before it will switch.

The final point being, that although I mentioned using a 1k pot this is because that any enthusiast in this field is more likely to have this (or a higher) value kicking around, whereas a much lower value of say about 200 ohms (or slightly less) would be better by it give a more even sweep across the adjustment range as you are only dealing with a low impedance circuit, the effect of a pot being too high a value being that it acts more like an on / off switch rather than a variable.

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jb38's 7,179 posts GB

1:59 PM

nick: Re: subject of the potentiometer, if you are acquaint with soldering on smaller items then you could use a skeleton preset of the smaller variety and solder its two fixed tags directly across pins 17 & 19 on the scart plug, the wire previously removed from 19 being soldered onto the presets variable tag, this making a really neat job of it.

The advantage with skeleton presets being that they can easily be obtained in a range of lower values plus of course they are really cheap!

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jb38's 7,179 posts GB

11:55 PM

thanks JB, I have several second hand ones, don't know what you call them, about 1cm square.

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nick's 373 posts GB
Saturday, 7 December 2013
David W
3:31 PM

BBC Red Button HD (303) seems to have disappeared from the EPG. Is this related to the introduction of the new BBC HD channels?

link to this comment
David W's 7 posts GB

4:11 PM

David W: yes. The HD red button service has closed.

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Briantist's 38,844 posts GB
Monday, 9 December 2013
David W
10:40 AM

CBBC HD and BBC Three HD currently show up on the EPG. Do you know if the others (BBC Four and News) will be also be available from the 10th Dec, or are they not for this region?

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David W's 7 posts GB
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