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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
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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, plus 16 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, 107 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! 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

COM5
ArqA
 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

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, 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
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
Friday, 27 July 2012
N
Nick
sentiment_satisfiedGold

6:16 PM
Woodbridge

Gentlemen, thank you.
I do not actually want Dover, so I only need one aerial, on Sudbury, provided it works.
Now I will tell you something that will make you think I am barking.
Using the Icecrypt box, with two homemade aerials, this morning, each in turn on the same high pole in the garden the following happened.
Aerial 1 received all muxes pointed at Sudbury.
Aerial 2, which I consider much higher gain, received all but channel 60. I then turned it 90 degrees approx to see if I could get Tac, but left it on the Sudbury muxes, before a retune. I found that I then got ALL Sudbury muxes!
I then put aerial 1 back, pointed the same way, and got nothing, as should have been the case with aerial 2.
For your info, aerial 2 is a tribeam, with the outer two sets of directors designed for group cd and the centre set for group b. The dipole was a compromise between the two, more or less square and based on the old J beam slot aerial Thus each line of directors hits it.
Finally, are you saying that a strong signal, which should not be so coming from Dover on c59 can knock out a Sudbury signal on 60 minus with the aerial pointed at Sudbury?

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Nick's 425 posts GB flag
Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
N
Nick
sentiment_satisfiedGold

6:34 PM
Woodbridge

My tribeam has a balun. The design is based on my very successful Dover aerial, except that the Dover one has three identical sets of directors as all channels used are in/near group cd. The dipole on the Sudbury one is only marginally bigger, in other words, it is still skewed for the higher channels at the expense of 41 and 44.

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Nick's 425 posts GB flag
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N
Nick
sentiment_satisfiedGold

6:52 PM
Woodbridge

Before you ask me if there are any trees in the way, there are, in the neighbour's garden, directly in line with.....Dover.

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Nick's 425 posts GB flag
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J
jb38
sentiment_very_satisfiedPlatinum

9:14 PM

Nick: In reply to your experiments with home made aerials, if No2 aerial received all but Ch60 from Sudbury, then whilst the box was still sitting on Sudbury muxes you turned the aerial around 90 degrees towards Tacolneston and by carrying out that action you then picked up Ch60 thereby making a full compliment of Sudbury channels, then it can only be for one of two reasons.

(1) that Sudbury's signal is being strongly reflected towards you from some large distant object and that is why you are receiving that station when the aerial isn't pointing towards it, or (2) that the directors on the aerial are acting like restrictors and are partially blocking the signal from reaching the active element, "but" with the element of restriction referred to being cleared when the aerial is turned sideways thereby allowing the signal direct access to the active element, the whole point about directors being that they "have" to be precisely aligned "exactly" facing the direction of the signal or they "will" act as partial blockers, this being why I never advocate high gain aerials being used in any situation unless its not too far off line of sight, and also why a Log aerial (any Log but short ones best) coupled with an amplifier of about 12 / 15db or so can receive far more consistent (and reliable) signals over a large piece of metal work.

What I suggest you do though is to leave your No1 aerial set up in operation and do not alter anything, just leaving it running like that to see how long the reception of all muxes holds out for before conditions cause changes to take place.



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jb38's 7,179 posts GB flag
Saturday, 28 July 2012
J
jb38
sentiment_very_satisfiedPlatinum

1:05 PM

Nick: Just a little addition, Re: > I then put aerial (1) back, pointed the same way, and got nothing <, "if" by that you are meaning that when you reconnected No1 aerial into the box again and pointed it in the same direction as was done with the No 2 aerial whereby it received all muxes from Sudbury on by doing this you got nothing, then that would suggest that No1 aerial "is" acting correctly, and that the the second possible reason (re: directors) could be responsible for this strange effect occurring on No 2 aerial, unless that is there was a coax braiding connection problem on the No2 aerial.

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jb38's 7,179 posts GB flag
Sunday, 29 July 2012
N
Nick
sentiment_satisfiedGold

9:14 PM
Woodbridge

Thank you gentlemen. I finally bit the bullet, got on the roof and put up the tribeam. It got a good signal on all muxes, facing the right way, 95 sig strength and at least 80 quality, although both wavered a bit.
I have resolved to leave it as it is, despite today c60 pixellating with sig quality down as low as 30 at times, oh dear, but think this is the best I am going to get. c60 does not like me, c58 has no such reservations!

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Nick's 425 posts GB flag
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N
Nick
sentiment_satisfiedGold

9:23 PM
Woodbridge

I only have a small problem now for you kindly to resolve. It insists on picking up the ITV 1 mux a second time on c59. I guess it must be Tac. I do not want this as I might find it pixellating because on wrong xmitter, even though it has already logged the Sudbury version.
When I retune the box, I withhold the aerial till I guess I am near c41 to stop it catching the Aldeburgh xmitter. But I cannot withhold the aerial between 58 and 60!

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Nick's 425 posts GB flag
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Monday, 30 July 2012
Dave Lindsay
sentiment_very_satisfiedPlatinum

11:35 AM

Nick: If your box has manual tuning, then the easy answer is to unplug the aerial so as to miss out C59. Then manually add the missing ones, 58, 60 and possibly 56. If it doesn't, then if you have another aerial that picks up all Sudbury's channels such as that on your shed then take the box there and tune it in.

I don't quite understand. If aerial 1 works, then why not install it on your roof to provide you with the full complement of channels in your house? If this is so, then it would suggest that it is possible to pick them all up, although as jb38 suggests, it might be worth trying it over a period of time to see if they all hold.

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

12:54 PM
Woodbridge

Thanks Dave.
I tried yesterday to put in the whole lot manually, having first deleted, but for some reason got all sorts of odd channels on 1,2, 3, and then BBC 1 etc on the wrong channels.
The shed aerial is on Dover.
I am talking about two different locations. I have been doing my tests at Holleley, which is better situated than Aldeburgh where I installed the tribeam.
Aerial one worked at Hollesley, but would have struggled at Aldeburgh. It is difficult to describe. Imagine a group c/d aerial, old fashioned 18, no balun. The dipole, folded, was doctored so that the bottom half inch widened out into group b. Then remove the two directors nearest the dipole and raise them an inch and replace. Then, an inch below the boom, put in a 7 inch director, then a six and a half, so there are two sets of directors initially, then they merge to take up the remaining 14 which are all 6 ins. Crafty eh?

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Nick's 425 posts GB flag
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Thursday, 2 August 2012
N
Norm De Plume
sentiment_satisfiedBronze

8:16 AM

Oh joy, I thought we were done with the retuning, but it looks like there's another retune on the way - Freeview channel numbers change on September 19th 2012 | ukfree.tv - 10 years of independent, free digital TV advice

Is this going to be the last one for a while or is there going to be a whole new tranche of retuning required (what about 4G for instance?)

At least I learned how to back up the other half's recording schedule on our Humax PVR some time ago as a retune deletes the list and it takes HOURS to put them all back manually. However, there must be a lot of other people who will be getting quite angry now.

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Norm De Plume's 36 posts GB flag
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