Full Freeview on the Sudbury (Suffolk, England) transmitter
Brian Butterworth first published this on - UK Free TV
Google Streetview | Google map | Bing map | Google Earth | 52.005,0.786 or 52°0'17"N 0°47'8"E | CO10 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.
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Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
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 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.
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?
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
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 West | Transposer | 1000 homes +1000 or more homes due to expansion of affected area? | |
Witham | Transposer | 14 km NE Chelmsford. | 118 homes |
How will the Sudbury (Suffolk, England) transmission frequencies change over time?
1984-97 | 1997-98 | 1998-2011 | 2011-13 | 1 Aug 2018 | |||||
B E T | B E T | B E T | E T | K T | |||||
C29 | SDN | ||||||||
C31 | ArqA | ||||||||
C35 | C5waves | C5waves | |||||||
C37 | ArqB | ||||||||
C41 | ITVwaves | ITVwaves | ITVwaves | D3+4 | D3+4 | ||||
C44 | BBC2waves | BBC2waves | BBC2waves | BBCA | BBCA | ||||
C47 | C4waves | C4waves | C4waves | BBCB | BBCB | ||||
C51tv_off | BBC1waves | BBC1waves | BBC1waves | ||||||
C56tv_off | ArqB | ||||||||
C58tv_off | SDN | ||||||||
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
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Monday, 12 November 2012
J
jb389:25 PM
Nick: I believe that I had mentioned some time back that the reason for this type of indication on mux Ch60 is because you are not actually receiving a "direct" signal from it, this most likely for reasons previously explained, and when you see the signal flashing between 0 - 90, the 90 is when the signal is being reflected towards you from some object, maybe even a high flying plane whilst changing course whereby its wings act like huge reflectors.
This type of thing was frequently witnessed on analogue reception and took the form of signal strength flutter being seen on the picture, the duration of usually lasting about a minute or so every time.
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J
jb3811:44 PM
Nick: Just noticed your other postings. As far as those responsible for testing things are concerned, this is something that will not be revealed by any of the indicators on a transmitter as radiation angles does not affect the loading, and even if it was on a subsequent field check then it would be a major problem to rectify once things are powered up.
I have to suffer exactly the same problem on Ch52 from Sandy, me having verified this by carrying out the procedure as mentioned in my somewhat lengthy posting, and although I have numerous facilities at my disposal there is absolutely nothing I can do about the situation.
Regarding you having reported that the engineering work is finished and yet the problem is still the same, yes! that's got to be expected as its not a transmitter problem.
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Tuesday, 13 November 2012
N
Nick9:42 AM
Aldeburgh
Thanks JB, but I thought we had more or less decided it WAS a transmitter problem.
I know aircraft cause signals to flutter, noticeable on fm, but my 0-90% is only for fractions of a second, only on C60, and happens at Aldeburgh and Hollesley, sufficiently far apart not to be suffering from the same object in the way. What did you think of my notion that the tx aerial might be facing a bit downhill, and therefore struggling to go far?
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Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
R
Robert3:06 PM
Does anyone know if the effect of 4G transmissions will be a problem to us receiving signals from Sudbury?
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N
Nick9:20 PM
Aldeburgh
If it means they lose C60, hope so.
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Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
J
jb3811:50 PM
Nick: You are placing too much emphasise on the way your aerial is facing, because when a signal is not being received on, or near to, line of sight then the reflective bursts of signal can be from any angle. (within reason!)
Most people who cares to experiment can see this sort of thing happening on most channels if they choose to enter a mux channel number from a station thats well out with their area into their receiving devices manual tuning menu, this in most devices allowing the tuner to act like a form of non db indicating signal meter, then if they observe the strength / quality indications for about 10 minutes or so they will no doubt see exactly what you do on mux Ch60 and caused by the same reasons.
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Thursday, 15 November 2012
N
Nick8:15 PM
Aldeburgh
Thank you, JB. At the risk of trying your patience further though, I am baffled why this only happens on c60, in two locations, when 58 is so strong.
I have a very good aerial, high mast, high location, and even used to get the former mux on c63 sometimes, which was only at 3kw.
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Nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Friday, 16 November 2012
T
Tony8:35 PM
Saffron Walden
All very peculiar. Still having problems with all channels apart from C58, which should be worse coverage as it, is a lower level transmitter than the rest. The remaining channels are completely unwatchable at 6pm but by 8-9pm things improve with only occasional/ partial pixelation. Havent checked the situation in the day yet.
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Tony's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
Saturday, 17 November 2012
J
jb389:17 PM
Tony: Although you may have already done this, but on a previous posting I see that you mention your aerial is pointing towards Sudbury, this making me wonder if have you have double checked to ensure that all of these channels that you report as being unviewable at times are actually being received from Sudbury and not Sandy? as Sandy is only about 4 degrees out from being a perfect rear pick up on your aerial, and according to the reception predictor Sandy is not that terribly different from Sudbury for reception, neither seen as being exactly sparkling at your location.
Sudbury : (@ 97degrees / 21 miles) 44 - 41 - 47(HD) - 58 - 60 - 56.
Sandy : (@ 281 degrees / 25 miles) 27 - 24 - 21(HD) - 51 - 52 - 48.
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Sunday, 18 November 2012
T
Tony9:47 AM
Saffron Walden
JB38: Thanks for the suggestion. Indeed I am able to pick up Sandy and sometimes the reception is better than Sudbury, when the aerial was originally installed (about 10 years ago) we had the choice of either transmitter as the reception was near identical. I am going to swing the aerial to Sandy today to see if I get any great improvement. If this fails I will try a new aerial (ATVs XB22WB) possibly on a longer pole. The main issue is the fact that we did have perfect reception until the recent round of engineering works.
link to this comment |
Tony's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
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