Full Freeview on the Sudbury (Suffolk, England) transmitter
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.
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._______
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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Sunday, 14 June 2015
T
tom toolan8:15 PM
Haverhill
Hi I live at CB9 7JD, and in the last two weeks we have been unable to watch freeview, sepsically ITV, Ch4, actually anything which is not a BBC chanel. Something has happend very recently and it impact on two different devices.
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tom's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
Friday, 19 June 2015
P
Paul webster5:08 PM
Multiplex PSB3 - BBCB - in Woodbridge Suffolk as started to freeze frame even though the signal strength says good. Sound is OK but has a static and jumping picture. 17/06/2015
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Dave Lindsay
5:59 PM
5:59 PM
Paul webster: Someone else posted about an issue with PSB3 from Woodbridge on Wednesday:
Freeview signals: too much of a good thing is bad for you
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Thursday, 9 July 2015
R
Robert Bird10:33 AM
I live in IP68SA and have an issue with, pretty much, all BBC chanels, with severe blocking or just no signal for most of the day, in normal def as hi def seems ok 90% of the time but these are occasionally blocky - this has been going on for over two weeks. My neighbour is having the same problems.
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Saturday, 11 July 2015
L
Lewis Brooke7:32 PM
All channels have poor reception tonight even the basic channels.. Yet apparently no reported problems.. Yer if you say so.. Think you need to take a look as this is not acceptable...!!!
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Sunday, 12 July 2015
M
MikeB11:45 AM
Lewis Brooke: If 440,000 people were complaining about the transmitter having a problem, thats one thing, but if its just you, then the problem probably lies at your end. If your getting poor signal strength (and make sure your tuned into the correct transmitter) then you most likely have a problem with your aerial system, perhaps a loose or broken cable, etc. Check from the back of the TV, and often it might be nothing more than a loose or damaged aerial lead.
BTW - we have no idea as to what sort of signal you should get, becuase we have no idea where you are.
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Monday, 2 November 2015
D
David Gibson10:08 PM
Ipswich
I live in Ipswich at IP1 3RD, and I (try) and get Freeview via an expensive high-gain aerial in my roof space, with an aerial splitter/amplifier. I am served by the Sudbury transmitter, and I cannot receive any other station.
However,since Saturday evening I have seen loss of some or most of the channels with a very variable signal strength. EG the BBC multiplex varies between a picture, then breakup, then the decoder reports no signal. This is affecting most of the services, such as BBC, ITV, channel5 and a lot of the other assorted ones.
I assume this is caused by the weather conditions, with a distant station interfering with the Sudbury signal. This has been going n for some days, which means very poor value for my TV licence. Is anything going to change the situation for the future, or should I go for Freesat? At least the dropouts there are relatively short duration.
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David's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Tuesday, 3 November 2015
M
MikeP12:26 PM
Trowbridge
David Gibson:
As there are reports of such rec[etion difficulties across the southern part of England it seems highly likely that the weather is causing disruption. There is nothing anyone can do to remedy this as it is a perfectly natural occurence that has been observed, off and on, for more than 60 years (since we started using RF signals at frequencies that are affected by such temerparure inversions).
Whether you movce to Freesat is your choice. The TV licence is irrelevant to natural events.
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MikeP's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Sunday, 8 November 2015
N
nick5:36 PM
no signal on any channel from Sudbury lately, doubtless the poor wee thing knocked out by fog
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Saturday, 28 November 2015
Dale Rumbold
11:20 AM
Ipswich
11:20 AM
Ipswich
Hi ; Yesterday and today have had problems on the BBC Channels, both SD and HD, on Freeview from Sudbury. Every few seconds the bottom quarter of the picture 'flickers' . First noticed this on BBC1 SD last night (27th Nov) during Look East, but have just checked and same problem still occurring on BBC1 and BBC2 both SD and HD today (28th Nov). Commercial channels (ITV etc) are all functioning normally. I'm at IP2 9XY.
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Dale's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Sunday, 29 November 2015
M
MikeP2:56 PM
Trowbridge
Dale Rumbold:
That's a very unusual problem! Have you chec ked with a neighbour to see if they are getting the same effect on their Freeview service? If they are not, then it is likely to be a fault in your equipment.
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MikeP's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Monday, 30 November 2015
Dale Rumbold
10:53 AM
10:53 AM
All working normally again by Saturday evening. Might be the telly, but strange it only happened on the BBC Channels across 2 MUXes and protocols.
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Dale's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Saturday, 5 December 2015
M
MarkO5:21 PM
Hi, My TV signal was fine until 3 days ago (Hythe, Colchester). I;ve checked all internal connections and a friend over the road has a perfect signal. Could mine be to do with the "possible weak signal" from the Sudbury transmitter? It's very annoying now as I have NO signal whatsoever and NO channels. I went to work one morning and it was fine, come home and nothing since Thursday :( help!
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MikeB6:33 PM
MarkO: If the bloke over the road has a perfect signal, and your not, and your both using the same transmitter, logically, it has to be your system. 'No Signal' is normally a broken cable, etc, and since we've had/having high winds at the moment, it sounds like thats the problem. You said you checked all the internal cables, etc - great, but what about the ones you cannot check?
Might need someone with a ladder, etc, but check the signal path, etc again, to make sure its something you cannpt repair yourself.
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MarkO6:47 PM
Thanks, I'm in a block of flats so not easy. Luckily the neighbour is having the same problem so might be the block
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MikeB8:08 PM
MarkO: Could well be the block. Always worth checking what signal strength other people are getting and what transmitter they actually tuned into. It could well be that there is a central fault, but the signal is weakened, and not out entirely (hence the reason why the someone else is fine, or at least they haven't noticed a problem). However, if you and some others also have a possibly weak link as well, then the two faults sort of combine.
Hope it gets sorted.
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Wednesday, 2 March 2016
N
nick11:09 PM
so, I get a large aerial to pick up the main transmitter for Suffolk, Sudbury, as opposed to freeview light from my local relay, then lose Al Jazeera from channel 133 and find I cannot get it on 108. Brilliant, another clever move, freeview!
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jb3811:56 PM
nick : There's no chance of receiving AlJazerra (108) in the Suffolk area anyway, simply because said programme is now broadcast on COM7 which is not part of the multiplex line up at Sudbury.
Of course even if it was, only viewers with TV's or boxes capable of receiving HD transmissions could view the channel as COM7 is an HD multiplex, whereas previously when it was broadcast on COM6 anyone could, COM6 being a standard SD transmitter.
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Wednesday, 9 March 2016
N
nick8:20 PM
thanks, JB, but why is Sudbury exempt from the new multiplex? It is not a relay, supposed to offer full service. Why also has Aljazeera left us in the lurch by vacating 133?
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Saturday, 30 April 2016
T
Tim2:09 PM
Why can't you transmit BBC4 HD on the old BBC3 HD channel. Can't be that difficult can it?
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because Five HD is going to be using this slot but really annoyed we have now lost CBS drama if other channels going to move to com 7 & 8 its best dumping freeview to get freesat
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Jim 9:07 PM
I can get all channels full strength from the Sudbury transmitter bar channel 47. No signal at all, which loses me Al Jazeera and other channels.
This is on 3 different TV's in the house. Signal is boosted.
Could anyone shed any light please?
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J
jb389:44 PM
Jim : Mux 47, if this is what you are meaning and not EPG47? is an HD transmitter only receivable on TV's or boxes fitted with DVB-T2 tuners, can you receive BBC HD on 101?
If though you can, and are meaning that you are unable to view 4seven (47) but can CBS action on (64), then carry out a retune on your TV to update the programme guide, however, if by any chance you are unable to view either of the two then you are not receiving COM6.
Further advice dependant on reply.
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Sunday, 8 May 2016
T
The Snail4:21 PM
Chelmsford
I have lost transmission from
C56
C60
C58
C60 and C58 in the last fortnight and C56 as of today 8/5/2016
We had been receiving the programmes on these IMUXs for several years.
Auto tuning on my TV finds only all channels other than the above.i.e.C41 C44 and C47.
It is not the television since both Freeview Boxes in the house suffer from this problem.
I was sent a C60 filter by At800 but this seemed to help as on Saturday when I fitted the filter the C60 IMUX was visible for manual tuning. This IMUX (C60) has now disappeared even with the filter fitted.
What is going on:
1. It does not seem to be a TV problem - both Freeview boxes both 'see' the same IMUXes
2. Does not seem to an aerial problem as we have been getting these IMUXes until recently.
3. Since C60 filter now makes no difference -it is not likely to be 4G interference.
So has anything happened/changed at Sudbury to result in what I describe?
My postcode is CM2 8EB .
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The's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
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MikeB6:44 PM
The Snail: Whats your signal strength on all the muxes? If some muxes are vanishing, but others just holding on, that points to a possible wiring problem, with some muxes going, but others (even though they might be of the same power) surviving.
Since they are on both TV's (same brand, hence similar tuners?), that points to a common problem, so its likely to be a cable problem from the aerial to where the signal splits. Do you have a booster? And could it be failing?
I suspect that a cable might literally be hanging by a thread....
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Monday, 9 May 2016
N
nick5:22 PM
I am not pleased that Sudbury describes itself as main transmitter yet we no longer get Al Jazeera. This is a misleading description.
I went to a lot of trouble to pick up this transmitter as opposed to our local 'light' one and now it fails to do what it claims.
Why does it not carry the extra muxes?
Why could not Al J start using channel 133 again so we can see it?
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Tuesday, 10 May 2016
C
Chris10:43 AM
Chelmsford
In response to the snail, I live in Chelmsford CM1 7DW and have checked this morning and can receive all Sudbury channels except 47 (I don't have Freeview HD). Some in Chelmsford receive Crystal Palace, some Sudbury and some both transmitters; it is very much a street by street situation and I don't know what snail should be watching as we are on the other side of Chelmsford 44m a.m.s.l. and with a good sight line to Sudbury
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Chris's: mapC's Freeview map terrainC's terrain plot wavesC's frequency data C's Freeview Detailed Coverage
Wednesday, 11 May 2016
MikeP
2:15 PM
Trowbridge
2:15 PM
Trowbridge
Nick:
The presence or absence of Al Jazeera does not define a Full Service transmitter. All transmitters carry all the PSB muxes and the Full Service ones carry many of the COM muxes. 'Lite' transmitters do not carry the COM services. Whether a particular transmitter carries any of the optional channels, like Al Jezeera, is entirely up to that particular broadcaster. If they don't want to be carried on any of the muxes allocated to Sudbury then they don't have to pay for it.
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MikeP's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Monday, 6 June 2016
R
Richard Cooper9:46 AM
Norwich
Good Morning. This is Richard in Norwich on Monday 6th June, writing at 9:30 a.m. I normally receive my tv signals from Tacolneston, 8 miles down the road from here, however, this morning, I did a re-tune and discovered I had duplicate channels for the PSB 1 and PSB 2 services. A closer inspection revealed that these were coming in on channels 44 and 41 respectively, which must be from Sudbury, more than 50 miles away! This must be due to tropospheric 'lift' or 'inversion' conditions. I wonder how long it will last?
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Richard's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
MikeP
2:39 PM
2:39 PM
Richard Cooper:
This atmospheric effect usually lasts a few days while the air temperature is quite high and there are conditions to create temperature inversions, others on this site also give information on this natural phenomenon.
Whilst these conditions last you should *not* retune your equipment else you are likely to lose channels rather than gain!
That you found signals from 50 miles away proves it is this effect. Sometimes, signals from several hundred miles away can be received under these conditions. In the 'old' analogue days it caused interference but with digital encoding it tends to cause apparent loss of some signals - which is why you should not retune!
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Thursday, 9 June 2016
N
nick7:33 AM
over the last few days we have regularly lost ALL multiplexes on all tvs on all aerials. This is doubtless due to the Dutchmen who have been blotting out Sudbury for decades. Do those who constantly advertize the 'benefits' of freeview not take this on board?
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Richard Cooper9:23 AM
Norwich
nick: Hi, Nick. The main advantage of Freeview is that it is less expensive and easier than the other options for watching live television. The number of channels on offer is acceptable to the majority of tv viewers in the UK. The Freeview transmitter network as well as the Freeview digital tv systems in use were both planned as carefully as possible so as to minimise the effects of tropospheric scatter, 'lift', atmospheric or European interference, whatever you want to call it, so, 'Yes', the proponents of Freeview did take this on board! Out of interest, two questions for you for starters: (1). How far are you from the Sudbury transmitter? ( Your postcode would be a bonus) and (2). What is your Freeview equipment? i.e. is it a cheap or more expensive setup? The cheapest Freeview boxes have a poor reputation because they use poor quality electronic components, resulting in poor performance, poor signal sensitivity and poor signal quality. Assuming you've read this post. I'd appreciate your reply to ascertain whether we can advise you further. Richard, Norwich, Thurs. 9th. June, 2016 at 09:20 a.m.
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Richard's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
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Paul11:52 AM
Dunmow cm6 1xu no signal whatsoever since couple of days!
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Richard Cooper12:49 PM
Norwich
Paul: Hi, Paul. Quoting from the official Digital UK website, "Latest News: Viewers in some parts of the UK may experience temporary disruption to their TV signal today due to high atmospheric pressure. We advise that you do not retune - reception will return to normal once this weather system passes." Should have passed us by by Saturday, all being well! Richard, Norwich.
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Richard's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
Saturday, 9 July 2016
N
nick5:15 PM
Aldeburgh
Hi Richard,
Humax! But have cheaper ones which are no worse.
IP15 5HF
Use Sudbury with super aerial as local xmitter is 'light.'
Near 100% signal/quality, all muxes, but gets knocked out entirely at the slightest cause, Dutchmen, rain, fog.
Not impressed, used to get interference on analogue, but never 'no signal.'
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nick's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
R
Richard Cooper7:29 PM
Norwich
nick: Maybe you are one of those who simply gets 'too much' signal, which can cause freeze-ups due to overloading! 85% is the max signal strength recommended for HD. Richard, Norwich.
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Richard's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
Tuesday, 19 July 2016
N
nick11:39 PM
thanks, Richard, but would think if that were so it would be all the time, whereas my problem is weather related, and the signal and quality drop to zero.
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Wednesday, 20 July 2016
S
StevensOnln111:17 AM
nick: Having too much signal can cause the tuner to become overloaded and appear to have no signal. If you are seeing 100% during normal conditions then you already have the maximum amount of signal the tuner can handle. Try fitting an attenuator such as one from the link below to reduce the amount of signal reaching the tuner. There are also 6db, 9db and 12db versions which can be connected together in any combination to reduce the signal further if required. I have a 3db connected to my main TV which has successfully stopped breakup I was experiencing on some of the HD channels.
3dB Coax Plug Inline ATTENUATOR: Amazon.co.uk: Electronics
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Thursday, 4 August 2016
S
Steve Goodey11:39 AM
BBC FOUR HD has now appeared on Sudbury.
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Richard Cooper11:43 AM
Steve Goodey: Hi, Steve. That's nice for you. I think they may have done it just before the Olympic (Summer) Games 2016 open. Richard, Norwich.
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Dale Rumbold
7:03 PM
7:03 PM
Unfortunately it is only for the duration of the Olympics, and takes the place of CBBC HD : it will disappear again in a couple of weeks.
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Tuesday, 9 August 2016
N
nick7:25 AM
Steve,
I had to go to this large aerial in order to get the muxes on c56, 58 and particularly 60. If I now attenuate, will lose them. C60 was so difficult to get. I had to remove the wall plate and wire coax direct from the booster on the aerial straight in the back of the set.
I do in fact have four aerials and 4 tvs, three of those aerials are lower down, therefore with lower signal, and all do precisely the same thing.
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R
Richard Cooper7:33 AM
nick: Hi, Nick. As you've stated that channel 60 was particularly difficult, I suspect you may well need a 4Gfilter. You can get one entirely free of charge from the organisation that is out there to prevent tv viewers from getting tv interference from 4G 'phone masts. Here is its web address:-
at800 | 4G & Freeview | 4G interference | 4G Filters | 800 MHz
Hope this helps, Richard, Norwich. Tuesday, 9th. August, 2016.
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N
nicholas mugford7:27 PM
Hi.nick,try inverting the aerial upwards as sometimes the signals suffer from being twisted and the signal
moves between the horizontal and vertical ,try an aerial at ground level
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Monday, 22 August 2016
Hi , will BBC4 HD be staying on Sudbury when the Olympics finish ? Thanks
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Thursday, 8 September 2016
Friday, 30 December 2016
I
Iain12:26 AM
We have had no problems with reception until today. Aerial professionally installed and perfect reception. We have tried re scanning the channels and lost a fair few in the process. Has anything significant happen today? IP12
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MikeP
4:17 PM
4:17 PM
Iain:
For any contributor to this website to offer any meaningful advice we need a full post code, the part you have given is not sufficient as it covers quite a large area and is not specific your location,
In the circumstances your quote you should never retune, all that does is lose some channels that you will have no idea about when the problem is resolved!
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Saturday, 31 December 2016
H
hardy9:42 AM
the significant event is the very high pressure weather causing interference from normally distant tv and other transmitters. That's why its foggy too. I expect something similar on Tuesday.
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Tuesday, 3 January 2017
R
Richard Cooper10:48 AM
hardy: Are you experiencing any 'lift' today, now it's Tuesday? Richard, Norwich.
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Richard's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
H
hardy11:13 AM
no. Reception is normal today here . (Cromer area) . the peak high pressure looks more like it will be Thursday.
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Monday, 16 January 2017
A
Andy Bradbery10:13 PM
Braintree
CM7 1DQ
Hi I live in Braintree, Essex (Post Code Top Right). My problems are with Com 5 it seems, everything which is transmitted on Com 5 is picxulatted and making the popping noise. In Braintree I am pointing at the Sudbury Transmitter. 2 of the best channel are on Com 5 (sky sports & talksport radio) and can not get them.
I live in a block of 4 flats which has a massive pole one end of the building with the aerial at the very top of the pole, followed by other aerials about 3 or 4 in total, think one maybe a radio one and a digital dish at the very bottom, this is maintained by the local council contractors, so not a lot of hope there. all the aerials are fed through to cables into each flat. I have tried a boaster inside but with making no difference.
Is there anything I can do to cure this problem.
Thank you for any help you can give.
Andy
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Andy's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
S
StevensOnln110:55 PM
Andy Bradbery: Have you checked with any neighbours in your building to see if they are experiencing the same problem. If they are, it's unlikely that there's anything you'll be able to do yourself so it would be a case of contacting the council and asking for it to be investigated.
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Wednesday, 18 January 2017
H
hardy9:17 AM
Braintree is quite close to Sudbury . it maybe that com5 is too strong . I would try an attenuator . An alternative is to try to receive your programmes from Crystal palace instead of Sudbury. A wideband aerial would probably pick up Sudbury and crystal palace . Doing a retune to avoid picking up Sudbury you can unplug the aerial when the autotune scan gets to UHF channel 30.
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Friday, 2 June 2017
Hi
Last night 1.6.2017 I lost freeview television reception.
I was still able to receive free sat but my recorder is freeview so unable to record or watch free sat tv.
This morning everything appears to be back to normal.
My question is was there a broadcasting problem of some sort last night.?.?
Thanks
Roger
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S
StevensOnln112:49 PM
Roger Sharman: There are no faults showing for the Sudbury transmitter. You may have been experiencing interference from distant transmitters as is common with the current weather conditions.
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Thursday, 22 June 2017
R
r green10:21 AM
Hitachi model L19H01, says it finds 139 channels, but no 2,24, nothing between about 271 to 711 (no e.g.601 red button) ok until about a week ago. Retuned several times, and tried without ariel to clear all channels as well. Anglia (Sudbury transmitter) Other tvs find all.
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S
StevensOnln111:04 AM
r green: Please provide a full postcode so we can see where you are in relation to the transmitter and your predicted signal strength etc. Are your other TVs connected to the same aerial? If they are (and if practical to do so) take the TV with missing channels to one of the working ones and connect it to the aerial and retune to restore the missing channels. This will confirm if the fault is with the cable from the aerial (or splitter/amplifier if all your TVs use the same aerial).
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r green5:12 PM
Ipswich
r green: Kesgrave ip5 2nz. Retuned using socket supplying main tv. signal strength reported strong at 10. Main tv and 2 others have no problem finding eg 601 or 2.
chanel list is about 110 instead of 139 which the other tvs find.
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r's: ...
S
StevensOnln17:15 PM
r green: That all points to be fault being somewhere in the cables or connections between the splitter/amplifier and the point where you are loosing channels. Do you know where the splitter/amplifier is that all of your aerial sockets connect back to? Try swapping the cable from that socket to the TV with one from another socket that you know works. If the problem remains, unscrew the socket and check the cable is fully attached on the back and that there are no loose strands of the outer metal braid or foil touching the inner conductor, causing a short circuit. If that looks good, go to the splitter/amplifier and try swapping the cable from the point where you are missing channels with one that you know works. If the fault remains, you have further confirmation that the fault is somewhere within that cable rather than the splitter/amplifier or anywhere else.
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Friday, 23 June 2017
MikeP
12:07 PM
12:07 PM
R GreenL
You may find that ypu have too much signal for the Hitachi TV's tuner. A strength of 10 is too much. TV sets vary in terms of their tuner sensitivity and your Hitachi may not like the signals being that strong. Try fitting an attenuator in line with the aerial feed to that TV only. They are available in different 'strengths'so try a 6dB one first. They are very cheap to buy, even the good quality ones are not too costly.
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Tuesday, 1 August 2017
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john c5:19 PM
Brian, is Sudbury definitely changing from E to K group in December 2018? and if replacing an aerial now should it be a K type for future compatibility?
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StevensOnln17:29 PM
john c: If you fit a group K aerial now you will have worse reception on the COM muxes until the frequency changes take place. The best aerials to use for nearly everyone is a wideband type such as a log periodic design which will receive all current and future frequencies used for Freeview from any transmitter. Bear in mind that there is a government scheme to provide replacement aerials for households who loose reception after the frequency changes, so there is no pressing need to replace your aerial now if that is the sole reason for doing so.
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Thursday, 3 August 2017
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Abe8:42 AM
After the recent retune BBC2 has terrible break up problems. Before it was rock solid. BBC1 is perfect. Anyone else had the same problem? Sudbury transmitter area.
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StevensOnln19:47 AM
Abe: BBC1 and BBC2 are both broadcast together on the same multiplex, so that would suggest that your TV may be tuned to more than one transmitter. Please provide a full postcode so we can see which transmitters cover your location, where you are in relation to them and predicted coverage etc.
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Sunday, 13 August 2017
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Drek Springall7:56 PM
Colchester
Prior to the recent freeview channel changes I had every channel and a strong signal. Every channel was approx. 90% and the BBC channels at 100%. But it took me more than fifteen attempted channel rescans to get most of my channels back (not all) but now with poor signals and blocking / pixelated pictures on most channels. For one example Film four is now unwatchable.
What has changed?
Post code: CO7 8QF
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Drek's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
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nicholas8:49 PM
Hi,you could check reception with a second hand fv box or overhaul yr aerial system,try a set top aerial and see what local reception condiions are like,sometimes the tuners go faulty after a number of years.Myself,i'm lucky,i live in a swamp area.
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nicholas8:52 PM
Hi,there is another way to improve reception but it is only open to those who can use a soldering iron and are capable of doing work on aerials.n............
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MikeB9:06 PM
Peterborough
Drek Springall: Check the DigitalUK and terrain links - Crystal Palace and Sandy Heath are almost on the same bearing as your original transmitter, but would come up first in any scan - so its likely thats what the tuner has found first. Check, and if thats the case, manually retune.
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MikeB's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Monday, 14 August 2017
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nicholas9:08 PM
Hi,one way of improving yr reception is to remove the aluminum dipole which has the coax cable attached to
it and replace it with an insulated thick copper wire,bent to the shape of the dipole,yr aerial should pick better,copper is very good for aerials,as a instance,north of oxford,on a set top aerial, i can get a locked
picture from hannington,abt 40 miles south,before it was 5percent on the signal strength.This is done at yr
risk,NO legal responseibilty of any kind accepted.You might find the signals too strong,worth a try if you're up to it,don't do anything you can't cope with.
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Tuesday, 15 August 2017
MikeP
10:58 AM
10:58 AM
nicholas:
This is not generally a good idea. The replacement dipole element needs to be exactly the same domensions and shape as the removed aluminium one, mounted at exactly the same position as the old one and in the same orientation of course. Further, copper develops green verdigree on exposure to the atmosphere and that is a very poor conductor. Plus there could well be electrolytic reactions between the copper and the terminals unless they are all plated to prevent both corrosion and electrolysis.
The best way of improving reception is to use the correct aerial, mounted correctly outdoors, aimed accurately at the transmitter and properly connected using good quality cables.
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nicholas10:39 PM
MikeP: This is the basic construction,you would need to protect the the wire,etc,theres corrison between the copper coax and the connections,in all aerials after a while,i have had an aerial last over 8yrs,the wire needs to be the shape of the folded dipole but so long it looks like it,it works,sorry all aerial fittings are subject to corrsion but the advice is for people who can handle same but where theres a problem of marginal signal pick up its worth trying it,i have an set top here cause the field strength is high enough not to need an aerial.The information is for people who are able to do the work,n............
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nicholas10:43 PM
Sorry,as i said,if the pick up is still proving to be difficult,its a good solution,if preamps will be affected by the mobile phone system prove to be cointerproductive.If i can get a locked picture from Hannington at 40 or so miles on a indoor set top aerial then it works,all the others gave me 5percent on the box,n.............
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Wednesday, 16 August 2017
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Hardy8:17 AM
Replacing the dipole is not a general solution . It just happened in your case that using an insulated dipole shifted the frequency response to improve the wanted channel. Sheer luck! Usually any modification of an aerial will not improve reception.
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Hardy8:48 AM
Colchester should see a strong signal from Sudbury with the correct aerial . AS Mike says because its easy for the tuner to pick up the wrong transmitters on similar frequencies (in that area) my guess is that a manual tune is necessary . Use the listed UHF channel numbers listed on the Sudbury freeview page to do this. (note that the "channels" referred to in tuning are UHF channels not the freeview channels)
Some tvs will need the tuning first to be cleared by doing an auto tune with the aerial disconnected.
side note .. the ideal aerial is a type E . I wouldn't yet buy a new aerial because next year Sudbury will get best reception on a type K ! Though in a strong signal area like Colchester if you have a wideband aerial it should work now and next year too after the major frequency change.
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MikeP
10:36 AM
10:36 AM
Nicholas:
Having worked in the TV electronics and software industries in technical roles all my working life I am able to make most things in wood, metal, ceramics, etc. I have built many electronic devices over the years ranging from radios, TVs to transmitters and audio high fidelity amplifiers.
When designing an aerial dipole, the shape and dimensions are critical so it covers the frequencies wanted, any variation can give unexpectedly poor results. A piece or copper wire is not suitable for use other than for a very narrow range of frequencies and then only if it is accurately shaped.
Under the Electrical Interference legislation, aerial amplifiers shouyld be imune from such interferenec, but cheap ones are susceptible.
Your 'solution' is not suitable for general use but some may wish to experiment, as you did.
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nicholas4:59 PM
MikeP: tHE wire dipole has a use in many radio/tv applications,as i have said,i have had a locked picture at ground level from hannington where other aerials failed,the shape isnt critical,as long it resembles the fold ed dipole,copper is very efficent in pickup,its worth a try.The signal indication on other aerials varied from 5 to 15,the copper provided a locked picture and sound.It provides a solution where a preamp could be overloaded.A aluminium dipole is just another piece of metal,just like the copper wire,the advantage it has a covering and careful insulation where the coax connects would give it a good lifetime,you are trying to do me down,i am on here to help provide solutions.
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nicholas5:09 PM
Hardy:sorry,it wasn't a case of good luck,aluminum has a efficency of 45%,copper has over 90%,it picked up and provided a locked picture from hannington at 40miles on a set top aerial, whereas other aerials did not ,if u dont like the solutions then don't attack them, i'm on here to provide solutions that don't cost too much money,n.........................
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Hardy10:55 PM
like Brian I have technical qualifications and have worked in aerial design and testing. Yes you can design a good aerial with copper but at UHF its no better than aluminium . I think you are probably making an assumption that because copper is a better conductor than aluminium it should automatically improve any aerial . It doesn't improve a UHF aerial because resistance is low due to the surface area. its mainly the thickness length and position of aerial elements that decides the performance. I'm sure you could improve a cheap aerial on certain channels by carefully optimising the dipole size but the point is its not whether its copper or aluminium that makes the difference.
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nicholas11:11 PM
Hardy: It picked hannington at 40miles with a locked picture,the other aerials couldnt,........I was surprised,a set top aerial producing a picture when the others at 30ft couldnt..n
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nicholas11:17 PM
so how come?Dont give the luck nonsence,the copper dipole due to its effincey picked up enough signal at ground level,..you believe what you want to,the facts speak for themself,,apolgies for spelling.n................
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Thursday, 17 August 2017
MikeP
10:36 AM
10:36 AM
Nicholas:
Your assertions about using copper at UHF does not fit the known physics of aerial design.
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Saturday, 19 August 2017
H
Hardy9:17 AM
Nick unless you've tried a near identical dipole in aluminium you've havn't the full facts . I can see a lot of your posts give good info based on long experience but you have to be careful what you say if you have not got relevant training in the subject. I'll take up no more space on this subject.
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Sunday, 20 August 2017
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nicholas1:49 AM
Hardy: i have had self training for a long period,i advise people on solutions which they may take up at their entire risk,no responsibility taken or implied,the solutions are what i have tried,and found to have worked,what more can i say.perhaps it would be easier just to recommend freesat.i wonder why i bother sometimes........................
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nicholas1:53 AM
To all,i have found if freezing occurs,switch box on/off,it seems to work on humax,digital stuff can be a right pain sometimes,n............................
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Thursday, 31 August 2017
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John Broad8:49 PM
tou have successfully blotted a number of my channels on a Goodman 32" 10 years old. I am unable to access the menu to make any changes, being both technologically challenged and an O.A.P (87yrs) . Relying only on my state pension I cannot afford a new TV and to call somebody in could be pricey. Where do I go from here? Suggestions please.
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MikeB11:01 PM
Peterborough
John Broad: What do you mean by 'blotted'. If you mean they have vanished, then its more likely that your aerial has a fault. Try checking the connections and see if they come back.
You say you can't access the menu - is that because the remote doesnt work, or because the menu is locked with a PIN number? If you can find the manual, or simply give us the model/make (we could possibly find it for you online), then you might be able to reset it.
If the TV really is beyond help (and I suspect its not), then another decent 32, from a good brand (like the Samsung 32M5500), will cost around 300, and you can get that set up and tuned as well.
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MikeB's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Saturday, 9 September 2017
Having invested in costly equipment to get Sudbury rather than my local relay so as to get the full list of channels, is that transmitter ever going to live up to its name of a full service and give me the last multiplex so I can see Al Jazeera again?
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Sunday, 10 September 2017
MikeP
10:48 AM
10:48 AM
Nick Horrex:
If you mean when will it get COM7 and COM8, the answer is never as those mulitplexes are temporary ones offered only by 30 main transmitters and covering about 70% of the population. The plan is that the channels carried by those multiplexes will be included within the arrangements for when the adjustments to accommodate the loss of the 700MHz band, expected between now and the end of 2019. No definitive dates have been given as yet.
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Julian Fasler11:33 PM
The list of Freeview transmitter changes 2017-20 Upcoming Freeview transmitter changes 2017 to 2019 states that PSB1, 2, and 3 will remain on their current channels after next year. The table above indicates that they will move. Which is correct?
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Tuesday, 10 October 2017
thanks, Mike P.
There seem to be several empty channels. It is a shame Al Jazeera does not use one.
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Sunday, 22 October 2017
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Mr Paul Bradley1:43 PM
I think I have checked everything . My question is why am I receiving Meridian Local news on 103 HD from the Sudbury transmitter ?
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MikeP
1:48 PM
1:48 PM
Mr Paul Bradley:
The HD services are not currently available with regionalised news services, so the broadcasters are using a 'general' setting so there are not any blank screens. Local regional services are available on the SD versions, on channel 3 for example instead of channel 103.
It is expected that when the forthcoming alterations to transmission arrangements take effect then the broadcasters have the opportunity to 'regionalise' their HD offerings.
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Tuesday, 12 December 2017
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David Thorne1:23 PM
postcode CO168DD
I have a high gain triple boom aerial on a pole attached to the rear of my property approx 20ft above the ground pointing to the Sudbury transmitter..
All channels work except for the bbc channels which keep breaking up. if i point the aerial to the local transmitter they work fine but of course i cannot get all the other channels.
I have a 4G filter fitted and have tried all the reseting and retuning options available to me without success.
I suspect my aerial is picking up both signals from both transmitters but have no idea how to overcome it if that is the case. I have searched the net without result except some suggestions that this may be the case.
Hope you can advise.
many thanks
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StevensOnln12:29 PM
David Thorne: Firstly, have you checked that your TV is tuned to Sudbury on UHF 44 for BBC channels rather than Clacton on UHF 49? Also, what signal strength and quality readings do you get? According to the Digital UK checker, from next summer the Clacton relay will be gaining the COM4/5/6 multiplexes so in the long run you would probably be better off turning your aerial around, particularly as reception of Sudbury appears to be getting worse at your location from 2019.
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Tuesday, 6 February 2018
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Michael Firth9:58 AM
Hi,
I think your table for "How will the Sudbury (Suffolk, England) transmission frequencies change over time" is incorrect for the right hand column.
It shows all muxes changing on 31st March, which seems to contradict the Digital UK and Ofcom information.
Ofcom shows that the channel allocations will eventually become:
PSB1 - 44
PSB2 - 41
PSB3 - 47
COM4 - 29
COM5 - 31
COM6 -37
(from https://www.ofcom.org.uk/…lsx)
But doesn't give any dates for the change(s)
The DigitalUK site says that the only currently definite change is tomorrow (7th February), not the 31st March, and that it is only COM6 that is changing at this stage:
http://www.digitaluk.co.u….pdf
It is probably worth updating your page to prevent alarming people that all the PSB muxes will be moving to frequencies not receivable with an old "Group B" aerial!
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I sincerely hope the channel changes shown here for March are incorrect. Having invested in a new aerial and a freeview recorder box, it would appear that my aerial which is designed for the former group b and c will not get the main BBC and ITV channels which appear to be moving to a group A aerial.
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I think it is a liberty to make people invest in new aerials to receive freeview and then a few years later change the channels used so that yet another aerial is required.
If the latest changes result in viewers being unable to watch their tv's because the broadcasting channels have been moved to a different aerial group, is there a body we can complain to?
In my case a wideband aerial was not good enough, I specifically needed one biased towards the muxes on channels 56, 58 and 60 which were weak. Now they propose to move the channels out of aerial group, to the opposite end of the available frequency bands, around channel 30!
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StevensOnln17:14 PM
nick horrex: Anyone who relies on their aerial for reception (i.e. doesn't have satellite or cable) will be eligible for a free replacement aerial if they loose any of the PSB1-3 or COM4-6 multiplexes as a result of the 700MHz clearance changes (provided the existing aerial is in good condition and not damaged etc). The link below gives details of the Freeview Advice Line who will assist anyone who finds they have channels missing following any frequency changes at their transmitter and will arrange a free of charge engineer visit if the missing channels cannot be restored by talking the viewer through a manual retune.
Important changes to Freeview TV signals | Freeview
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