Full Freeview on the Crystal Palace (Greater London, England) transmitter
 | Google Streetview |  | Google map |  | Bing map |  | Google Earth |  | 51.424,-0.076 or 51°25'26"N 0°4'32"W |  | SE19 1UE |
The symbol shows the location of the Crystal Palace (Greater London, England) transmitter which serves 4,490,000 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 Crystal Palace (Greater London, England) mast?
Crystal Palace transmitter - Crystal Palace transmitter: Possible effect on TV reception week commencing 04/11/2024 Pixelation or flickering on some or all channels 
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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
DTG-12 QSPK 8K 3/4 8.0Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
Which Freeview channels does the Crystal Palace 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
DTG-12 QSPK 8K 3/4 8.0Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
Which BBC and ITV regional news can I watch from the Crystal Palace transmitter?
BBC London 4.9m homes 18.4%
from London W1A 1AA, 12km north-northwest (335°)
to BBC London region - 55 masts.
ITV London News 4.9m homes 18.4%
from London WC1X 8XZ, 11km north-northwest (345°)
to ITV London region - 55 masts.
Are there any self-help relays?
| Charlton Athletic | Transposer | Redeveloped north stand Charlton Athletic Football Club | 130 homes |
| Deptford | Transposer | south-east London | 100 homes |
| Greenford | Transposer | 12 km N Heathrow Airport | 203 homes |
| Hendon | Transposer | Graham Park estate | 50 homes |
| White City | Transposer | 9 km W central London | 80 homes |
How will the Crystal Palace (Greater London, England) transmission frequencies change over time?
| 1950s-80s | 1984-97 | 1997-98 | 1998-2012 | 2012-13 | 21 Mar 2018 | ||||
| VHF | A K T | A K T | A K T | A K T | W T | ||||
| C1 | BBCtvwaves | ||||||||
| C22 | ArqA | ArqA | |||||||
| C23 | ITVwaves | ITVwaves | ITVwaves | BBCA | BBCA | ||||
| C25 | SDN | SDN | |||||||
| C26 | BBC1waves | BBC1waves | BBC1waves | D3+4 | D3+4 | ||||
| C28 | -ArqB | ArqB | |||||||
| C29 | LW | ||||||||
| C30 | C4waves | C4waves | C4waves | -BBCB | BBCB | ||||
| C33 | BBC2waves | BBC2waves | BBC2waves | com7 | |||||
| C35 | com8 | ||||||||
| C55tv_off | com7tv_off | ||||||||
| C56tv_off | COM8tv_off |
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 4 Apr 12 and 18 Apr 12.
How do the old analogue and currrent digital signal levels compare?
| Analogue 1-4 | 1000kW | |
| SDN, ARQA, ARQB, BBCA, D3+4, BBCB | (-7dB) 200kW | |
| com7 | (-13.7dB) 43.1kW | |
| com8 | (-14dB) 39.8kW | |
| Mux 1*, Mux 2*, Mux A*, Mux B*, Mux C*, Mux D*, LW | (-17dB) 20kW |
Local transmitter maps
Crystal Palace Freeview Crystal Palace DAB Crystal Palace AM/FM Crystal Palace TV region BBC London LondonWhich companies have run the Channel 3 services in the Crystal Palace transmitter area
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Tuesday, 4 December 2012
BillNick: I suggest that you fit an attenuator to reduce the signal level. For example, type f attenuator into eBay for attenuators with f-connectors that will fit onto your splitter.
I'm not sure what level you might need. A variable one will allow adjustment.
If the wideband aerial, which isn't as effective for Crystal Palace as on higher channels, is providing too high a signal level, then there is no real need to replace it with a Group A aerial.
With digital reception there is a lower threshold over which the signal level must be in order to show a picture (assuming good quality signal). Increasing the level doesn't make the picture quality better. For this reason, don't try to get the strength as near 100% as possible.
There is also a top threshold for the level over which it is likely to over whelm the tuner. This can produce what you've described: the signal level and quality dropping sometimes jumping up and down.
The point is that once you've got a signal that is too high, the quality is likely to go. It is a bit like turning the sound up on a hifi above that which the speakers can work at; the sound becomes hideously distorted (poor quality sound).
Of course there are slight variations that occur such as due to the weather and you don't want them to push it OTT, as perhaps could have happened with BBC this morning.
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Dave: Ok I follow now. I was worried the Attenuator wouldn't help having seen poor signal/quality for BBC this morning.
I have a variable 0-20db attenuator ready to go. Fitting is easy, but How do I go about tuning and choosing the right attenuation? Should I start at -20db, do a tune and see what I get?
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BillNick's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
Also some do and do not allow DC power pass....does this affect my choice of attenuator?
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BillNick's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
BillNick: The window is big so it's not critical.
Signal strength scales vary by receiver, but say you get a good signal with it set to 75% strength on the channels you have, then try manually adding the missing ones.
Once you have each one tuned, then don't rescan if you find one poor quality as the issue must lie elsewhere.
DC power-pass is required where an amplifier (mast-head amp) is being used at the aerial where the power supply is fitted behind the TV set. The DC voltage to supply the amp is carried up the aerial cable and thus if the attenuator were fitted inbetween the two, it would need to be the power-pass variety.
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Wednesday, 26 December 2012
N
Nick R9:06 AM
Until about a week and a half ago, my Freeview signal in South Harrow, North-West London was 100% on all channels - without the need for amplification. Since then I have experienced mild pixellation on some ITV channels, followed by total loss of all ITV channels, leaving only highly pixellated Freeview "Lite" i.e. BBC only accompanied by audio loss. Done the usual checks on cabling. connections and "Factory resets" on TV set without improvement.No known sources of signal interference or line-of-sight obstructions. So suspect engineering work is ongoing.
This is really to much - to lose all programming over Xmas and without notice and for the second time in the year.
Nick
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Nick R: There is no engineering work going on. Even when there is, it is stopped for Xmas.
As you mentioned "100%" you should look at Freeview signals: too much of a good thing is bad for you | ukfree.tv - 10 years of independent, free digital TV advice .
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Friday, 4 January 2013
A
Alex11:50 AM
London
Hello
I live in Borough/London Bridge. A few days ago we suddenly lost the channels in Multiplex 2 and A (ITV C4 E4 etc). I have tried to rescan and reset the freview but now it won't even find the channels. I have spoken to neighbours and they are having a similar issue.
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Alex's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
Alex: Your postcode resolves to a block of flats which makes me think that there might be a communal aerial system. Thus, you and your neighbours who have the same issue have something in common: the aerial system.
This tends to point to some issue with it so this will need reporting to whoever is responsible for it (e.g. the landlord).
Try a manual tune on UHF channel 26 for Mux 2. Having brought up the manual tune screen and entered/selected 26, prior to pressing the button to scan (might be "OK"), observe whether there is any indication of strength and quality.
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Thursday, 10 January 2013
S
Steve Flynn1:28 PM
Haslemere
Lost BBC from Crystal Palace.
I have recently lost BBC channels on channel 23 from Crystal Palace. HD on ch 30 also weak however ITV channels from the same transmitter on ch 26 are excellent so the aerial system is clearly working.
I have two aerials pointing at Hannington and Crystal Palace diplexed then fed into an old Labgear distribution amp together with an FM aerial signal. Hannington signals are fine. I want the London BBC channels for local news.
Any idea why only the BBC signals are affected? There aren't any engineering works listed so I am baffled. Could it be the distribution amp?
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Steve's: mapS's Freeview map terrainS's terrain plot wavesS's frequency data S's Freeview Detailed Coverage
Wednesday, 23 January 2013
M
martyh9:19 PM
Aldershot
JB38* If I can get Freeview in Ash Vale, does this mean I can get the HD signals as well. I am thinking of upgrading my tv to one with a Freeview HD tuner. Thanks, martyh
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martyh's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
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