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 11/11/2024 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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Monday, 24 May 2021
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Chris.SE10:47 PM
Rob Stamp:
I can now view your post normally. No further comment to add without feedback from yourself.
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Sunday, 20 June 2021
A
Anthony Denyer7:47 AM
Berkhamsted
what has happened to com 7? I used to be able to get it although it sometimes dropped out, but now it has gone. I live in Berkhamsted (HP4 2JG). Is it likely to return? Thank you
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Anthony's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
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Chris.SE4:19 PM
Anthony Denyer:
It hasn't gone anywhere, it's still transmitting. When did you lose it?
Are you missing any other channels other than those on COM7?
See Channel listings for Industry Professionals | Freeview for which channels are carried on which multiplex.
If perchance you retuned when the signal was absent or had bad pixelation, then this would likely just clear the correct tuning. This could have happened if there was Planned Engineering or on occasion recently there's been some variable Tropospheric Ducting with the high pressure which would have periodically caused interference from more distant transmitters.
You might also get interference if you have any HDMI cables close to poorly screened aerial cables or flyleads which aren't double screened types. C55 seems to be especially vulnerable in many cases. Make sure such leads are well separated.
Try a manual tune on UHF C55. COM7 reception in your road is predicted to be more reliable in the higher numbers - from Crystal Palace.
Which way is your aerial pointing? Are the rods (or squashed Xs) horizontal? It should be pointing at a bearing of 136 degrees (SSE). Check it's still pointing the correct way and it and the downlead look undamaged.
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Chris.SE: Frreview 77 is noit in COM 7 - it seems to be on channel 25m whatever multipolex that is - and avaailable to 3am suggesting its one of those holding pattern channels designed to stop someone else muscling in.
I am not prepared to check it at 3 am - but I am prepared to inform Chris that all my COM 7 reception has currenlty ceased - due to leaves trees by the look of it.
I will recheck my COM 7 in October when the leaves start falling.
I've invested in different aerials over the last 5 years to try to get over this issue.
Why can't Arqiva invest in a proper multiplex for BBC Four HD, BBC News HD and PBS America +1?
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Chris.SE11:46 PM
David Warner:
I don't know which list you looked at to give you the impression that LCN77 was on COM7, the Freeview page shows it on the SDN multiplex, the programme (TCC) on that multiplex is on UHF C25 at Crystal Palace (as also listed above).
Like several channels on some of the COM muxes, according to my data source, this one timeshares with LCN80 Blaze+1 at 0200 for an hour (despite what the EPG says!) it's stated on the caption on its page and then with LCN63 Blaze at 0500 through to 0200. Don't ask me why Blaze does it that way, I don't know!
I'm sorry you still have problems with COM7 in the summer due to those trees in your line-of-site.
It's not simply a case of Arqiva investing in a "proper" multiplex, don't forget that we are limited by International and European agreements on the frequencies and power that can be used, but in any event, I'm certain that BBC4 HD, BBC News HD, PBS America & others would not be prepared to pay for another multiplex.
As I'm sure you recall, we had COM8 which closed because it became uneconomic, due to uncertainty in 2020 about advertising revenue for the other channels and the duration of the OFCOM Licence. The licence for the temporary multiplexes COMs 7&8 says they'd close by June 2022 at the latest, or on 3 months notice to use these frequencies for SDL usage by whichever MNO bought the frequencies in the 700MHz auction. As recently announced that's EE, so we await to see how long it will be before they have suitable cell equipment ready to use.
As you may recall from your previous posts, not all data on these web-pages has been updated with the 700MHz Clearance changes, here it's the Local mux which is now on C35 (not 29).
A reminder for all, in the multiplex order BBCA/PSB1, D3&4/PSB2, BBCB HD/PSB3, SDN/COM4, ArqA/COM5, ArqB/COM6, COM7, Local multiplex, the UHF channels for Crystal Palace are as follows
C23, C26, C30, C25, C22, C28, C55, C35 (London Local mux).
In case your signals aren't the strongest, it's worth trying a manual tune (if your device allows it) on C55 &/or C35. Autotune sometimes misses weaker signals.
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Monday, 21 June 2021
D
David C Warner12:10 PM
Chris.SE: I wish they'd get on and close COM7 and then make alternative arrangements for the proper HD channels.
At the moment half the country can't get COM7 stations because they are on relays not carrying COM7
How about some so-called levelling up for Freeview viewrs?
Meanwhile they could re-capture some bandwidth by getting rid of the neo Nazoi channels - RT and GB Mres, and also the porn that someone somewhare presumably patys Dirty Desmoind to transmit to them.on COIM5 and 6.
To think Arqiva was once Post Office Telecommunications. Mrs Whitehouse would have had them in court in no time.
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Chris.SE1:50 PM
David C Warner:
If they were to close COM7 now, we'd just lose those channels. IF as speculation thinks, they convert one (at least) of the existing multiplexes to T2, it will take time for that to be done around the country BUT that may not happen, as you know there is a move towards more streaming stuff and suggestions are that we'll be linked to a stream for channels we can't get over air, whether that be due to faults, engineering or whatever, we'll have to wait and see. There have been no announcements either way.
I'm waiting to see what happens on Freeview (if anything) for the extra Red Button channels for Wimbledon that have appeared on Satellite. Rumours were they'd also be added to Freeview but there is no space unless they are just links to streaming (or they reopen COM8 for the duration, ha ha!), whatever no announcements yet, I've also been checking muxes to see if anything appears.
Arqiva are a commercial organisation (like any business) and have to be able to pay staff and the bills etc. so they have to have broadcasters willing to pay for space on the multiplexes, and maybe also will to pay any additional costs (if any) for T2! All channels/broadcasters also have to have a licence from OFCOM and are regulated by them.
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David C Warner9:32 PM
Chris.SE: Thanks. I do hav e a Roku stick - I ought to do an AB vs Freeview ch9 to see if it's more like HD.
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Saturday, 26 June 2021
T
Tony Life8:34 PM
Hi. It seems that Crystal Palace has moved the BBC HD multiplex BBCB from UHF channel 48 to channel 30.
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Sunday, 27 June 2021
C
Chris.SE1:01 AM
Tony Life:
It never was on C48 I'm afraid, and the Local mux is on C35. As has been mentioned a few times around this site, see towards the end of my last comment about this on p313 here Crystal Palace (Greater London, England) Full Freeview transmitter | free and easy unfortunately the site owner has not had the time to do all the updates from the 700MHz Clearance program or correct some errors that appear.
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