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 18/11/2024 Screen may go black 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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Sunday, 19 August 2012
M
Mark Fletcher12:00 AM
Lytham St. Annes
JB38.Not particularly aware of the postcode reception predictor being faulty last night,but i was certainly aware of gremlins elsewhere on this site as i was unable to respond to any texters yesterday as well as unable to click on any other link without the associated gobbledegook cropping up.
It appears that the postcode predictor on this site is functioning again as i am staying in Barnsley this week and hopefully by typing in the postcode of my recent holiday in St Annes (end of June 2012),Lytham St Annes crops up instead it for now (postcode predictor) should be working normally once again,fingers crossed !
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Mark's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
J
jb3812:28 AM
Mark Fletcher: Thanks Mark, yes I also noticed a few odd things cropping up yesterday, but I would be obliged if you could try a test by clicking on the "Digital UK tradeview" link at the right hand side of your posting, as I have just tried it and DUK states "Error - we seem to be having difficulties etc".
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M
Mark Fletcher1:54 AM
Barnsley
JB38:Just typed in your request and exactly the same scenario here,"Error we seem to be having difficulties" even typed in the postcode and house number same "Error" message displayed !
So there are some technical difficulties still ongoing as i text !
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Mark's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
J
jb387:22 AM
Mark Fletcher: Thanks for your confirmation on that, as when I didn't seen the problem being referred anywhere else I was starting to get a bit concerned in case the problem was at my end, and so when I noticed that you were on I thought I would take my chance and enquire.
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M
Michael11:49 AM
London
My digibox and HD recorder are still messing around. Tne Toshiba HD recorder retuned itself to a different transmitter this morning.
Main development: I took the digibox to my father's house half a mile away, where reception used to be worse pre-switchover, and where he used a loft aerial. Sure enough, signal strength on the digibox was about 49%. but signal quality was rock solid at 98%, pretty consistently over the muxes. I checked by phone that the HD recorder was still playing up at home at the same time.
This contrasts with the same digibox at out house showing signal strength of 85-90% and signal quality varying (and I mean varying, as you watch it) of 70-85% on UHF Ch 23 and 26 and 45-65% on the others. The corresponding readings on the HD recorder are 70-75% strength and 48-63% and 25-60% quality. These readings are for when there is a problem. When there isn't (typically in the afternoons) quality is consistent at around 75 or 70%.
So, it's not the digibox (or presumably the recorder) gone wrong. It is the signal quality, or the variation in the signal quality. The digital TV can cope with this but the digibox and recorder cannot.
I intend to do the same test next door when the neighbours are back, which should indicate whether it is the signal coming into the aerial or something between aerial and equipment. That "something" might be a powered signal splitter (and presumably amplifier) in the loft, given that could simply be amplifying errors, but the same setup has been working fine for years, and for several months post-switchover. And the signal strength reported by the HD recorder (and the digibox?) does not seem excessive on the face of it. I'm reluctant to mess around when I still think the incoming signal may be at fault, to the extent that the HD recorder thinks a dodgy signal from elsehwere is better. I have already had engineers round checking that the signal coming from the aerial is OK. They reported that it was fine at around 70% BUT when they came the setup seemed to be behaving I don't know for sure that they also looked at signal quality.
I was surprised that everything functioned with only 49% signal strength but I was even more surprised at the very high signal quality. What should I expect for quality? Should it work on a nice consistent 70% quality, say?
I have a horrible feeling that the answer to this one is "it depends", but would my Toshiba recorder base its retuning decision on strength, quality or a mixture of both?
Annoyingly, none of the televisions we have appear to indicate strength and quality separately, simply giving an overall measure.
The only other possibility I can think of which is unrelated to what is emerging from Crystal Palace, is the Shard. I dismissed this in my mind as the building was essentially there for some time before its opening a few weeks back, but is it possible that some cladding was added late in the day? I know that a small area of Ponders End had issues with Canary Wharf, for example, so a very localised effect is not impossible.
| link to this comment |
Michael's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
J
jb3812:35 PM
Mark Fletcher / Dave Lindsay: Just tested out DUK's post code reception checker and pleased to be able to say that the problem appears to have been rectified.
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jb38: Thanks for posting about DUK Postcode Checker working now. I tried it an hour or so back and it was still off. It is now working for me.
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M
Mark Fletcher1:51 PM
Barnsley
JB38:Just clicked the digital UK tradeview link to the side of my last text and now working normally again !
| link to this comment |
Mark's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
J
jb384:49 PM
Dave Lindsay / Mark Fletcher: Yes thanks, and long may it continue to do so, as it's an essential aid into providing assistance to anyone with problems of a reception nature, as without it anyone providing assistance is (up to a point anyway!) just about as much in the dark as the person seeking help, and in many cases with that even applying when the person seeking assistance has provided non-post code info on their location.
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Monday, 20 August 2012
M
Michael11:13 AM
London
Michael: To add to my last night's post, I found the HD recorder getting BBC1 etc off 698K this morning. After wiping all chanells as usual, for a change I let it do an auto retune. I found that while it did pick up Ch23 successfully it then went on to pick up the same mux on other UHF channels, evidently overwriting the Ch23-generated ones (i e not storing them as 801+). This was despite the Crystal Palace signal being stronger and of higher quality than the alternatives. However, it does dispose of the theory that Crystal Palace must somehow be next to non-existent at 8am. Hard to know why the HD recorder is doing this. But if the signal as received by the tuner was as it was six weeks ago, presumably it would not be!
| link to this comment |
Michael's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
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