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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Sunday, 6 May 2012
H
hunny11:22 AM
London
Mark Fletcher: Yes, I have tried everything including the coathanger, using antena attenuator to reduce the signal, used the cheapest aerial bought, but still scrambled. the retune I did was also following the freeview procedures, unplug the main power and the aerial cable, etc. etc. I'm really puzzled with whats going wrong now.
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hunny's: mapH's Freeview map terrainH's terrain plot wavesH's frequency data H's Freeview Detailed Coverage
B
Big Mart6:12 PM
jb38: Just to say that I am away for the weekend so obviously cannot do any tests. Hopefully I will be able to try on Tuesday.
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J
jb386:58 PM
Big Mart: No problem, and will look out for your next update Tuesday onwards.
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Tuesday, 8 May 2012
B
Big Mart4:54 PM
London
jb38: Been searching around and found an old indoor aerial. Would you believe I used it to connect an old BBC B computer for teletext !!! Plugged that in, and no reception on any channels. I also found an old aerial lead, but it is male / female, whereas I need male / male.
Finally I tried a coat hanger (wire!). No reception on any station. The only thing I haven't tried is a piece of wire (not sure I have any that is not connected to something ... but I am dubious that would work).
I think I should just give up wanting to record off the HD channels and stick to SD. I can view HD with the tv and the recorder off.
Thank you, and others for your help.
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Big's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
T
Tony7:26 PM
Chelmsford
jb38: Sorry. I should have mentioned that I live in Chelmsford, CM1 6SS. Thank you for your comments.
I have a Horizon HDTM meter and it is showing a signal increase of about 3db (from ~27db to ~30db. I had been expecting a greater increase than that.
I have a 0-20db attenuator built into my system. Do you have an optimal db value in mind?
Thanks in advance. I'll get back to you to report my findings.
Tony
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Tony's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
T
Tony10:31 PM
jb38: I tried attenuating my input signal and the HD channels immediately froze and came back when I reduced the attenuation to zero.
Am I right in thinking that the signal is not overloading? Maybe I need a better aerial for HD?
I have had my current setup for over three years.
Tony
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J
jb3811:47 PM
Tony: If your meter is HT-DM Plus then that wont respond to DVB-T2 signals, so its a bit strange why you see anything being indicated.
You are located at 34 miles away from Crystal Palace and 21 miles away from Sudbury, and although its about 40 degrees out from the rear pick up of your aerial it would be interesting to know the result if you tried a manual tune test on Sudburys HD transmitter, this operating on mux Ch47.
A little point I did wonder about though was, that when you had originally reported that the SD quality was indicated as about 100% or so, what was the signal strength seen associated with that quality? as sometimes if a signal being received is of a very stable nature then the actual strength of the signal can be quite low, and should this be applicable in your case then it might be on the verges of being too low for reliable HD reception, just like a signal on the opposite end of the scale (excessively high) will always cause problems on HD before SD, so strengths as well as quality has to be known.
What you have mentioned about you aerial might well apply, but the only real way for anyone to verify if their aerial system can be excluded from being the cause of a problem is by trying another TV on it, as PC card tuners and indications obtained from same tend to be a bit non-standard and therefore the readings obtained cannot be used for assessment purposes in exactly the same way as done with normal TV or boxes tuners.
If you have the type / model of tuner card fitted in the WMC maybe you could give an update on this.
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Wednesday, 9 May 2012
J
jb3812:07 AM
Big Mart; Well you have just about exhausted about every possible test that there is to try, although should the chance ever arise for you to try your DVD recorder out on someone else's aerial system I would love to know the outcome of the test, as I feel that your HD problem is caused by either your recorder malfunctioning when on HD, or that that the quality of the signal is defective as far as HD is concerned before reaches your flat, as it has to be one of the two.
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E
Edward Horne10:01 AM
Braintree
CM7 1XT
I have a Humax 9200T, as of the 8th the picture is breaking up,
The signal detection before this date was a strength of 95% and quality of 80%.
These figure are now, strength 92% and fluctuating +2%, quality 40% and jumping randomly to 50, 60 100%.
As I say before the 8th and since tuning since the changeover everything has been fine.
Any suggestion?
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Edward's: mapE's Freeview map terrainE's terrain plot wavesE's frequency data E's Freeview Detailed Coverage
B
Big Mart6:11 PM
London
jb38: I actually own a house in Portsmouth, which I maybe visiting over the weekend. I usually leave the recorder in London so that it can record programmes if I am out.
If I took the recorder down with me; it would presumably need to be retuned for the local transmitter. Would all the programmes that are saved on the recorder remain, and would any new programmes recorded down there, be viewable without problem in London.
The tv down there doesn't have HD, but I presume that is not a problem.
However with all the setting up there, and re-setting back here, I wonder if it is worth it ?!
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Big's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
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