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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Wednesday, 5 October 2011
Mark Heselden: Sorry, it is an annoying artefact that I will get rid of when the Channel 5 transmitter comes off air.
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ALL: I have fixed the "stripe problem" - see Removal of Channel 5 and B transmitter mapping artefacts | ukfree.tv - independent free digital TV advice .
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Monday, 10 October 2011
C
Confused9:41 AM
Aldershot
Hi,
I have been viewing freeview which was built into my TV. The siganl was not excellent but I received most channels.
Yesterday I brought a freeview recorder and now I am not able to view ITV1, Channel 4 or Channel 5.
Any advice would be greatly appreiciated.
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Confused's: mapC's Freeview map terrainC's terrain plot wavesC's frequency data C's Freeview Detailed Coverage
J
jb384:19 PM
Confused: To be perfectly honest, the reception possibilites on your particular code cannot by any means be classed as good, as there is a mixture of either variable or poor being indicated, the only ones that dont being ArqA / ArqB (Mux Ch34 & 29) from Crystal Palace, albeit still not sparkling!
I would suggest that you reset the recorder to blank out channels stored, then using manual tuning you should try entering Mux Ch22, that being ITV1 from Crystal Palace.
If this procedure captures it then use the "add (or find) channels" to regain any of the others that was previously received.
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M
Matt6:58 PM
JB38 - his prediction for crystal palace is a hell of a lot better than mine-I still get
perfect reception on all my tvs. Post DSO- it will be better. (50.9889,-1.4989)
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J
jb389:50 PM
Matt: Well, the difference I see is that out of the six multiplexes presently available from Crystal Palace both confused and yourself only has two of them in the green scale, the remainder under variable, confused's green being Mux Ch's 34 / 29, whereas in your case its Mux Ch's 32 / 34.
There is only two miles of a difference between you both, but with CP being at 67 degrees from confused, whereas its 49 degrees from yourself.
Predictors cannot really cater for local conditions, and so they give an approximation of what's expected.
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Tuesday, 11 October 2011
M
Mark Fletcher1:19 AM
Halifax
Mary of London.Difficult to say without a full postcode.First of all,Crystal Palace transmitter all mux's both at present and after DSO2 in April 2012,are within the group A aerial range (chs 21-37).The group W wideband aerial which you stated perched outside on the roof,is no use for Crystal Palace's group A frequency transmissions hence if the antenna itself is a new inferior contract wideband aerial there is a possibility that the lowest frequency you mentioned mux2 on ch22 is not being received at all.Or another possibility is mux2 on ch22 is broadcast on lower power,or a distant (but not far away region wise) relay maybe broadcasting either analogue or digital signals on ch22 causing single frequency interference as such.My best advice is to get rid of the wideband group W aerial,and replace it with a suitable but much superior Yagi 18A group A antenna with satellite grade black (preferred) or brown cable with brass co-ax plug.
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Mark's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Wednesday, 12 October 2011
M
Matt7:10 AM
jb38: The ostcode given is not correct. All of mine apre predicted to be variable with crystal palace. Mux 2 is only predicted to have 9 and 79 for reliability. ~It is still perfect.
(50.9889,-1.4989)
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M
Mike Dimmick9:18 AM
Matt: The numbers are the percentage of locations, within the 100m x 100m National Grid square that the centre of your postcode falls into, that are predicted to have (on average) sufficient signal margin to be reliable 99% of the time, and 50% of the time, respectively. It's a measure of the difficulty of locating an aerial within that square and how coverage might vary between you and your neighbour.
The prediction is based on an aerial with CAI Standard 1-class gain, and loss of 3-5 dB in the cable depending on frequency, but the template for cross-polar and front-to-back rejection is weaker than such an aerial would normally achieve. The prediction allows for losses if the signal path goes through a square made up mostly of woodland or of dense buildings but it only allows for average losses. They might be higher or lower than allowed for.
The prediction calculates both the signal from the wanted transmitter and the interference from unwanted transmitters, including adjacent-channel interference.
Short of actually going and surveying every grid square in the country, this is probably the best we can do, but it's always going to give 'wrong' answers for some people.
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M
Matt10:36 PM
Thanks a lot for that Mike Dimmick - you've cleared up a few things.
I found that moving one of my aerials on Guildford 10ft south (away from transmitter) meant that I could get mux 2 and B, whereas before, the meter did not even register anything. Digital UK predicts Mux 2 to be poor.
My neighbour is also predicted to have better forecast on every transmitter/multiplex. We both have a Unix 52A on Crystal Palace and Unix 52 C/D on Midhurst going through a A/E combiner into an SLX 8 way. I fitted both systems so that they were EXACTLY the same. It turns out my actual reception has and is much better than his.
Another problem here is low level multipath because of the metallic insulation used in houses nowadays. It is very good at reflecting signals, but that is another thing alltoghether. Co-channel is not a problem here at all.
I have a line of sight to all the transmitters except Crystal Palace, in which Newland's corner acts as the main obstruction - I still get perfect reception. A line of sight is not always necessary. I use a Horizon HD-TM meter.
However, I am not a professional, I just got into playing around with UHF DXing from my Ham Radio activities.
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