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 - DAB: Slightly reduced power due to a fault from 23 Dec 07:21. . AM: Radio 4 on MW has now closed. Please retune to FM, Digital Radio, digital TV, BBC Sounds or smart speakers to continue listening. More information can be found on the front page of this 
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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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Saturday, 17 September 2011
Colin Wray
1:20 PM
1:20 PM
Briantist: OK, I accept the possibility that Sandy C31 is interfering with CP C31, but that does not account for the loss of Mux C & D. I do not have a Sandy aerial, but there is a weak signal from there on my CP aerial on C27 only. (CP and Sandy are 120 deg apart here, with Sandy masked by high ground).
I have now carried out a signal strength check on all channels 21-69, in three aerial setups: CP only, OX only, and both connected. There is absolutely no difference between these three cases. Here is the result:
C21=zero, C22=max, C24=zero, C25=max, C27=30%, C28=max, C29=zero, C31=zero, C32=max, C34=zero, C48=zero, C51=max, C52=max, C53=max, C67=zero, C68=max.
As you can see, I am missing Mux C, D, and BBCB. Can you suggest any reasons ? Many thanks.
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J
Janice Wilson4:53 PM
Welwyn
Following yesterday's post, I can confirm that we retuned Humax HD PVR today and have been able to find all 4 HD channels on C31, frequency 554000 (via CP) but these now appears as 800, 801, 802 and 803 not 50, 51, 52 and 53 as previously. The maximum signal strenth is 26% and quality 0%. So, while the Humax box can detect the programmes, we are still unable to view them. This is a big let down as we were happily watching brilliant HD transmissions up until 3 weeks ago.
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Janice's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
J
Jim F7:12 PM
Janice Wilson: Looks like you're suffering from Co-channel interference. CP transmits the HD programmes on UHF channel 31. The SDN MUX on Sandy Heath was moved to UHF channel 31 on 31st August (a temporary "parking channel"). Although SH is north of you, and your aerial is pointing south to CP, there's enough signal being received from SH to cause interference.
The bad news is that SH doesn't adopt its final channel for the SDN MUX until 9th May, which is after CP has undergone DSO (DSO1 is on 4th April, DSO2 on 18th April).
Digital UK's predictor suggests that you can't receive the HD MUX at all at present, through until 18th April. Reception of the HD MUX should be possible from SH, but that means realigning your aerial. Reception from SH is shown as good up until July next year; but reception from CP will ultimately be the best choice (after DSO2 there).
Tricky to decide what to do!
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Sunday, 18 September 2011
J
Janice Wilson10:15 AM
Welwyn
Jim F: Thanks for your feed back. I think you're right as I set the network search to 'On' and that's when we got the new HD programme settings. Unfortunately they have all disappeared again, so having paid for a Freeview HD top set box it looks as if we're not going to be able to use the elements we bought it for until the Crystal Palace DSO in April 2012. Just when all the good HD winter viewing comes onstream. Still the upside is we will be ready when DSO comes but no doubt the top set boxes will be a lot cheaper by then. The power of advertising!
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Janice's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
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Matt6:48 PM
My BER drops from around 50 to 10 when it rains. How is this possible?
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J
jb388:40 PM
Matt: It could be caused by a number of reasons, these ranging from water droplets getting into an aerial connection, obviously only applying if an outdoor type is used, to the signal being received having an element of obstruction attached to it, the reflective aspect of whatever changing when wet thereby causing a variation to the signal strength received.
Another reason concerns loft aerials being used under a roof clad in certain types of dense stone type slates, as water on them can reduce the strength / quality of a signal right down even although they are perfectly OK in dry weather.
Or of course you might be receiving the signal at some distance from a low powered transmitter, and rain droplets will have more of an effect on a signal in this type of situation.
But its very difficult to say, as you haven't mentioned anything about your location or aerial used.
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M
Matt9:25 PM
The aerial is a Televes DAT 75 (for my sins) with an antiference mast head amp mounted outside on a 10ft mast on a pair of wall brackets, with a total height of around 9 meters. The ITV mux is the one that is affected the most. It's just that normally when things get wet, they get worse, not better. The only thing I can make sense of is the fact a tree within sight of the aerial has different propagation characteristics when wet.
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Matt9:28 PM
Oh by the way, I mounted it. Initially, it was on Midhurst, hence wideband, but then I decided to move it over to CP to get mux C and D.
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Friday, 23 September 2011
G
Glen R3:12 PM
JB38
JB38: My post code is da12 1hp. Current aerial is set for Gravesend mast and has always had very poor reception in the 20 years the house has been in the family.
Similarly analogue reception for both bluebell hill and crystal palace in this time wasn't much cop either.
The cul de sac is in a bit of a dip, and my neighbours seem to experience similar problems. (51.4319,0.3746)
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