Full Freeview on the Crystal Palace (Greater London, England) transmitter
Brian Butterworth first published this on - UK Free TV
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.
_______
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
|
|
Thursday, 14 April 2011
R
Richard8:16 PM
Stansted
Hi,
Can you help/advise please?
All freeview channels have beem missing from our two TV's since sometime on 13/04.
Aerial is on the roof.
I've tried the various resets and no better.
The Sony Freeview box indicates Average signal strength Poor signal quality.
Digital UK says we'll be on Crystal Palace and looking at the aerial position that looks correct to me.
Analogue signal is available but poor but then it always has been, or certainly for many years.
Any advice gratefully received.
Thanks
Richard
link to this comment |
Richard's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
Friday, 15 April 2011
B
brian12:55 PM
Thanks Brian(tist) !
I think I managed to figure it out for myself in the end. I would guess CP temporary digital aerials have a null to the east on D29 and D32 to prevent interference with the analogue(now closed) mast at Goes in Zeeland (the reason why CP analogue Channel 4 uses E30 not E29).
In addition I would guess that D32 is further reduced to prevent interference with the Faversham analogue relay.
The lay of the land near my house means that most people need roof aerials for CP (which is not the norm for most places close by) . Therefore I would guess as soon as the predictor believes there is less than a 100pc signal east of the mast it reduces the potential signal readings big time on D29 and D32.
Pity there does not seem to be anything published showing the radiation patterns. It must be a closely guarded secret !
link to this comment |
brian: Please see BBC FOI transmitter data - first draft | ukfree.tv - independent free digital TV advice for all known radiation patterns. The rest are a state secret.
link to this comment |
B
brian1:33 PM
cheers Brian, what an odd mix of transmitters. Bressay, Aberdare !
Nothing on CP , state secret as you say.
It took me ages to figure out my question. It was obvious really...
link to this comment |
brian: I have more post-switchover ones, but only for relays. The main transmitter patterns are all redacted.
I will, at some point, include these on the site. When I have time.
link to this comment |
B
brian4:31 PM
cheers Brian, very strange that they would be so cloak and dagger. You should get your MP to request the info under the FOI act (I don't know who mine is) !
link to this comment |
brian: MPs have no better access to the information via Freedom of Information than anyone else does. And I'm sure being leader of the Green Party is enough for her.
link to this comment |
B
brian5:22 PM
You should ask her about Whitehawk Hill changing it's region. That should stump her !
link to this comment |
Select more comments
Your comment please