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.
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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 TV region BBC London LondonWhich companies have run the Channel 3 services in the Crystal Palace transmitter area
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Friday, 19 August 2011
M
Matt10:17 PM
Often expensive freeview boxes can have worse tuners than expensive ones. The other thing is, as Brian says, to use proper quality flyleads otherwise radiated interference from the TV ot near sources can ruin a signal especially is the S/N ratio is not too great.
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Saturday, 20 August 2011
J
jb388:49 AM
Brian King: As has been said by Briantist / Matt, some devices are more sensitive than others, but an easy way to even this out, albeit on a temporary basis, is to use a simple booster in line with the least sensitive device, as this will lift the signal to just above the level that is causing you the problem.
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B
Brian King10:31 PM
London
So, the Sony TV (latest model) is less sensitive than the tuner inside a Sony DVR from about 5 years ago? Seems odd. I'm sure the flyleads are good quality. I'm checking with the others in the house (we share an antenna)and there have been reports of poor reception lately, often ascribed to the weather.
Is it a definite, that the power will be increased when analogue is switched off?
Brian
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Brian's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
Sunday, 21 August 2011
J
Joanna Tate10:29 AM
London
My aerial is in the loft and I have noticed that over the past 3 Saturdays at about the same time 10.30-11.00pm there is severe pixelation on all channels. Re-tuning does not help. I am on the Crystal Palace transmitter and I see that they are doing engineering work but would this be done at the same time every week?
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Joanna's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
K
KMJ,Derby7:52 PM
Brian King: The power of each mux is raised to 200kW at DSO. At present the HD service is only 10kW and the other muxes are 20kW.
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K
KMJ,Derby8:10 PM
Joanna Tate: It is likely that you are receiving interference from faulty equipment that is turned on at that time. Does this only happen on Saturdays, or is there any problem on other days at that or any other regular time? A central heating boiler coming on (to give hot water for a bath) or a security light that is in use for that half hour are two possibilities.
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Monday, 22 August 2011
B
Brian9:53 AM
JB38 and KMJ, many thanks for that. I may well get hold of a cheap booster to use until the DSO in April. If my (creaky, from 50 yrs ago...) maths is right, the increase in power at DSO amounts to 10dB. Right?
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Brian: Yes, see "Comparison of analogue and digital signal levels" - pre-DSO is -17dB post-DSO is -7dB compared to analogue levels, that's 10dB.
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Tuesday, 23 August 2011
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 20:09 on 20 Aug to 20:48 on 20 Aug [BBC]
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CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 20:09 on 20 Aug to 20:48 on 20 Aug [BBC]
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