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 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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Monday, 15 August 2011
D
damo11:20 PM
London
Had no signal at all now for a week, went down last tuesday, as i said before am serviced by crystal palace not had any issues before last week and co-insides with the work they say on this site they are carrying out. postcode nw61re, it cant be right that they would provide no signal for a week can it? its driving me mad as ariels leads everything all checked but just no signal for digital at all and a very poor almost unwatchable analogue signal, any ideas?
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damo's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Tuesday, 16 August 2011
B
Ben Hughes8:15 AM
Teddington
I live in Teddington, Middlesex. I have direct line of sight to teh Crystal alice transmitter. I am using a PC with Windows 7 Media Center for all m TV viewing/recording. My freeview reception is generally rock solid, but recently I have been seeing occasional picture breakup on BBC One HD and one or two other channels. I tried re-tuning, but this does not appear to have fixed the problem. I believe my areal and cable are good.
I notice that the BBC One HD Mux is on low power right now, is that likely to be the problem?
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Ben's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
M
Mike Dimmick3:48 PM
Ben Hughes: The pre-switchover HD service is on the same power level it has always been on.
In your area, you're expected to be practically certain of having reliable reception. Check that you aren't overloading anything. If you have a booster, remove it. You could also try adding an attenuator to reduce overall signal levels (you could well need one after switchover).
Also check for possible sources of impulse interference. Keep your phone well away from the PC and the cables. Check whether the breakup occurs when the central heating thermostat or controller switches on or off. If it does, a cable upgrade to satellite-grade cable may be worthwhile.
The broadcasters' definition of 'reliable' is 1% errors over time. Nothing is totally guaranteed. Still, it's more likely to be too much signal than too little.
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Mike Dimmick4:15 PM
damo: It is your equipment. I've been using Crystal Palace fine all week, and I'm much further away than you are.
If there are any boosters, check that the power supply is on and working properly. If you can, remove or bypass them, you shouldn't need one where you are.
Otherwise I suspect a broken cable or connection.
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Thursday, 18 August 2011
B
Brian King10:35 AM
London
Problem: serious picture break-up on ITV3 and others in MUX A, since changing from Sony DVD recorder (acting as digibox) and CRT TV, to Sony flatscreen (integral digibox)last week. Good ITV3 reception via DVD recorder to AV1 input on new TV, but then can't watch-ITV3-record-another. Aerial lead direct to TV, still v poor picture.
Roof antenna (Crystal Palace Tx) serving five flats via communal booster. If the signal is too weak for the TV, why is it OK via the DVD recorder?!
Brian
link to this comment |
Brian's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
Brian King: Can you please see Single frequency interference | ukfree.tv - independent free digital TV advice for some suggestions?
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B
Brian King5:48 PM
London
Yes, I've already looked at these - it doesn't seem like interference (isn't intermittent); only device attached is the DVR, and bypassing that (as I said previously) makes no odds. I've now added surge-preventing mains distribution, with no improvement. Another observation is that another ('portable' CRT Sony with cheap external digibox) TV in another room (same aerial system) receives ITV3 perfectly. Is the tuner in our new Sony flatscreen less sensitive than the one in the DVR or in the cheap digibox?
Brian
link to this comment |
Brian's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
Brian King: It could just be that the Sony is less sensitive than a Freeview box. If this is the case then the obvious answer is to get another cheap Freeview box until switchover.
It is probably worth checking you've got really good quality "fly leads" as these are often the source of problems.
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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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