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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Wednesday, 8 July 2020
J
James Bevan6:50 AM
js: Appreciate the pointer, thanks - same result unfortunately now but yes previously this was a necessary step. I can only suppose the problem is lower down the stack as w_scan2 also reports the LCNs as null/zero, and it's the same for both tvheadend/w_scan2 on a different tuner type. No doubt my ignorance is a factor here, happy to take this thread offline if you're willing to pursue it as well?
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Monday, 13 July 2020
J
James Bevan7:34 AM
Potentially not just me then:
No LCN since freeview reshuffle | AVForums
Is there some technical body responsible for the broadcast I could take this up with?
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Thursday, 16 July 2020
I have done a retune again find Come 7/8 is back..... whats going on.... i wish i knew which transmitter its coming from as i have london via Crystal Palace and Meridian from Oxford transmitter
I am in Reading RG8 8DB you will see i an right on the edge on both transmitters
Rob
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Robert's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
C
Chris.SE7:02 AM
Robert Hellier:
According to the Freeview Detailed Coverage Checker you are 68km from Crystal Palace, 24km from Hannington, 36km from Oxford (and 64km from the quite low powered Reigate transmitter - no COM7). Those 3 main transmitters are horizontal polarisation whereas Reigate is vertical polarisation.
It will of course depend on which way your aerial is pointing (and what it is) as to what you are actually picking up off the main beam and maybe some side-lobes/rear of aerial. From you, bearings are as follows -
Crystal Palace is 94 degrees, that's fractionally S of due E, Hannington is 214 degrees, that's slightly S of SW, Oxford is 344 degrees, that's slightly N of NNW. (Reigate is 112 degrees, ~ESE).
Neither the Freeview Detailed Coverage Checker nor the BBC predictor show any reception from Oxford (presumably terrain, but that doesn't mean you won't get any signal!), other than that predicted reception of the 6 main muxes does vary slightly across your postcode, with overall Crystal Palace & Hannington being similar BUT no predicted reception of COM7 (C55) from Crystal Palace, but there is from Hannington which can be Good to Variable.
Note Hannington and Oxford supposedly transmit the same ITV Meridian Local news, whereas the BBC Local news should be Oxford from the Oxford transmitter and South Today from Hannington.
In the order PSBs1-3, COMs4-7, Local multiplexes, the UHF channels are as follows
Crystal Palace C23, C26, C30, C25, C22, C28, C55, C35 (London Local mux)
Hannington C45, C42, C39, C40, C43, C46, C55, C34 (Reading Local Mux)
Oxford C41, C44, C47, C29, C37, C31, C55, C22 (Oxford Local mux)
Oxford COM7 is lower power than Hannington. Crystal Palace being the highest (but no predicted reception!)
Note, Arqiva closed COM8 in June for Commercial reasons, see Rebuilding Freeview High Definition from 2019 onwards | free and easy
I'd think that you are most likely getting COM7 C55 from Hannington, but I repeat it depends on what your aerial is and which way it's pointing.
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C
Chris.SE7:13 AM
Robert Hellier:
Had meant to include a remark that reception can of course be affected by some weather conditions. There is predictions at the weekend for some quite strong "Tropospheric Ducting" (see Effect of tropospheric ducting on Freeview | RTIS and How does good weather affect my television? | RTIS ). It's not just reflections of signals, they can travel along what is like a tunnel in a layer of atmosphere.
So there could well be some disruption to reception coming up.
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Chris.SE7:18 AM
There is a slightly better explanation of Tropospheric Ducting at Tropospheric Ducting: Everything You Need to Know
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C
Chris.SE7:20 AM
The BBC used to post this image (I'll stop looking now!)
https://www.bbc.co.uk/rec….jpg
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Thursday, 30 July 2020
D
Dave10:29 PM
ucyrqsibbd: anyone got signal trouble in Great Yarmouth
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StevensOnln110:47 PM
Dave: You'd be better off posting on the Great Yarmouth page, as this is the page for the Crystal Palace transmitter in London.
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Monday, 3 August 2020
J
James Bevan7:12 AM
Harpenden
A followup on this - Crystal Palace (Greater London, England) Full Freeview transmitter | free and easy - the LCNs are back after a retune yesterday. FWIW I changed nothing in my setup, guess this one will just remain a mystery!
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James's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
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