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Full Freeview on the Crystal Palace (Greater London, England) transmitter

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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 2 Dec 12:01 until 2 Dec 19:05. . FM: Slightly reduced power due to a fault from 2 Dec 12:01 until 2 Dec 19:05. . BBC


Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name
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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.

MuxH/VFrequencyHeightModeWatts
PSB1
BBCA
 H max
C23 (490.0MHz)324mDTG-3200,000W
Channel icons
1 BBC One (SD) London, 2 BBC Two England, 9 BBC Four, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 250 BBC Red Button, plus 15 others

PSB2
D3+4
 H max
C26 (514.0MHz)324mDTG-3200,000W
Channel icons
3 ITV (SD) (London), 4 Channel 4 (SD) London ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 London ads, 18 More4, 25 ITV4, 29 E4 +1, 34 ITV +1 (London),

PSB3
BBCB
 H max
C48- (689.8MHz)324mDTG-6200,000W
Channel icons
72 Shopping Quarter , 101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV HD (ITV London), 104 Channel 4 HD London ads, 105 Channel 5 HD, 204 CBBC HD, plus 1 others

COM4
SDN
 H max
C25 (506.0MHz)314mDTG-8200,000W
Channel icons
 CCXTV, 12 Quest, 20 Drama, 21 5USA, 28 ITV2 +1, 31 5STAR, 32 Paramount Network, 41 GREAT! movies action, 45 Channel 5 +1, 55 5SELECT, 57 ITVBe +1, 58 ITV3 +1, 59 ITV4 +1, 63 Blaze, 66 CBS Reality, 68 Horror Channel, 73 Drama +1, 77 TCC, 80 Blaze +1, 203 CITV, 211 Ketchup TV, 212 YAAAS!, plus 15 others

COM5
ArqA
 H max
C22 (482.0MHz)321mDTG-8200,000W
Channel icons
11 Sky Arts, 17 Really, 19 Dave, 30 4Music, 35 pick, 39 Quest Red, 42 Food Network, 46 Film4 +1, 47 Challenge, 48 4seven, 56 Smithsonian Channel, 69 Quest +1, 74 Yesterday +1, 82 Together TV, 233 Sky News, plus 9 others

COM6
ArqB
 H max
C28- (529.8MHz)321mDTG-8200,000W
Channel icons
23 Dave ja vu, 26 Yesterday, 33 GREAT! movies, 38 DMAX, 40 CBS Justice, 43 HGTV, 67 CBS Drama, 81 Talking Pictures TV, 84 PBS America, 234 RT, 235 Aljazeera English, plus 18 others

LW
 H -10dB
C29 (538.0MHz)324mDTG-1220,000W
Channel icons
from 31st March 2014: 8 LONDON LIVE,

com7
 H -6.7dB
C55 (746.0MHz)324mDTG-643,100W
Channel icons
 Together TV +1,  Merit, 64 FreeSports, 70 Quest Red +1, 76 Now 70s, 86 More4 +1, 87 PBS America +1, 89 Court TV, 96 Forces TV, 106 BBC Four HD, 107 BBC News HD, 113 RT HD, 114 Quest HD, 205 CBeebies HD, plus 2 others

DTG-3 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
DTG-8 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?

regional news image
BBC London 4.9m homes 18.4%
from London W1A 1AA, 11km north-northwest (334°)
to BBC London region - 55 masts.
regional news image
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 AthleticTransposerRedeveloped north stand Charlton Athletic Football Club130 homes
DeptfordTransposersouth-east London100 homes
GreenfordTransposer12 km N Heathrow Airport203 homes
HendonTransposerGraham Park estate50 homes
White CityTransposer9 km W central London80 homes

How will the Crystal Palace (Greater London, England) transmission frequencies change over time?

1950s-80s1984-971997-981998-20122012-1321 Mar 2018
VHFA K TA K TA K TA K TW T
C1BBCtvwaves
C22ArqAArqA
C23ITVwavesITVwavesITVwavesBBCABBCA
C25SDNSDN
C26BBC1wavesBBC1wavesBBC1wavesD3+4D3+4
C28-ArqBArqB
C29LW
C30C4wavesC4wavesC4waves-BBCB
C33BBC2wavesBBC2wavesBBC2wavescom7
C35com8
C48BBCB
C55tv_offcom7tv_off
C56tv_offCOM8tv_off

tv_off Being removed from Freeview (for 5G use) after November 2020 - 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

Which companies have run the Channel 3 services in the Crystal Palace transmitter area

Sep 1955-Jul 1968Associated-Rediffusion†
Sep 1955-Jul 1968Associated TeleVision◊
Jul 1968-Dec 1992Thames†
Jul 1968-Feb 2004London Weekend Television♦
Jan 1993-Feb 2004Carlton†
Feb 2004-Dec 2014ITV plc†
Feb 2004-Dec 2014ITV plc♦
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV Daybreak•
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Crystal Palace was not an original Channel 3 VHF 405-line mast: the historical information shown is the details of the company responsible for the transmitter when it began transmitting Channel 3.

Comments
Monday, 16 April 2018
P
paul Wood
1:12 PM

Any chance of the sight being updated for the recent changes?

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paul Wood's 2 posts GB
Monday, 23 April 2018
C
Chris Roberts
1:36 PM

What has happened to Al Jazeera HD & BBC News HD and others that used Channels 32 (Hannington) and 33 (Crystal Palace)? (We can receive from both transmitters)
Since last Wednesday (18th April) we cannot get them on any Channel - not even 55, which I understand is the new Channel. Is Channel 55 transmitting? We can receive Channel 56 OK - Forces TV, Free Sports etc. So it is not aerial dependent. Have scanned every channel from 21 to 68 and there is no evidence of these programmes. What is the Channel for Al Jazeera & BBC News HD etc?

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Chris Roberts's 14 posts GB
S
StevensOnln1
sentiment_very_satisfiedPlatinum

2:07 PM

Chris Roberts: Those channels are on COM7 which moved to UHF channel 55 last week at Hannington. Have you checked for any loose or damaged cables or connections behind your TV? Please provide a full postcode so that we can see your predicted coverage.

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StevensOnln1's 3,203 posts GB
S
Steve
2:35 PM
Reading

Same here: (RG10 9TS): Since last Wednesday (18th April 2018) we cannot get Channel 55 channels such as BBC News HD again: CH 55: Signal strength 8/10, signal quality 0/10. We can receive Channel 56 OK, still - e.g. BBC 4 HD. (With a new Wideband aerial + Loft amplifier installed on April 9th 2018 both Channel 55 and Channel 56 were fine (after the earlier March 21st re-tune) but only) until April 18th when we lost CH55 (yet kept CH 56)!

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Steve's 2 posts GB
C
Colin R
8:50 PM

Steve & Chris Roberts: This may be co-channel interference if you can get both Hannington and Crystal Palace. The trouble with the 'subtle and cunning plan' of the transmitting authorities to put Com7 and Com8 on channels 55 and 56 everywhere is that, unless the signals are perfectly sychronised at all transmitters, then out of phase signals start to cancel each other out (completely at 180 degrees out of phase).

So it may be that the two transmissions of the Com7 mux on channel 55 at Crystal Palace and Hannington may be, by coincidence, quite out of phase, and hence the interference is causing signal quality 0, but the two Com8 mux transmissions on channel 56, may be by coincidence, in phase, and hence you can receive it.

I am in Weybridge, and although I am much closer to CP than Hannington, ever since 18 April, I am now getting intermittent pixellation on channel 55 mux channels such as BBC News HD, because of interference from Hannington off the back of my shiny new (since the March CP channel changes put paid to my old group A aerial) wideband aerial.

This is what comes of letting Baldrick design a channel strategy that breaks all of the cardinal principals that have governed UHF transmitter channel grouping and mapping for fifty years!

Or more's to the point, rather than a tongue-in-cheek reference to Blackadder, this is in fact what happens when the government goes for a dash for cash from selling off first the 800Mhz TV band for 4G mobile data, and now hastily preparing for selling off the 700MHz TV band for 5G mobile data! All the old channel and aerial groupings that were designed to prevent just this sort of interference seem to have been thrown out of the window.

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Colin R's 8 posts GB
C
Colin R
11:10 PM

Colin R: In my previous post I didn't make suggestions for fixing the problem. Well, short of writing to Ofcom and your MP to complain, you might try:
a) experimenting with different levels of gain on the amplifier, if your amplifier has variable gain, and if not, trying an alternative variable gain amplifier. Turning down the gain may just reduce the unwanted weaker signal to a level that lets your TV or PVR receiver resolve the stronger signal without interference and lock on.
b) experimenting with rotating the aerial by up to about fifteen degrees either way, possibly combined with a higher amplifier gain. This will reduce the main signal, assuming that the aerial is currently perfectly pointing at your preferred transmitter, but hopefull not so much as to make it too weak for the receiver, particularly with a bit more amplification. Crucially though, it may move the other transmitter into a a low gain or null lobe of the aerial's reception polar plot, thus significantly reducing or eliminating that other unwanted signal.
c) experimenting with pointing the aerial at the other transmitter, e.g. if currently pointing at Crystal Palace then point it at Hannington instead, and vice-versa, possibly also combined with a) and b) above.
d) if your aerial is in the loft, try it outside, combined with a), b) or c) above if necessary.

A useful gadget when doing the above if your budget stretches to about 35 quid is a Sathero or equivalent digital terrestial finder. These are more expensive than other so-called signal finders, but the advantage is that it will show the signal strength and quality on each channel separately, whereas the cheaper models just show, or claim to show, overall signal strength across all channels.

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Colin R's 8 posts GB
Tuesday, 24 April 2018
NICKADSLUK
sentiment_satisfiedBronze

12:24 AM

Colin R: well stated Colin
I'm going to wait for a while as I get 10 across the board for quality in crawley where I live on a group a aerial on CP and I don't fancy getting a wideband to muck up what's already perfect just for a few HD channels missing

I use the sat dish for BBC4 HD etc and that works a treat. however its still a hassle in going from terrestrial to free sat on the latest Samsung TV as you have 2 remotes and only one of them will allow to get to that menu for changing over

whoever come up with this changing of channels hadn't really a clue because if you had to remove some channels no problem but any one with common sense would not have removed the HD channels where they are likely to not to work for the majority without additional expense

Remove them all if you must but to remove just a few and leave a few that makes no sense at all

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NICKADSLUK's 38 posts GB
C
Colin R
3:05 AM

NICKADSLUK: I agree with you about the hassle of switching between Freeview and Freesat.

Unfortunately those of us with both Freeview and Freesat receivers, e.g. many recent model TVs, and group A aerials for Crystal Palace, suffered a double whammy this year when firstly Channel 4 removed Channel 4 HD from Freesat, and then just a month later, the Com7 and Com8 at CP moved to channels 55 and 56.

This means that either you have to keep switching between Freesat for e.g. BBC News HD, and Freeview for e.g. Channel 4 HD, or you have to shell out hard-earned cash to get a wideband aerial, because Freeview won't give you a free wideband aerial if you have satellite capability - perhaps a triple whammy!

Also, if you want to watch Channel 4 + 1 HD and 4seven HD then then the only option is a wideband aerial because these are not on group A channels any more, and nor are they on Freesat.

So the government might be raking in billions in licences for 5G, but it is 'taxing' some of the four and a half million people that are served by Crystal Palace who now have to shell out money for new wideband aerials, or put up with at least some channels lost, if they have both Freeview and Freesat.

Miffed of Weybridge!

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Colin R's 8 posts GB
C
Colin R
3:26 AM

Colin R: .... and then, just when you have forked out for a new wideband aerial and you think it is safe to go back into the kitchen (or wherever else your telly is)....

... you get co-channel interference because all the transmitters are being changed to broadcast Com7 and Com8 on the same channels 55 and 56! Aaarrgghhh!!

It's really is the final straw, isn't it?

Extremely miffed of Weybridge

Dear Philip Hammond MP........

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Colin R's 8 posts GB
C
Colin R
4:37 AM

Colin R: .... and sadly, no, it's not even the final straw. It has been said that channels 55 and 56 have been chosen for Com7 and Com8 because they will lie in a narrow gap of the 700Mhz band (743 - 757MHz) that won't be used for 5G, at least initially from 2020.

But that still means that frequencies from 700-740MHz and 760-800MHz will probably be used for 5G. If you happen to have a mobile antenna mast nearby your home, or on the line of sight to your TV transmitter (my nearest mast is 600 metres from my house at about 20 degrees off the line of sight) then your TV receiver is likely to be swamped by the strong adjacent 5G signals, thus losing reception of channels 55 and 56.

This is because TV terrestial receivers are actually designed to receive all of the 700MHz band (and the 800Mhz band as well up to channel 68 at 850MHz), and being consumer electronics, and not professional communications receivers costing thousands that have special band-pass and notch filters to filter out strong local transmissions on adjacent frequencies, the so-called automatic gain control in the receiver will probably desensitise it so much because of the relatively strong local 5G signals that TV channels 55 and 56, ususally broadcast with much lower power than the other multiplexes anyway, will no longer get through other than for people who live quite close to the TV transmitter.

So after all this hassle and wideband aerial cost, come 2020 many of us might find that we can't receive the Com7 and Com8 muxs after all, and our new aerial purchase only lasted to get us these channels for a couple more years!

It is also said, that by 2022 Com7 and Com8 might move again, presumably to lower channels / frequencies that are below the 700Mhz 5G and 800MHz 4G bands. This just leaves Baldrick to explain why they were ever moved to ch55 and 56 in the first place!

Does anyone get the feeling, like I do, that the government would like to sell off the entire UHF TV specturm to mobile data serivces sometime in the next ten or twenty years, and shut down terrestial TV altogether? All these recent less-than-user-friendly changes may be a way of 'encouraging' people to switch to satellite TV, or in due course to most TV being delivered by broadband Internet. It may be no coincidence that Ofcom recently set OpenReach and other broadband infrastructure providers a target of a minimum of 10Mb/s broadband to all homes, i.e. sufficient bandwidth to be able to watch any television channel of your choice. It may be feasible, and it may even be reasonable by then, but it would be nice if there was some open and honest communication of the strategy, if this is indeed the case.

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Colin R's 8 posts GB
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