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

first published this on - UK Free TV
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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.

This transmitter has no current reported problems

The BBC and Digital UK report there are no faults or engineering work on the Crystal Palace (Greater London, England) transmitter.

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, 23 BBC Three, 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 1 (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, 26 ITV4, 30 E4 +1, 35 ITV1 +1 (London),

PSB3
BBCB
 H max
C30- (545.8MHz)324mDTG-6200,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV 1 HD (ITV London), 104 Channel 4 HD London ads, 105 Channel 5 HD, 106 BBC Four HD, 109 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

COM4
SDN
 H max
C25 (506.0MHz)314mDTG-8200,000W
Channel icons
12 Quest, 20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 41 Legend, 42 GREAT! movies action, 46 Channel 5 +1, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 74 Dave ja vu, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 203 CITV, 208 POP MAX, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 15 others

COM5
ArqA
 H max
C22 (482.0MHz)321mDTG-8200,000W
Channel icons
11 Sky Arts, 17 Really, 19 Dave, 31 E4 Extra, 36 pick, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 57 Smithsonian Channel, 60 Drama +1, 70 Quest +1, 75 Yesterday +1, 83 Together TV, 233 Sky News, plus 8 others

COM6
ArqB
 H max
C28- (529.8MHz)321mDTG-8200,000W
Channel icons
 FreeSports, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 88 Classic Hits, 235 Aljazeera English, plus 19 others

LW
 H -10dB
C35 (586.0MHz)324mDTG-1220,000W
Channel icons
from 31st March 2014: 8 LONDON LIVE,

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-BBCBBBCB
C33BBC2wavesBBC2wavesBBC2wavescom7
C35com8
C55tv_offcom7tv_off
C56tv_offCOM8tv_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

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
Thursday, 26 April 2012
S
Steve
2:28 PM

Kevin. I did wonder if it might need a tweak - but since it's attached to the top of the chimney, I will only try it as a last resort if other suggestions fail to cure problem. I think the aerial still "sees" CP as the prime transmitter because traditional channels (BBC1, 2, ITV1, CH4 & 5) are still all "London", so perhaps a retune will only juggle the other channels? Can but try it in May! Thanks again.

link to this comment
Steve's 10 posts EU
Friday, 27 April 2012
L
lesg
12:03 AM
Reading

I had BBCA mux channels breaking up this (Thursday)evening from about 20.10 for about half an hour (don't know the end time for sure as I switched over to BBCB during the period, as BBCA became unwatchable). All other muxes from Crystal Palace were fine. Anyone else have a problem at that time, or know why this could have happened please?

link to this comment
lesg's 6 posts GB
M
Mark Fletcher
sentiment_satisfiedGold

1:08 AM
Halifax

Michael Sainsbury,High Wycombe.No !

link to this comment
Mark Fletcher's 673 posts GB
N
NICK ADSL UK
sentiment_satisfiedBronze

9:31 AM

Crystal Palace was spot on yesterday 100% for quality and strength where i live.

Now considering the day before i got nothing and i was told everything their end was perfect it does make me wonder if they who ever they are have a clue on what their doing

link to this comment
NICK ADSL UK's 72 posts GB
N
Nick
1:49 PM

I have a PC based PVR which uses a Blackgold tuner card which has 2 x DVB-T2 tuners. I receive my signal fro Crystal Palace. Since the switchover, I get a weak signal on the four HD channels (Channel 30). The picture breaks up or audio and picture freeze. Has the transmitter power been decreased or could it be due to the change in frequency?

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Nick's 2 posts GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

3:28 PM

NICK ADSL UK: 100% for strength almost certainly indicates too much signal. It's likely that conditions yesterday meant that the levels received were *lower* than usual.

Too much signal causes the amplifiers inside TVs, PVRs and set-top boxes to leave their linear region - where the output of the amplifier is an exact multiple of the signal going in. Instead the signal is distorted, which starts to introduce errors in addition to the errors caused by noise and interference from other transmitters. The error-correction built into the signals can only handle so many errors: once that threshold has been exceeded, the picture and sound start to break up and, as the number of errors increases, very rapidly disappear completely.

The first thing to look at is to turn down or remove any additional amplification. You're distributing the signals to multiple rooms, so you may need to replace the distribution amplifier with a passive splitter. Unfortunately, masthead amplifiers often won't pass the signals through if you just unplug the power supply, you actually have to bypass the connection.

If the signal levels are still very high, you will need to add attenuation to bring them back into spec.

link to this comment
Mike Dimmick's 2,486 posts GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

3:54 PM

NICK ADSL UK: Incidentally, I noticed that the signal level of the BBC A multiplex, the last two evenings, was much lower than expected: only 34% on my Humax PVR, when it's usually around 60%. I'm out in Reading. The levels of the other four SD multiplexes were what I expected, around 60%. It was back to expected levels this morning.

It could of course be weather conditions or some device of my neighbours' interfering: the cable to my flat goes via a booster/splitter in theirs! Still, I wouldn't expect that to affect the strength of just one multiplex, particularly since BBC A is adjacent to ArqA (which was fine) and only two away from SDN (also fine).

link to this comment
Mike Dimmick's 2,486 posts GB
N
Nick
4:26 PM

Thanks for the reply. I think you are right about too much signal. I have a masthead amp and a distribution amp. I put an attenuator in temporarily which has improved things. I'll take the masthead amp out tomorrow and see what happens. Thanks again.

link to this comment
Nick's 2 posts GB
B
Big Mart
sentiment_satisfiedBronze

6:27 PM
London

So, has anybody got any suggestions why reception on my digital recorder for the HD channels breaks up? I have checked all other muxes and it is perfectly okay. The HD channels are okay on the television.

I have checked my signal is coming from Crystal Palace, and have checked the cables are okay.

The only thing I cannot check is the aerial, which is in a block of flats opposite and fed underground to the houses.

I live in NW9 which according to Google maps is 18 miles away from CP.

(Thanks to David Lindsay for his initial help).

link to this comment
Big Mart's 83 posts GB
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