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

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps51.424,-0.076 or 51°25'26"N 0°4'32"Wsa_postcodeSE19 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.

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-200,000W
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, plus 16 others

PSB2
D3+4
 H max
C26 (514.0MHz)324mDTG-200,000W
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, 28 ITVBe, 30 E4 +1, 35 ITV1 +1 (London),

PSB3
BBCB
 H max
C30- (545.8MHz)324mDTG-200,000W
Channel icons
46 5SELECT, 101 BBC One HD London, 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, 107 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

COM4
SDN
 H max
C25 (506.0MHz)314mDTG-8200,000W
Channel icons
20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 78 TCC, 81 Blaze +1, 83 Together TV, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 30 others

COM5
ArqA
 H max
C22 (482.0MHz)321mDTG-8200,000W
Channel icons
11 Sky Mix, 17 Really, 19 Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 Drama +1, 65 That's TV 2, 70 Quest +1, 74 Yesterday +1, 75 That's 90s, 233 Sky News, plus 11 others

COM6
ArqB
 H max
C28- (529.8MHz)321mDTG-8200,000W
Channel icons
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! romance, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! romance mix, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 235 Al Jazeera Eng, plus 18 others

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

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, 12km north-northwest (335°)
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
Monday, 16 October 2017
MikeP
sentiment_very_satisfiedPlatinum

11:25 AM

Stuart:

Such a low signal strength suggests you have an aerial problem.

Firstly, check all your aerial cables are free from any damage and there is no water ingress. Also check that all the plugs are fitted to cables correctly, if in any doubt replace the cable and connectors. Then check that your aerial is undamaged and has not been moved by winds, etc. Then check that there are no tree directly in front of the aerial. Then check that you are tuned to the Crystal Palace transmitter and not the Wooburn or High Wycombe transmitters which are closer to you (they are 'Freeview Light' transmitters so don't carry all the channels). If you have an aerial amplifier in the system, check it is actually working (just having the power light on does not mean it's working). Likewise, if you have a signal distribution unit fitted, check that is working properly as well.

If you still have such low signal strengths then I suggest you need an aerial contractor to check your system from the roof downwards.



link to this comment
MikeP's 3,056 posts GB flag
S
Stuart
11:05 PM

Thanks Mike. I confess that, looking at the aerial, it looks to be pointing more due east than south east towards Crystal Palace so maybe the wind has caught it. I will also have a poke around in the loft where there's both an amplifier of some sort and a distribution unit but how I will check theyre working, I'm not sure! I wired a new cable from the wall socket to the TV at the weekend but that didn't help.

Thanks for all your help.

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Stuart's 3 posts GB flag
Tuesday, 17 October 2017
MikeP
sentiment_very_satisfiedPlatinum

11:48 AM

Stuart:

Start by getting the aerial correctly aligned - that could solve the problem immediately.

If it doesn't them all you can do is to replace the amplifier first and see if that changes things, If that doesn't then you will need to change the distrbution unit and hope that solves it. Note that such distribution units also contain an amplfier and it's not usually a good idea to have two amplifiers in series - unless the reception conditions are so marginal that strengths are extremely weak. But that introduces the possibility if unwanted noise reducing the signal quality to the extent that it becomes unviewable!



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MikeP's 3,056 posts GB flag
Tuesday, 31 October 2017
G
Graham Drinkell
7:18 PM

Hi Mike,
No problem normally, with receiving signal from xtal Palace tx. But today the reception is particularly poor, with most channels blank. No engineering work is scheduled today. Any ideas please? Maybe, just wait a couple of days to see if rx improves?

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Graham Drinkell's 1 post GB flag
M
MikeB
sentiment_very_satisfiedPlatinum

9:25 PM

Graham Drinkell: i've just said what I'm going to say to you - check your cables. If they are Ok, then you need to call a professional, because if its not the transmitter, its your system.

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MikeB's 2,579 posts GB flag
Wednesday, 1 November 2017
MikeP
sentiment_very_satisfiedPlatinum

6:39 PM

Graham Drinkell:

From The Wrekin pages today

"This is very likely caused by the high atmospheric pressure affecting various parts of the country, causing lift conditions which allow signals from distant transmitters which cannot normally be received to interfere with the signals from the transmitter you normally use. Do not attempt to retune as this will delete all of your channels which are already correctly tuned. As this is an entirely natural phenomenon, all you can do is wait for the atmospheric conditions to return to normal."



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MikeP's 3,056 posts GB flag
Tuesday, 28 November 2017
T
Tony Ferguson
8:40 PM
Surbiton

I live in KT6 5EW and am having problems recently with all signals from Multiplex COM7 and 8 Crystal Palace with picture pixelating and breaking up. This is happening on both my TV and Youview Box. The current signal strength is fluctuating between 0% and 75% with quality fluctuating between 0% and 65%.

BBC 1 both signal strength and quality 100%.according to the Youview box.

I have no problems receiving London Live which is a lower powered transmitter. I tried a freeview retune on my YV box and now none of the Com7 & 8 channels are even showing. Prior to this I had no problems on any of these channels.

I have a very strong signal on the other muliplex broadcasts and has only been happening for about the last 3-4 weeks, only on these channels.

My aerial is external and fairly recent.

Any ideas ??

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Tony Ferguson's 6 posts GB flag
Tony's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
M
MikeB
sentiment_very_satisfiedPlatinum

9:44 PM

Tony Ferguson: Try changing your aerial lead - if its kaput or has a dodgy connection, then it can wipe out certain muxes. Even if nothing has changed, you'll know its not that, and the are very cheap.

At 17km from Crystal Palace, you should get a cracking signal, so check that your actually tuned to that transmitter, and if you are, then check the rest of your system.

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MikeB's 2,579 posts GB flag
Thursday, 30 November 2017
T
Tony Ferguson
1:07 AM

MikeB: Thanks for that, I've already done this. It is over 4 devices all of which were picking up the signals strongly with a splitter in the loft connecting to 2 devices downstairs and 2 upstairs so I checked all of these connections.
All were picking up these signals fine until about 3-4 weeks ago. I purchased a booster for the upstairs ones about 6 weeks ago as the signal started degrading slightly and now all have gone. I wondered if the transmitters/muxes were being downgraded as I note that ch 81 is moving today.

link to this comment
Tony Ferguson's 6 posts GB flag
M
MikeB
sentiment_very_satisfiedPlatinum

9:10 AM

Tony Ferguson: Read again what you've written. You bought a booster 6 weeks ago, because the signal had started to degrade, and then things got bad on the other sets 3-4 weeks ago.

Crystal Palace covers alone something like 20% of the UK population, and there is no evidence of anything being 'downgraded' - especially since you are just 17km from the transmitter (you should have no need for a booster at that distance, and possibly not a powered splitter). A problem that lasted perhaps for 6 weeks would get picked up very quickly.

Loads of people think that somehow its the transmitter, etc. But in the majority of cases, its their own system, and the evidence would suggest the same goes for you.

Since the problem is on all TV's, start by noting the strength of each mux on each TV. That allows you to identify if its one spur thats worse than the others. But since they all have a problem, the fault is almost certainly with the splitter (power supply?) or above it. Start by bypassing the splitter - if the signal improves, then you know its that.

And then go up the chain. A TV aerial is a bit of metal, and attached to a wire just 6mm wide. Even in a loft it can degrade, get loose connections, and outside will get battered by all the weather can throw at it. And stuff goes wrong.


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MikeB's 2,579 posts GB flag
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Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

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