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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.

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 23 Dec 07:21. . AM: Radio 4 on MW has now closed. Please retune to FM, Digital Radio, digital TV, BBC Sounds or smart speakers to continue listening. More information can be found on the front page of this 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-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), 71 That’s 60s,

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 U&Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 U&Dave ja vu, 58 ITV3 +1, 59 ITV4 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 81 Blaze +1, 83 Together TV, 91 WildEarth, 93 ITVBe +1, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 251 Al Jazeera English, 255 FRANCE 24 (in English), 265 Rok Sky +1, plus 29 others

COM5
ArqA
 H max
C22 (482.0MHz)321mDTG-8200,000W
Channel icons
11 Sky Mix, 17 Really, 19 U&Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 U&Drama +1, 65 That's TV 2, 70 Quest +1, 74 &UYesterday +1, 76 That's TV 2 MCR, 233 Sky News, plus 13 others

COM6
ArqB
 H max
C28- (529.8MHz)321mDTG-8200,000W
Channel icons
12 Quest, 25 U&W, 27 U&Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! christmas, 56 That's TV (UK), 63 GREAT! romance mix, 73 HobbyMaker, 75 That's 90s, 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
Wednesday, 5 October 2011
Briantist
sentiment_very_satisfiedOwner

9:37 AM

Mark Heselden: Sorry, it is an annoying artefact that I will get rid of when the Channel 5 transmitter comes off air.

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Briantist's 38,915 posts GB flag
Monday, 10 October 2011
C
Confused
9:41 AM
Aldershot

Hi,

I have been viewing freeview which was built into my TV. The siganl was not excellent but I received most channels.
Yesterday I brought a freeview recorder and now I am not able to view ITV1, Channel 4 or Channel 5.
Any advice would be greatly appreiciated.


link to this comment
Confused's 1 post GB flag
Confused's: mapC's Freeview map terrainC's terrain plot wavesC's frequency data C's Freeview Detailed Coverage
J
jb38
sentiment_very_satisfiedPlatinum

4:19 PM

Confused: To be perfectly honest, the reception possibilites on your particular code cannot by any means be classed as good, as there is a mixture of either variable or poor being indicated, the only ones that dont being ArqA / ArqB (Mux Ch34 & 29) from Crystal Palace, albeit still not sparkling!

I would suggest that you reset the recorder to blank out channels stored, then using manual tuning you should try entering Mux Ch22, that being ITV1 from Crystal Palace.

If this procedure captures it then use the "add (or find) channels" to regain any of the others that was previously received.



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jb38's 7,179 posts GB flag
M
Matt
sentiment_satisfiedSilver

6:58 PM

JB38 - his prediction for crystal palace is a hell of a lot better than mine-I still get
perfect reception on all my tvs. Post DSO- it will be better. (50.9889,-1.4989) 

link to this comment
Matt's 101 posts GB flag
J
jb38
sentiment_very_satisfiedPlatinum

9:50 PM

Matt: Well, the difference I see is that out of the six multiplexes presently available from Crystal Palace both confused and yourself only has two of them in the green scale, the remainder under variable, confused's green being Mux Ch's 34 / 29, whereas in your case its Mux Ch's 32 / 34.

There is only two miles of a difference between you both, but with CP being at 67 degrees from confused, whereas its 49 degrees from yourself.

Predictors cannot really cater for local conditions, and so they give an approximation of what's expected.

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jb38's 7,179 posts GB flag
Tuesday, 11 October 2011
M
Mark Fletcher
sentiment_satisfiedGold

1:19 AM
Halifax

Mary of London.Difficult to say without a full postcode.First of all,Crystal Palace transmitter all mux's both at present and after DSO2 in April 2012,are within the group A aerial range (chs 21-37).The group W wideband aerial which you stated perched outside on the roof,is no use for Crystal Palace's group A frequency transmissions hence if the antenna itself is a new inferior contract wideband aerial there is a possibility that the lowest frequency you mentioned mux2 on ch22 is not being received at all.Or another possibility is mux2 on ch22 is broadcast on lower power,or a distant (but not far away region wise) relay maybe broadcasting either analogue or digital signals on ch22 causing single frequency interference as such.My best advice is to get rid of the wideband group W aerial,and replace it with a suitable but much superior Yagi 18A group A antenna with satellite grade black (preferred) or brown cable with brass co-ax plug.

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Mark Fletcher's 673 posts GB flag
Mark's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Wednesday, 12 October 2011
M
Matt
sentiment_satisfiedSilver

7:10 AM

jb38: The ostcode given is not correct. All of mine apre predicted to be variable with crystal palace. Mux 2 is only predicted to have 9 and 79 for reliability. ~It is still perfect.

(50.9889,-1.4989) 

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Matt's 101 posts GB flag
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

9:18 AM

Matt: The numbers are the percentage of locations, within the 100m x 100m National Grid square that the centre of your postcode falls into, that are predicted to have (on average) sufficient signal margin to be reliable 99% of the time, and 50% of the time, respectively. It's a measure of the difficulty of locating an aerial within that square and how coverage might vary between you and your neighbour.

The prediction is based on an aerial with CAI Standard 1-class gain, and loss of 3-5 dB in the cable depending on frequency, but the template for cross-polar and front-to-back rejection is weaker than such an aerial would normally achieve. The prediction allows for losses if the signal path goes through a square made up mostly of woodland or of dense buildings but it only allows for average losses. They might be higher or lower than allowed for.

The prediction calculates both the signal from the wanted transmitter and the interference from unwanted transmitters, including adjacent-channel interference.

Short of actually going and surveying every grid square in the country, this is probably the best we can do, but it's always going to give 'wrong' answers for some people.

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Mike Dimmick's 2,486 posts GB flag
M
Matt
sentiment_satisfiedSilver

10:36 PM

Thanks a lot for that Mike Dimmick - you've cleared up a few things.

I found that moving one of my aerials on Guildford 10ft south (away from transmitter) meant that I could get mux 2 and B, whereas before, the meter did not even register anything. Digital UK predicts Mux 2 to be poor.

My neighbour is also predicted to have better forecast on every transmitter/multiplex. We both have a Unix 52A on Crystal Palace and Unix 52 C/D on Midhurst going through a A/E combiner into an SLX 8 way. I fitted both systems so that they were EXACTLY the same. It turns out my actual reception has and is much better than his.

Another problem here is low level multipath because of the metallic insulation used in houses nowadays. It is very good at reflecting signals, but that is another thing alltoghether. Co-channel is not a problem here at all.

I have a line of sight to all the transmitters except Crystal Palace, in which Newland's corner acts as the main obstruction - I still get perfect reception. A line of sight is not always necessary. I use a Horizon HD-TM meter.

However, I am not a professional, I just got into playing around with UHF DXing from my Ham Radio activities.

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Matt's 101 posts GB flag
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Your comment please
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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