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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.

Are there any planned engineering works or unexpected transmitter faults on the Crystal Palace (Greater London, England) mast?

Crystal Palace transmitter - Crystal Palace transmitter: Possible effect on TV reception week commencing 17/06/2024 Pixelation or flickering on some or all channels Digital tick

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

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.

 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

 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),

 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

 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 ITV3 +1, 59 ITV4 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 78 TCC, 81 Blaze +1, 83 Together TV, 91 WildEarth, 93 ITVBe +1, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 30 others

 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

 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), 63 GREAT! romance mix, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 235 Al Jazeera Eng, plus 18 others

 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

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.

Wednesday, 9 May 2012

12:07 AM

Big Mart; Well you have just about exhausted about every possible test that there is to try, although should the chance ever arise for you to try your DVD recorder out on someone else's aerial system I would love to know the outcome of the test, as I feel that your HD problem is caused by either your recorder malfunctioning when on HD, or that that the quality of the signal is defective as far as HD is concerned before reaches your flat, as it has to be one of the two.

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jb38's 7,179 posts GB flag
Edward Horne
10:01 AM

I have a Humax 9200T, as of the 8th the picture is breaking up,
The signal detection before this date was a strength of 95% and quality of 80%.
These figure are now, strength 92% and fluctuating +2%, quality 40% and jumping randomly to 50, 60 100%.
As I say before the 8th and since tuning since the changeover everything has been fine.
Any suggestion?

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Edward Horne's 2 posts GB flag
Edward's: mapE's Freeview map terrainE's terrain plot wavesE's frequency data E's Freeview Detailed Coverage
Big Mart

6:11 PM

jb38: I actually own a house in Portsmouth, which I maybe visiting over the weekend. I usually leave the recorder in London so that it can record programmes if I am out.

If I took the recorder down with me; it would presumably need to be retuned for the local transmitter. Would all the programmes that are saved on the recorder remain, and would any new programmes recorded down there, be viewable without problem in London.

The tv down there doesn't have HD, but I presume that is not a problem.

However with all the setting up there, and re-setting back here, I wonder if it is worth it ?!

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Big Mart's 83 posts GB flag
Big's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
9:01 PM

jb38: The plot thickens.

I would have explained earlier (I thought this issue was a simple one, wrongly), but I have a fairly complex setup. My aerial goes into a 0-20 attenuator and then into a Labgear 16 way destribution unit. Four of the outputs from the Labgear go to my WMC PC. Four others go to TVs throughout the house, three of which are HD ready, but don't have Freeview HD. Therefore, I get the HD from WMC extenders attached to my WMC PC (wired).

My Horizon meter shows channels 22, 23, 25, 26 & 28 having a signal strength of 30db. Using WMC I am able to see that all of these channels are giving signal qualities of 100%. As you say, the Horizon meter is no good for HD, so I can only diagnose that WMC reports the HD channel signal strengths are 60%.

WMC scans for channels by region (i.e. country) rather than by transmitter. So, when I setup the TV signal, WMC actually detects more than one source for certain channels. All but the Crystal Palace sources have inferior signal qualities. Where I live in Chelmsford, I get an unrestricted signal from Crystal Palace as I am quite high up with very few houses between me and the fall away of the hill I am at the top of. The aerial is setup to point slightly upwards of horizontal.

I have spoken to an aerial installer on the phone today and was told that the only way to be certain what might be wrong (if at all) is to do a survey. Sadly, they don't cover my area. So, I'll need to find a local installer (one I can trust as I've been stung before and am a bit wary now).

I hope this explains better my setup and how I am able to quantify the signal.

Thanks for your patience


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Tony's 9 posts GB flag

9:01 PM

Big Mart: If you enter your 4 digit password and carry out a "full rescan" there is no danger whatsoever of you affecting anything you have already stored, and although the TV at your other property isnt an HD model it doesnt really matter anyway, as you will still be able to see the actual HD channel that the Sony is picking up / recording but with you only being able to view it in SD.

Of course it would have been more preferable if you could have managed to try some other HD device on your present aerial system as what you have suggested is a second best but is certainly "still" worth a try, as if it records glitch free then it points to the signal you are receiving at your present location being sub standard.

As far as your other property is concerned, although I dont wish to appear as being a tad pessimistic, but I take it you have been in the area since any switchover activities (if that is) have taken place? as if you havent, then it brings another variable into the equation as far as the signal strength at your other property is concerned, although if its a Freeview TV then at least this will enable you to assess the situation regarding reception.

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jb38's 7,179 posts GB flag
Big Mart

11:25 PM

jb38: I have been to the other property since switchover, and the television has been done.

However, since posting this, I can think of somebody only a few miles away from me that I could take it to. Although obviously not on the same aerial system, we share the same transmitter! (Don't know if his tv is HD - I doubt it!).

As I look up my street, the neighbours all seem to have Sky dishes. Certainly the ones that I know to talk to have dishes.

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Big Mart's 83 posts GB flag
Big's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage

11:42 PM

Big Mart: It doesn't really matter where you can try the Sony so long as its on a different aerial system to that presently used, and if what you have mentioned is at all possible then all good and well and I would be most interested to know the outcome of your tests.

The other fact of you having mentioned that most other people in your street all seem to have Sky dishes can obviously be interpreted in two ways, as in most places where this is seen it can ring alarm bells insomuch that the area is one of bad reception, or of course that its just the case that Sky is favoured for reception, although in my experience its usually the former reason.

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jb38's 7,179 posts GB flag
Thursday, 10 May 2012
Alan Tuthill
9:58 AM

My mother lost reception of ITV and ITV+1 last night 9/5/12. Is it possible to trace what repeater this was coming from?

RG5 postcode

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Alan Tuthill's 1 post EU flag
Alan's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage

10:05 AM

Tony: Having gone over everything you have reported and noting the info regarding the distribution amplifier etc given on your latest update, I would like you to try your Horizon meter connected directly onto the end of the aerial lead before it goes into anything, as although the 30db reading you have reported is quite capable of giving good reception it should really be quite a bit higher than this (45db+) to keep well above the reception threshold of the tuner, or the slight variations in signal levels that occur on a daily basis due to weather conditions etc can start to cause problems.

The other unfortunate aspect about your set up is that you do not have any way of checking the HD reception via the aerial system used except on your WMC card, and there isn't enough info around about this device (the card) regarding its performance to be able to assess certain aspects about its performance, like for example if its known to be stable on a channel that has a negative offset on its frequency such as applies with C/P's HD mux, this being why I enquired if you had tried to receive HD from Sudbury as it transmits bang on frequency.

If your Horizon is giving a reasonably accurate indication of the signal strength you receive then take the attenuator out of line, as rather than attenuate the signal it could benefit from a slight boost, so if you find that the signal level is higher directly from the aerial than when measured at the WMC, then for a test link the aerial directly onto the coax that's used to feed to the WMC, giving an update on results.

It would be interesting though to know what kind of results you would get if your aerial was directed towards Sudbury rather than Crystal Palace

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jb38's 7,179 posts GB flag
TW15 1LU
10:57 AM


I have found that the addition of a High Pass Filter, to ones aerial wire can vastly improve reception. It does this by cutting out the transmissions from cab radios, radio hams and generalUHF interference. Obviously, the signal strength reaching your TV is affected but inbuilt amplifiers can take care of that. A real pleasure to watch with one of these fitted.

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TW15 1LU's 12 posts GB flag
TW15's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
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