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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 02/10/2023 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, 250 BBC Red Button, plus 15 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, 109 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! Movies Action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 69 HorrorXtra, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 91 WildEarth, 203 CITV, 208 Pop Player, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 16 others

 H max
C22 (482.0MHz)321mDTG-8200,000W
Channel icons
 Smithsonian Channel, 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, 60 Drama +1, 70 Quest +1, 71 That's 60s, 74 Yesterday +1, 75 That's 70s, 233 Sky News, plus 9 others

 H max
C28- (529.8MHz)321mDTG-8200,000W
Channel icons
 Quest Red +1,  Classic Hits, 12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! romance, 73 HobbyMaker, 76 That's 80s, 82 Talking Pictures TV, 83 Together TV, 84 PBS America, 90 Together TV +1, 235 Al Jazeera Eng, plus 19 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.

Thursday, 19 April 2012

8:33 AM

The TV quality of picture is down on standard freeview not much but as you say morningster

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NICK ADSL UK's 72 posts GB flag

8:44 AM

Paul: I had a check at the manual for your TV and you are quite correct insomuch that it does have a DVB-T2 tuner installed.

However now thats been confirmed then the other possibility exists and is something I have mentioned to quite a few others with similar problems, that of your HD signal being excessively high and is overloading the tuner, as a overly strong signal will usually affect HD channels before SD, and even although you will see a weaker signal being indicated its something thats frequently seen in these type of situations, as the excessive level of signal corrupts the measuring circuitry as well as blocking the actual reception.

A simple test is to try using a set top aerial should you have access to one, or even a short piece of wire (about 12") plugged into the inner part of the aerial socket, re-tuning after having connected either set top or wire.

I would have had a better idea of exactly what signal you are liable to be receiving if you had provided your post code, or one from a shop etc very near by.

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jb38's 7,179 posts GB flag
8:45 AM

JB38: if by booster, you mean signal amplification within the home, I haven't got any.

What am I testing for using the method you suggest? Also, what type of wire is adequate for this (how about an unbent wire hanger)?

Thanks for your help.

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morningster's 2 posts GB flag
8:49 AM

My postcode range is WD17.
Thanks for your help with this.


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Paul's 3 posts GB flag

9:32 AM

Paul: Quite a few variations can be found under that code area but Hemel Hempstead is indicated at only 4 miles away and Crystal Palace at 22 miles so you could be receiving from either station.

The best way to assess the situation is if you are receiving normal BBC and ITV OK then you should also be on the HD channels unless what I mentioned is applying.

Do you actually know where you are receiving your signal from? if you can see the aerial and its mounted with the elements up and down then its Hemel Hempstead, but if horizontal its Crystal Palace, if you cannot see the aerial then what channel number do you see indicated if carrying out a BBC1 signal test? Hemel is Ch44 with its HD channel on Ch47, Crystal Palace Ch23 with its HD channel being Ch30, I mention this in case you are not picking up the corct match.

By the way, any copper wire like a strand of lighting flex or even your wire hanger idea, although I dont generally advocate that in case it forces the inner part of the aerial socket open too much.

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jb38's 7,179 posts GB flag
9:39 AM

I live in the London Area and have done a retune. Problem is the ITV 1 Channel keeps retuning to Anglia TV at Sandy Heath.
I dont want the local news from East Anglia.
Please help!

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John's 1 post GB flag
David How
9:55 AM

I left re-tunning my Samsung LE32R41BD television until today, Thursday 19th so that the Crystal Palace could be stable? (The television is an early HD ready television, which I believe does not include an HD Freeview receiver).

In Dulwich I am on the edge of a lower signal area close to the Crystal Palace. Auto re--tuning has always been problematic with this television. I have had to rely on manually re-tuning each multiplex channel (Ch22) to obtain the media channels (BBC1, BBC2 etc).

I have been manually re-tuning for the last hour. Some multiplex channels have had to be rescanned manually many times to identify the media channels. Detected media channels (BBC1, BBC2 etc) have Mux Signal strength of 70 to 80, (this is an increase in signal strength) all with Zero bit error rates. Ch26 D3+4 was the most difficult to scan and decode the media channels.

My findings, which may indicate an aerial group problem are:

MuxCh Detected No. Media Channels

22 Present 21
23 Present 22
24 Not Detected
25 Present 30
26 Present 10
27 Not Detected
28 Present 31
29 Not Detected
30 Not Detected
31 Not Detected
32 Not Detected
33 Not Detected
34 Not Detected
35 Not Detected
36 Not Detected

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David How's 1 post GB flag
Kevin Hodges

11:07 AM

I live in the Chelmsofrd area and use Sudbury (Anglia) for my signal, however both my mother-in-law (who also lives in Chelmsford) and mother (Billericay) both use Crystal Palace. Both areas are on the 'outer edges' of the transmitter. I have now re-tuned all their sets and PVRs. In all cases I recieved all muxes with good/very good signal strengths being reported. This leads me to conclude that many of the problems being reported here do relate to excess signal and it is well worth experimenting with the suggestions outlined above
Good luck

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Kevin Hodges's 27 posts GB flag
Kevin's: mapK's Freeview map terrainK's terrain plot wavesK's frequency data K's Freeview Detailed Coverage
Mike Dimmick

12:34 PM

David How: The number of channels shown there seem about right. DMOL Post-DSO Multiplex Channel Allocations lists which 'media channels' are on which multiplex, and the table above ('After Wednesday 18 April 2012') lists which multiplex is on which UHF channel.

For perverse reasons of his own, Briantist, who runs this website, has decided to list possible future extensions - local TV and new commercial multiplexes - along with the services that are currently running. On a TV that doesn't support Freeview HD, you will only expect to find services on BBC A, D3&4, SDN, ArqA and ArqB at present. BBC B will only show up on Freeview HD equipment.

Given the high signal strength you're reporting, the tuning difficulty could be to down to having too much signal. If you have an amplifier or booster, try removing it or turning it down. If not, consider adding an attenuator.

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Mike Dimmick's 2,486 posts GB flag
Mike Dimmick

12:49 PM

John: Your box is probably one of the stupid ones that stores the first version of a channel that it finds, rather than the best quality one. See Digital Region Overlap for suggestions.

Only D3&4 and BBC B are on lower frequencies at Sandy Heath than at Crystal Palace, and BBC B is only visible to Freeview HD equipment.

Do check whether the TV or box has an auto-retune function. If it does, check the manual to see how to turn this feature off.

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Mike Dimmick's 2,486 posts GB flag
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