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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, 250 BBC Red Button, plus 15 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, 30 E4 +1, 35 ITV1 +1 (London),

PSB3
BBCB
 H max
C30- (545.8MHz)324mDTG-200,000W
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
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 Player, 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 9 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, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 88 Classic Hits, 235 Al Jazeera Eng, plus 19 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, 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
Monday, 4 April 2011
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

3:26 PM

Anthony: Digital UK's predictor shows excellent reception is possible at that address. A check on the terrain shows that you might just be on the back side of a small hill, but it doesn't look like it's blocking the line-of-sight to the transmitter.

A few guesses. First, it's possible that you have too much signal. If signal strengths are generally shown at 90-100% on a Freeview HD box or TV, or over 60 dB, it can cause a problem called intermodulation or cross-modulation. This basically causes signals on adjacent channels to interfere with each other.

Alternatively, it could be that the system hasn't been set up to handle the HD service at this time. Communal systems have to amplify the signal a lot in order to then split the signal to several dwellings. This can be easier if each channel is filtered and then amplified separately - this gives much better results if the levels are different on different frequencies, but can lead to not getting some services at all if the system hasn't been designed to carry that channel.

Ask the building manager if the HD services are currently supported, and to have the levels adjusted so that they're in the right range.

If it is a problem of too much signal, you can also add an attenuator to the lead to reduce the signal levels. It's better to get them to sort it out, though.

You're not very far away from the transmitter, less than 15 km, and for some communal systems you can end up with direct signal pick-up in the TV and a delayed signal from the aerial system. On analogue TV this would cause ghosting. The HD services should be able to handle a delay caused by signals travelling up to 74 km further, though.

Communal systems will need to be adjusted again at switchover, to avoid problems with too much signal, and also due to channel changes. The public service multiplexes are all moving to former analogue channels, and the commercial multiplexes to the channels freed by the PSB muxes. The building management should be prepared for this. Property Managers - Home has information.

The switchover dates for the London region are expected to be announced this Thursday, and are expected to be before July 2012 (before the Olympics). (RG47SH)

link to this comment
Mike Dimmick's 2,486 posts GB
Saturday, 9 April 2011
Sunday, 10 April 2011
J
james
4:26 PM

hi there, recently had new aerial in our block, new points, top of the range cable. no problems before this change but not Mux 1 and Mux B channels are fluctuating wildly betwen 100 to 45 %, actually mux b just goes between 40-60% really fast, causing glitches every minute.

Avonline came and turned signal strength down a bit as it was high but this not resolved problem...

neighbour also has it.. these are best two answers so far on digitalspy, anyone agree?

It sounds like there is overloading somewhere in the amplifiers/distribution system (due to high power analogue still being transmitted from Crystal Palace). Check the analogue side of your TV (UHF channels 23, 26, 30 & 33). Do you see any strange patterning on the screen? If so, it's a sure sign there is signal overload. This could be "dazzling" the input side of your Freeview TV/box, and causing the break-up you're getting. Also check with neighbours and see if they have the same problem. If so, get the installers back and tell them to put the system right.


It's the signal quality that matters most, more than the signal level. If/when you get the installers to come back they need to adjust the RF gain so that the signal quality is stable and gives a high reading, on the most troublesome MUX. They should know about things like that, if they're competent.

link to this comment
james's 1 post GB
Tuesday, 12 April 2011
J
John
2:29 AM

I note that Crystal Palace will transmit MUX New8 on ch 42 after switchover (out of group). Which channels will be transmitted on this mux? (ie what channels will I gain if I change to a wideband aerial?

link to this comment
John's 2 posts GB
Briantist
sentiment_very_satisfiedOwner

6:00 AM

John: It is an allocation for Local TV, services may or may not start at switchover. See the Local television | ukfree.tv - independent free digital TV advice section.

link to this comment
Briantist's 38,844 posts GB
K
kieran r
sentiment_satisfiedBronze

2:14 PM

james:

i have the same problem but on MUX 1 a 2 its really anoying it dose it to my BT box too i have no amp flyersi live in basing stoke rg238ds

C.P needs to doo somthing about it


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kieran r's 32 posts GB
Wednesday, 13 April 2011
A
Aaron
8:21 AM
London

Hi,

I am running a Philips HDT8520 PVR, which until 12th April 2011 was perfectly able to receive all the available freeview HD channels. From this date, all HD channels were showing as 'signal lost'.

I have re-tuned and unplugged the aerial several times and the box no longer finds any HD channels. The problem is the same for my TV which has a built in freeview HD receiver.

Is this a symptom of the switchover process? I have a communal aerial that serves a block of flats and as far as I am aware it has not been altered or tampered with. My postcode is SW15 2PX which shows a good signal strength according to the coverage checker service.

Any suggestions as to what might be going on would be much appreciated.

Cheers,

Aaron

link to this comment
Aaron's 2 posts GB
Briantist
sentiment_very_satisfiedOwner

8:32 AM

Aaron: There is no "switchover process" in London until next year. I would look at Single frequency interference | ukfree.tv - independent free digital TV advice .

link to this comment
Briantist's 38,844 posts GB
A
Aaron
10:28 AM
London

Briantist - Thanks for your advice. I have nothing else plugged into the PVR/TV and the situation hasn't changed to trigger the loss of the channels.

Could it be that somebody else in the building is affecting the signal/causing the interference?

Cheers,

Aaron



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Aaron's 2 posts GB
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