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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.

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
_______

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-3200,000W
Channel icons
1 BBC One (SD) London, 2 BBC Two England, 9 BBC Four, 201 CBBC SD, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 250 BBC Red Button, plus 15 others

PSB2
D3+4
 H max
C26 (514.0MHz)324mDTG-3200,000W
Channel icons
3 ITV (SD) (London), 4 Channel 4 (SD) London ads, 5 Channel 5 (SD), 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 London ads, 18 More4, 24 ITV4, 33 ITV +1 (London),

PSB3
BBCB
 H max
C48- (689.8MHz)324mDTG-6200,000W
Channel icons
101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV HD (ITV London), 104 Channel 4 HD London ads, 105 Channel 5 HD, 204 CBBC HD,

COM4
SDN
 H max
C25 (506.0MHz)314mDTG-8200,000W
Channel icons
 Spotlight TV, 12 Quest, 20 Drama, 21 5USA, 27 ITV2 +1, 30 5STAR, 34 ITV3 +1, 40 Movies4Men, 44 Channel 5 +1, 54 Paramount Network, 55 5SELECT, 58 ITVBe +1, 59 ITV4 +1, 63 Blaze, 66 CBS Reality, 70 Horror Channel, 77 TCC, 80 Blaze +1, 203 CITV, 211 Ketchup TV, plus 21 others

COM5
ArqA
 H max
C22 (482.0MHz)321mDTG-8200,000W
Channel icons
11 pick, 17 Really, 19 Dave, 28 E4 +1, 32 Sony Movie Channel, 38 Quest Red, 41 Food Network, 45 Film4 +1, 46 Challenge, 72 YourTV, 76 Quest +1, 84 Now 90s, 89 Together TV, 233 Sky News, plus 10 others

COM6
ArqB
 H max
C28- (529.8MHz)321mDTG-8200,000W
Channel icons
25 Yesterday, 29 4Music, 31 5Spike, 37 DMAX, 39 CBS Justice, 42 Home, 47 4seven, 71 CBS Drama, 73 Sewing Quarter, 79 Dave ja vu, 81 Talking Pictures TV, 91 PBS America, 235 AlJazeera English (SD), plus 16 others

LW
 H -10dB
C29 (538.0MHz)324mDTG-1220,000W
Channel icons
from 31st March 2014: 8 LONDON LIVE,

com7
 H -6.7dB
C55 (746.0MHz)324mDTG-643,100W
Channel icons
 Vintage TV, 57 5USA +1, 67 CBS Reality +1, 78 Quest Red +1, 86 More4 +1, 92 Pick +1, 99 Smithsonian Channel HD, 107 BBC News HD, 108 Aljazeera English HD, 109 Channel 4+1 HD, 110 4seven HD, 113 RT HD, plus 2 others

com8
 H -7dB
C56 (754.0MHz)324mDTG-639,800W
Channel icons
 CBS Action +1, 56 5STAR +1, 64 Freesports, 83 NOW 80s, 93 Together TV +1, 96 Forces TV, 106 BBC Four HD, 114 Quest HD, 205 CBeebies HD, plus 2 others

DTG-3 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
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-80s1984-971997-981998-20122012-132013-182013-1721 Mar 2018
VHFA K TA K TA K TA K TA K TA K TW T
C1BBCtvwaves
C22-2ArqAArqAArqAArqA
C23ITVwavesITVwavesITVwavesBBCABBCABBCABBCA
C25-1SDNSDNSDNSDN
C26BBC1wavesBBC1wavesBBC1wavesD3+4D3+4D3+4D3+4
C28-B-ArqB-ArqB-ArqBArqB
C29-DLWLW
C30C4wavesC4wavesC4waves-BBCB-BBCB-BBCB
C32-A
C33BBC2wavesBBC2wavesBBC2wavescom7com7
C34+C
C35com8com8
C48BBCB
C55tv_offcom7tv_off
C56tv_offcom8tv_off

tv_off Being removed from Freeview (for 5G use) by 30 June 2020 - 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
Saturday, 28 April 2018
S
StevensOnln1
sentiment_very_satisfiedPlatinum

5:04 PM

Peter K: 100% signal stength is too high and can overload the tuner. Search for the article on this website titled "Too much of a good thing" and try an attenuator.

link to this comment
StevensOnln1's 2,708 posts GB
Sunday, 29 April 2018
J
joe jones
1:14 PM

Hi Joe before your recent update which i tuned as asked I enjoyed my Aljazeer can you re establish please

thanks

link to this comment
joe jones's 1 post GB
C
Colin R
2:43 PM
Weybridge

Peter K: StevensOnln1 is probably right if you have recently installed an amplifier or extra amplifier. But if nothing has changed in your setup and suddenly you are getting this problem then apart from cable or connection faults, it is possible that it is co-channel interference from the recent transmitter channel changes. However this doesn't explain you having this problem on all muxes, so it may well be a signal strength or an intermittent cable / connection fault.

You said that you live far down in Hampshire, so-channel interference may be experienced on channels 55 and 56 because Hannington is since 18 April transmitting Com7 and Com8 on these channels which, for those in the overlap area between Hannington and Crystal Palace, now conflict with Crystal Palace which has been broadcasting these muxes on channels 55 and 56 since 21 March.

You may also experience co channel interference on channel 35 if you are close to the Lambourne repeater transmitter, and / or channel 30 if you are close to the Tidworth repeater, both of which have had channel changes on 18 April that now conflict with Crystal Palace.

Did you start getting your problems from 18 April onwards? If it was earlier then your problem is unlikely to be co-channel interference.

link to this comment
Colin R's 8 posts GB
S
StevensOnln1
sentiment_very_satisfiedPlatinum

5:24 PM

joe jones: Al Jazeera is still broadcasting from Crystal Palace on the COM7 mux which moved to UHF channel 55 last month. If you can't restore it by manual tuning then you most likely have a Group A aerial which is not designed to receive the higher frequencies now used for COM7 & COM8. If this is the case you may be eligible to have a replacement wideband aerial fitted free of charge, which can be arranged by contacting the Freeview Advice Line (see link below).

Important changes to Freeview TV signals | Freeview

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StevensOnln1's 2,708 posts GB
Monday, 30 April 2018
C
Chris Roberts
10:10 AM

Re: Al Jazeera and all Channel 55 programmes. Since Hannington changed Channels on 18 April, Channel 56 improved considerably BUT Channel 55 Signal Strength & Quality have fallen to ZERO. I too miss Al Jazeera!, The problem is NOT to do with the aerial frequency response but is co-channel anti-phase interference in which transmissions from Crystal Palace & Hannington cancel each other out - they are both about the same strength and clearly anti-phase. Channel 56, on the other hand, from these transmitters are "in-phase" AND HAVE STRENGTHED OUR SIGNAL POST THE HANNINGTON CHANGE.
This is clearly a POLICY problem and needs to be addressed urgently.

link to this comment
Chris Roberts's 14 posts GB
R
Roger Scott
11:40 AM

Chris Roberts
I agree with you on this. I can get signals from both Crystal Palace and Hannington of equal strength and like you I can receive channel 56 (com 8) but get absolutely nothing from channel 55 (com 7)

link to this comment
Roger Scott's 9 posts GB
R
Roger
12:31 PM
Maidenhead

Chris Roberts:

Hi there
I also live in area where you can pick up both Crystal Palace and Hannington transmitters. Now unable to get channel 55 (com7) and having no problem with Channel 56 (com8). So, who do you contact to sort out the problem? Digital UK, Arqiva or the BBC

link to this comment
Roger's 3 posts GB
C
Chris Roberts
4:56 PM

Great, Fantastic -1645hrs 30 April - Channel 55 restored and quite strong - managed to retune all Channel 55 programmes and all OK. Also all the new channels now working OK. Hope it stays like this!!!
Whoever arranged it - THANKS.
Chris.

link to this comment
Chris Roberts's 14 posts GB
C
Colin R
11:01 PM

Chris Roberts: Great news Chris. However, for some others in this Crystal Palace thread I am sad to repeat my previous tongue-in-cheek comment "Just when you though it was safe to go back in the kitchen.... (or whereever else in your house that your TV is)!"

The reason is that these channels changes to various transmitters are going to go on apace for the rest of the year. The next change that may cause Crystal Palace viewers of Com7 on channel 55 problems is that Rowridge main transmitter (big and powerful like CP and Hannington) on the Isle of Wight is going to start transmitting Com7 on ch 55 on 2 May -Wednesday this week.

Fortunately for you Chris in GU1 and others in the Sonning area etc that have had problems with the Hannington co-channel interference since 18 April, Rowridge signals shouldn't bother you except on the few ocassions a year when there is a 'Tropospheric lift' that allows UHF signals to travel much further than normal, for a few hours or a day or so.

However, people in the overlap between Crystal Palace and Rowridge - roughly north-west to south of Basingstoke and down to a line east of Winchester - who currently choose to watch London programmes from Crystal Palace may possibly start to suffer the same co-channel interference that has affected the Hannington / CP overlap area recently, unless the authorities get the phasing right.

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Colin R's 8 posts GB
C
Colin R
11:17 PM

For Crystal Palace viewers who are wondering if the authorities planning and implementing these channel changes for the 700MHz clearance are entirely competent, you may be astonised to read the following excerpt from DigitalUK's Industry Briefing dated Feb 2018, updated Mar 2018 which talks about all of the channel changes in several regions including London, i.e. including Crytal Palace:

Most aerials are expected to be capable of receiving a reliable signal following the changes. However, some grouped aerials - notably group C/D - may need to be updated. A wideband model is generally recommended.

So, notice how this paragraph completly fails to recgnise that everyone tuned to Crystal Palace who have a group A aerial will most likely not be able to receive Com7 and Com8 on ch55 and ch56, unless they live quite close to the transmitter.

How can anyone have any confidence in DigitalUK if they fail to give correct guidance on even the most basic principles that group A aerials are not only not designed to receive 740-760MHz (ch55 & 56), these aerials are actually specifically designed to reject these signals!

link to this comment
Colin R's 8 posts GB
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