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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

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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 London, 2 BBC Two England, 9 BBC Four, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 601 BBC RB 1, plus 17 others

PSB2
D3+4
 H max
C26 (514.0MHz)324mDTG-3200,000W
Channel icons
3 ITV (London), 4 Channel 4 London ads, 5 Channel 5, 6 ITV 2, 13 Channel 4 +1 London ads, 14 More4, 15 Film4, 24 ITV4, 24 ITV4 +1, 28 E4, 33 ITV +1 (London),

PSB3
BBCB
 H max
C30- (545.8MHz)324mDTG-6200,000W
Channel icons
45 Film4 +1, 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
10 ITV3, 20 Drama, 21 5 USA, 26 ITV Be, 27 ITV 2 +1, 30 5STAR, 34 ITV3 +1, 37 Quest, 44 Channel 5 +1, 54 My5, 58 ITV Be +1, 59 ITV4 +1, 61 True Entertainment, 63 Blaze, 66 CBS Reality, 70 Horror Channel, 80 Blaze +1, 83 Quest +1, 203 CITV, 211 Ketchup TV, plus 17 others

COM5
ArqA
 H max
C22 (482.0MHz)321mDTG-8200,000W
Channel icons
11 pick, 12 Dave, 17 Really, 29 E4 +1, 32 Sony Movie Ch, 38 Quest Red, 41 Food Network, 46 Challenge, 48 Movies4Men, 68 truTV, 69 Tru TV +1, 72 YourTV, 233 Sky News, plus 9 others

COM6
ArqB
 H max
C28- (529.8MHz)321mDTG-8200,000W
Channel icons
18 4Music, 19 Yesterday, 25 Home, 31 Spike, 39 CBS Action, 42 Travel Channel, 47 4seven, 71 CBS Drama, 73 YourTV +1, 79 Dave ja vu, 84 Quest Red +1, plus 21 others

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

com7
 H -6.7dB
C33 (570.0MHz)324mDTG-643,100W
Channel icons
56 5USA +1, 57 VIVA, 64 CBS Action +1, 67 CBS Reality +1, 81 Talking Pictures TV, 82 Vintage TV, 87 Keep It Country, 106 BBC Four HD, 107 BBC News HD, 108 Al Jazeera Eng HD, 109 Channel 4+1 HD, 110 4seven HD, 113 RT HD, 205 CBeebies HD,

com8
 H -7dB
C35 (586.0MHz)324mDTG-639,800W
Channel icons
55 5STAR+1, 86 More4 1, 95 Freesports, 96 Forces TV, 115 BT Showcase HD (not free), plus 3 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
to BBC London region - 55 masts.
regional news image
ITV London News 4.9m homes 18.4%
from London WC1X 8XZ, 11km north-northwest
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?

years1950s~851984-971997-981998-20122012-132013-182013-1731st Mar 2018-
aerial groupVHFA KA KA KA KA KA KA K
C1BBCtv
C22-2ArqAArqAArqABBCA
C23ITVITVITVBBCABBCABBCAD3+4
C25-1SDNSDNSDNBBCB
C26BBC1BBC1BBC1D3+4D3+4D3+4SDN
C28-B-ArqB-ArqB-ArqBArqA
C29-DLW
C30C4C4C4-BBCB-BBCB-BBCBArqB
600C32-A
C33BBC2BBC2BBC2com7
C34+C
C35com8

orange background for multiplexes names more
green background for transmission frequencies
lilac background for power levels in watts
800MHz band: 4G mobile started in 2013
700MHz band: 4G from 30 June 2020more
600MHz band: new or moved digital TV services more
Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W
Italics for analogue, digital switchover was Wednesdays 4th April and 18th April 2012.

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
PreDSO-BBCB*(-20dB) 10kW

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
Sunday, 15 October 2017
S
Stuart
9:12 AM

I am on the edge of the Crystal Palace reception area in Bucks. Consequently my aerial is mounted on a high mast. I bought a new 4k Hitachi TV yesterday. It does not pick up any channels from BBCB or COM7 muxes. At one stage it did register BBC4 HD (COM7) but I have since lost that. My previous Panasonic TV did not have this problem although I occasionally got service interruption and pixelation on the HD channels that are broadcast by these muxes.

Any suggestions as to how I might resolve the issue and/or why I only experience this problem on a new TV and specific muxes? Thanks.

link to this
Stuart's 3 posts GB
MikeP
11:03 AM

Stuart:

Different TV sets have different sinsitivities of the tuner unit - even ones of thre same make.

We need to know what the TV set shows as the signal strengths of the received multiplexes are, including the ones giving problems, if possible. Your User Manual will tell you how to get that displayed. For SD channels you need a strength of between 50% and 85% and for the HD services you need between 60% and 85% for reliable reception. Note that Com7 and Com8 are lower power than the main services, so are likely to be more prone to problems.

It would also be useful to us if you would give a full post code for your location as then we can look up what the reception conditions are likely to be.



link to this
MikeP's 1,617 posts Gold Gold GB
S
Stuart
10:36 PM Beaconsfield

Thanks Mike. The signal strength and quality are both barely registering (under 10%) when I do manual tune for those muxes with occasional spikes on strength but not quality. My post code is HP9 1BW. Strictly I think we may be about 10 metres off the Crystal Palace map. We are at the top of a hill. Our neighbours have resorted to FreeSat and maybe we'll have to do the same. I think the previous owners of our house erected a tall mast to compensate for the slope we are very much towards the top of. Do you think a high gain aerial might do the trick?

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Stuart's 3 posts GB
Stuart's: Freeview map terrain plot frequency data R&TI Service digitaluk trade DAB coverage
Monday, 16 October 2017
MikeP
11:25 AM

Stuart:

Such a low signal strength suggests you have an aerial problem.

Firstly, check all your aerial cables are free from any damage and there is no water ingress. Also check that all the plugs are fitted to cables correctly, if in any doubt replace the cable and connectors. Then check that your aerial is undamaged and has not been moved by winds, etc. Then check that there are no tree directly in front of the aerial. Then check that you are tuned to the Crystal Palace transmitter and not the Wooburn or High Wycombe transmitters which are closer to you (they are 'Freeview Light' transmitters so don't carry all the channels). If you have an aerial amplifier in the system, check it is actually working (just having the power light on does not mean it's working). Likewise, if you have a signal distribution unit fitted, check that is working properly as well.

If you still have such low signal strengths then I suggest you need an aerial contractor to check your system from the roof downwards.



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MikeP's 1,617 posts Gold Gold GB
S
Stuart
11:05 PM

Thanks Mike. I confess that, looking at the aerial, it looks to be pointing more due east than south east towards Crystal Palace so maybe the wind has caught it. I will also have a poke around in the loft where there's both an amplifier of some sort and a distribution unit but how I will check theyre working, I'm not sure! I wired a new cable from the wall socket to the TV at the weekend but that didn't help.

Thanks for all your help.

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Stuart's 3 posts GB
Tuesday, 17 October 2017
MikeP
11:48 AM

Stuart:

Start by getting the aerial correctly aligned - that could solve the problem immediately.

If it doesn't them all you can do is to replace the amplifier first and see if that changes things, If that doesn't then you will need to change the distrbution unit and hope that solves it. Note that such distribution units also contain an amplfier and it's not usually a good idea to have two amplifiers in series - unless the reception conditions are so marginal that strengths are extremely weak. But that introduces the possibility if unwanted noise reducing the signal quality to the extent that it becomes unviewable!



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MikeP's 1,617 posts Gold Gold GB
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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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