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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 05/06/2023 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, 30 E4 +1, 35 ITV1 +1 (London),

 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

 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

 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

 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

 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

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.

Saturday, 21 April 2012

7:01 PM

martyh: Regarding the possibility of software updates rectifying this problem, unfortunately the answer is in my opinion no! as rectifying these type of issues generally has to be carried out via RS232 socket transfers or directly into the appropriate test pin area on the PCB if factory updated, that is "if" the manufacturers provided the software for such an action in the first place, something which I very much doubt as the problem would not have been known about then.

That of course being the norm with any digital receiving device hence the reason for the constant stream of software updates one hears about, and the greater the number of updates seen for the same model an indication that the previous one was, to put it, "a shot in the dark" in an attempt to cure whatever defect it was intended to correct.

Your problem does though have slight similarities to a much later manufactured range of Sony TV's that suffered switch over instigated problems, Sony's answer to the problem was to provide users affected with a software update on a £15.00 refundable deposit flash drive to be inserted into the offending TV's USB socket, but to my knowledge Sony is about the only company that has used this procedure.

I have to admit, that I personally feel that the only way your problem is likely to be overcome is by replacement of tuner, the problem there being the cost of such an action would likely exceed the cost of just purchasing a Freeview box and coupling this into the TV's scart socket, or if you didn't want a Freeview box to be seen then use one of these small wedge types that fits directly into the TV's scart socket.

As I am rather curious about this problem from my own point of view, and at the first opportunity I fully intend to check if the TV tuners part number is different between the 05 suffix models and the models without, as that would give a clue if Philips had fitted updated tuners in some later models, so maybe you could let me have the TV's serial number as hardware update notifications on service sheets use that info to indicate when a switch was made.

Regarding the use of the old Virgin box, if you are referring to the original Virgin "Free TV" branded box then its worth giving it a try connected as you have mentioned plus a scart lead coupling between the V box and TV, but its really a hit and miss thing as the tuner spec I have on these only gives the very basic of information and so you might find that it doesnt work for the same reason as your Philips.

By the way, this is a link for one type of scart Freeview receivers I referred to, but there are a few other brands available as well.

Konig Digital Freeview Scart Receiver: Electronics

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jb38's 7,179 posts GB

7:10 PM

Janice: There has to be something else involved, as there is no such thing as digital or analogue distribution amplifiers, as they amplify anything.

link to this comment
jb38's 7,179 posts GB
David Taylor
7:16 PM

Hi JB38
Tried the bit of wire and screen freezes with
no signal message.
Interestingly enough the frozen picture still
has the interfence and hum on it.
Been watching it and noticed that even with sound muted the hum is still there on the picture.The hum is loudest on a full white screen and practically dissapears on a red screen. The picture interference looks like
the heat haze you get on hot days and seems worse when there are a lot of vertical colour
changes and dissapears on something like a long range landscape picture.Shame they don't
still transmit the test card.
The TV is a 14" Bush CRT says AK46 on the back (I still think that a CRT tube gives a
far superior picture compared to LCD)
Just popped into ASDA on the way home and they'd sold out off most of their Freeview TVs guess no-one told them about the switchover:)

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David Taylor's 12 posts GB
7:19 PM

Got a strange problem here.

Since the 18th my PVR is not picking up anything on UHF28 (Arq B, Mux D, whatever you want to call it!). My fairly new Samsung TV picks it up no problem though, and they're connected in-line.

The box is an old Asda one, the Durabrand DPVR801. I'm 7km from Crystal Palace (bearing 126°) and am using a set top aerial.

I used to need a powered amplifier to get a good signal on all channels. I tried removing it from the setup to see if it made a difference, but no luck.

All other channels seem to be fine, but when I do a manual scan on 28 it just shows nothing at all.

Like I said before, the aerial lead goes through the PVR into the TV and the TV picks the channels up fine.

Anyone got any ideas? I can watch the channels on the TV, but there are occasions where I like to record things on ITV4, so would prefer to get this fixed if possible!

Many thanks.

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Martyn's 3 posts GB

7:23 PM

ok jb38 - yes I'm asking lots of questions, as you are, out of curiosity. I expect you are right re 'just get a freeview box.' Interested to learn about the whys and why nots on my Philips model. On the updates, I DO have a serial port (9 pin like mouse type on a compo) and a common interface slot - both at the rear, along with the modem previously mentioned. Not much about how to/why to/when to use any of these, or what they are for in the manual! Re model info rear stickers read :-



MODEL 32DW9625/05R

AG 220131 100583


Will mull your last post a bit more, and come back to you.


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martyh's 25 posts GB

7:25 PM

TV updates are mainly to do with apps like bbc i player they have nothing whatsoever to do with the changeover or loss of signal

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NICK ADSL UK's 72 posts GB

7:26 PM

David How: I was just having a read at your posting and wondered exactly what you are using for an aerial? as anything used in Dulwich that has more efficiency than a simple set top aerial is liable to cause a multitude of problems through signal overloading, and with any indications seen as far as the strength or quality is concerned being totally inaccurate as the tuner will be verging on instability thereby giving incorrect indications.

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jb38's 7,179 posts GB
Dave Lindsay

8:00 PM

Big Mart: Where signals from more than one transmitter are picked up by the aerial, different pieces of equipment can decide to go with different transmitters.

Go to BBC One HD and then bring up the signal strength screen. For Crystal Palace the UHF channel used for HD services is C30.

According to Digital UK Tradeview predictor you may be able to pick up Sandy Heath (C21), Hannington (C39) or perhaps Hemel Hempstead (C47).

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Dave Lindsay's 5,724 posts GB

8:05 PM

David Taylor: Going by your latest report regarding the symptoms seen on the TV makes it rather obvious that something in your system is causing severe instability to occur, are you positive that the scart lead between the box and the TV is OK? what to do is wiggle each of the two scart sockets in turn whilst observing the interference, as if the main earth has come off inside the scart plug (or TV's socket) that can cause problems.

The other point is that this model of TV is made by Vestel (Turkey) and is notorious for bad joints in various places, so do you have any other devices in the house that you can connect into the TV's scart socket to verify that its OK?

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jb38's 7,179 posts GB

8:19 PM

martyh: Thanks for that info, and which I have copied down and will have a check on early next Monday or Tuesday depending on what my non-domestic electronics work schedule might dictate.

The other point about your problem being, that even if Philips (or any other company) customer services puts you through to the technical service side of the help line even they don't get involved with the nitty-gritty of in-depth fault finding and are inclined to believe what they see printed in an info sheet given to them is the gospel, which in many cases it isn't.

Anyway I will get back on this.

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jb38's 7,179 posts GB
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