Freeview: Crystal Palace (Greater London, England) Full Freeview transmitter
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Full Freeview on the Crystal Palace (Greater London, England) transmitter

Google StreetviewGoogle mapBing mapGoogle Earth51.424,-0.076 or 51°25'26"N 0°4'32"WSE19 1UE

4G at 800MHz (at800) Freeview reception issues

When 800MHz 4G mobile broadband services start there will be 3 multiplexes in the higher risk range (C21-23, C30, C59-60): C22: ArqA, C23: BBCA, C30: BBCB
See How do I know if the 4G broadband will overload my Freeview? and Full UK map of 4G issue areas for details.

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. Click to recheck

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The symbol shows the location of the Crystal Palace (Greater London, England) transmitter which serves 4,490,000 homes.

Other maps:Crystal Palace DABCrystal Palace AM/FMCrystal Palace regionBBC LondonLondon

Radiation patterns

Radiation patterns withheld

Map key

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.


List by multiplex|List by channel number|List by channel name|See terrain plot

Crystal Palace transmitter Freeview broadcasts

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.

MuxAerial positionFrequencyHeightModeWatts
PSB1
BBCA
 horizontal max
C23 (490.0MHz)324m64QAM 8K 2/3
24.1Mb/s DVB-T MPEG2		200,000W
Channel icons
1 BBC One London, 2 BBC Two England, 7 BBC Three, 9 BBC Four, 70 CBBC Channel, 71 CBeebies, 80 BBC News, 81 BBC Parliament, 301 301, plus 12 others

PSB2
D3+4
 horizontal max
C26 (514.0MHz)324m64QAM 8K 2/3
24.1Mb/s DVB-T MPEG2		200,000W
Channel icons
3 ITV (London), 4 Channel 4 London ads, 5 Channel 5 London ads, 6 ITV 2, 13 Channel 4+1 London ads, 14 More 4, 28 E4, 33 ITV +1 (London),

PSB3
BBCB
 horizontal max
C30- (545.8MHz)324m256QAM 32KE 2/3
40.2Mb/s DVB-T2 MPEG4		200,000W
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, plus 1 others

COM4
SDN
 horizontal max
C25 (506.0MHz)314m64QAM 8K 3/4
27.1Mb/s DVB-T MPEG2		200,000W
Channel icons
10 ITV 3, 20 G.O.L.D. (not free), 25 Dave ja vu, 26 Home (not free), 27 ITV 2 +1, 30 5*, 31 5USA, 34 ESPN UK (not free), 38 Quest, 39 The Zone, 44 Channel 5 +1, 72 CITV, plus 22 others

COM5
ArqA
 horizontal max
C22 (482.0MHz)321m64QAM 8K 3/4
27.1Mb/s DVB-T MPEG2		200,000W
Channel icons
11 PICK TV, 12 Dave, 17 Really, 29 E4+1, 32 Movie Mix, 46 Challenge, 48 Food Network, 82 Sky News, 87 Community Channel, plus 9 others

COM6
ArqB
 horizontal max
C28- (529.8MHz)321m64QAM 8K 3/4
27.1Mb/s DVB-T MPEG2		200,000W
Channel icons
15 Film 4, 18 4Music, 19 Yesterday, 21 VIVA, 24 ITV 4, 41 Sky Sports 1 (not free), 42 Sky Sports 2 (not free), 47 4seven, 83 Al Jazeera English, 85 RT English , plus 21 others



Regional news from the Crystal Palace transmitter


BBC London 4.9m homes 18.4%
from London W1A 1AA, 11km north-northwest
to BBC London region - 55 masts.

ITV London News 4.9m homes 18.4%
from London WC1X 8XZ, 11km north-northwest
to ITV London region - 55 masts.

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 the transmission frequencies change over time

years1950s~851984-971997-981998-20122012-132013-182013-18
aerial groupVHFA KA KA KA KA KA K
C1BBCtv
C22-2ArqAArqAArqA
C23ITVITVITVBBCABBCABBCA
C25-1SDNSDNSDN
C26BBC1BBC1BBC1D3+4D3+4D3+4
C28-B-ArqB-ArqB-ArqB
C29-Dlocal
C30C4C4C4-BBCB-BBCB-BBCB
600C32-A
C33BBC2BBC2BBC2com7
C34+C
C35com8

orange background for multiplexes names moregreen background for transmission frequencieslilac background for power levels in watts800MHz band: 4G mobile to start in 2013700MHz band: possible 4G in 2019 more600MHz 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.

  • Ofcom have projected that a local television service for London including Greater London area could use an Interleaved Frequency on the Crystal Palace transmitter using C29
  • COM7, COM8 projected for 2013-16. COM7 and COM8 to operate as Crystal Palace,Guildford, Reigate SFN.

Comparison of old analogue and current digital signal levels

Analogue 1-4 1000kW
SDN, ARQA, ARQB, com7, com8, BBCA, D3+4, BBCB(-7dB) 200kW
Mux 1*, Mux 2*, Mux A*, Mux B*, Mux C*, Mux D*(-17dB) 20kW
PreDSO-BBCB*(-20dB) 10kW

History of Channel 3 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.


Your comments: most recent posts are at the bottom

firstFirst comments prevEarlier comments  ◊  Later commentsnext Latest commentslast

Your comments are always welcome. Please use the form below to add your thoughts or questions to this page. We will get back to you as soon as we can.

Transmitter engineering
Saturday 4 February 2012 4:43AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 16:00 on 31 Jan to 08:00 on 01 Feb BBC ONE Weak Signal from 16:00 on 01 Feb BBC ONE Weak Signal from 08:01 on 01 Feb to 16:00 on 01 Feb BBC ONE Weak Signal from 08:00 on 31 Jan to 16:00 on 31 Jan BBC ONE Weak Signal from 05:43 on [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Sunday 5 February 2012 4:32AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 16:00 on 31 Jan to 08:00 on 01 Feb BBC ONE Weak Signal from 16:00 on 01 Feb BBC ONE Weak Signal from 08:01 on 01 Feb to 16:00 on 01 Feb BBC TWO Weak Signal from 16:00 on 31 Jan to 08:00 on 01 Feb BBC TWO Weak Signal from 16:00 on [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Sunday 5 February 2012 4:32AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 16:00 on 31 Jan to 08:00 on 01 Feb BBC ONE Weak Signal from 16:00 on 01 Feb BBC ONE Weak Signal from 08:01 on 01 Feb to 16:00 on 01 Feb BBC TWO Weak Signal from 16:00 on 31 Jan to 08:00 on 01 Feb BBC TWO Weak Signal from 16:00 on [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Monday 6 February 2012 6:29AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 16:00 on 01 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Monday 6 February 2012 6:29AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 16:00 on 01 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Monday 6 February 2012 9:29AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 16:00 on 01 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] stal Palace Transmitter works 7 February 2012: Engineering transmitter work will take place between 00:01hrs and 06:00hrs. TV services that will be disrupted: Analogue services - BBC1, ITV and Channel 4 will be subject to periods of shutdown. Digital services - n/a [DUK] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Monday 6 February 2012 9:29AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 16:00 on 01 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] stal Palace Transmitter works 7 February 2012: Engineering transmitter work will take place between 00:01hrs and 06:00hrs. TV services that will be disrupted: Analogue services - BBC1, ITV and Channel 4 will be subject to periods of shutdown. Digital services - n/a [DUK] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Aerial point
Monday 6 February 2012 5:35PM High Wycombe
Hello,
I was wondering if anyone knew which freeview services will be disrupted at stage one of the switch over?

i.e If I don't bother to reutne on the 4th, what would I miss.

Regards
jb38
Monday 6 February 2012 6:10PM
Aerial point: As far as April 4th is concerned its only the BBC Mux that will be changing from Ch25 to Ch23 whereby you will lose it unless you re-tune, the remaining Muxes changing their operating channels on April 18th.
Transmitter engineering
Tuesday 7 February 2012 4:31AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 today BBC ONE Off Air; DSO related from 00:26 today BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] stal Palace Transmitter works 7 February 2012: Engineering transmitter work will take place between 00:01hrs and 06:00hrs. TV services that will be disrupted: Analogue services - BBC1, ITV and Channel 4 will be subject to periods of shutdown. Digital services - n/a [DUK] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Tuesday 7 February 2012 4:31AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 today BBC ONE Off Air; DSO related from 00:26 today BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] stal Palace Transmitter works 7 February 2012: Engineering transmitter work will take place between 00:01hrs and 06:00hrs. TV services that will be disrupted: Analogue services - BBC1, ITV and Channel 4 will be subject to periods of shutdown. Digital services - n/a [DUK] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Tara
Tuesday 7 February 2012 5:42AM
Crystal Palace Transmitter, I get my signal via Downley (High Wycombe. At about 3.30am I went to check Ceefac on BBC1, the screen was completely black. I was receiving BBC2, ITV1 & CH4. I cannot get CH5 at all.I can`t check with my neighbours as they use Sky & it`s now about 5am. I retuned my TV but can now only get BBC2 & have no lost ITV1 & CH4. I wish I hadn`t bothered. I live in a small area of High Wycombe that can only get 4 terrestrial channels normally. (Since about 3.30am I`ve only had 1).
Tara
Tuesday 7 February 2012 6:27AM
6.05am 7/2/12 As it is past 6am when the engineering work stops I re-tuned my TV & all channels 1 - 6 are in service again. Thank you for your help & information. I tried the BBC but they didn`t have a clue about engineering work being in progress & suggested that it could be high pressure or my equipment. Luckily I found your website after the BBC had let me down.
Transmitter engineering
Tuesday 7 February 2012 6:28AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 today BBC ONE Off Air; DSO related from 00:26 today to 05:41 today BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 today BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] stal Palace Transmitter works 7 February 2012: Engineering transmitter work will take place between 00:01hrs and 06:00hrs. TV services that will be disrupted: Analogue services - BBC1, ITV and Channel 4 will be subject to periods of shutdown. Digital services - n/a [DUK] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Tuesday 7 February 2012 6:28AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 today BBC ONE Off Air; DSO related from 00:26 today to 05:41 today BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 today BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] stal Palace Transmitter works 7 February 2012: Engineering transmitter work will take place between 00:01hrs and 06:00hrs. TV services that will be disrupted: Analogue services - BBC1, ITV and Channel 4 will be subject to periods of shutdown. Digital services - n/a [DUK] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Tuesday 7 February 2012 2:45PM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 today BBC ONE Off Air; DSO related from 00:26 today to 05:41 today BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 today BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Tuesday 7 February 2012 2:45PM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 today BBC ONE Off Air; DSO related from 00:26 today to 05:41 today BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 today BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Briantist
Tuesday 7 February 2012 4:12PM
Tara: Always happy to hear when we have helped! Thank you.
Transmitter engineering
Tuesday 7 February 2012 6:29PM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 today BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 today BBC ONE Off Air; DSO related from 00:26 today to 05:41 today BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Tuesday 7 February 2012 6:29PM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 today BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 today BBC ONE Off Air; DSO related from 00:26 today to 05:41 today BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Briantist
Tuesday 7 February 2012 8:14PM
Aerial point: Please see "Digital switchover process details" at the top of the page, and also
www.ukfree.tv link icon Switchover process - clarification of details | ukfree.tv - independent free digital TV advice .
Transmitter engineering
Wednesday 8 February 2012 4:31AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 yesterday BBC ONE Off Air; DSO related from 00:26 yesterday to 05:41 yesterday BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 yesterday BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Wednesday 8 February 2012 4:31AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 yesterday BBC ONE Off Air; DSO related from 00:26 yesterday to 05:41 yesterday BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 yesterday BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Mrs Pearce
Wednesday 8 February 2012 10:25AM
We live in Barnet can you tell us when our signal will return to normal please
Briantist
Wednesday 8 February 2012 10:28AM
Mrs Pearce: I would have a look at www.ukfree.tv link icon Freeview reception has changed? | ukfree.tv - independent free digital TV advice as there is no transmitter problems reported at the moment.
Transmitter engineering
Wednesday 8 February 2012 4:30PM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 yesterday BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 yesterday BBC ONE Off Air; DSO related from 00:26 yesterday to 05:41 yesterday BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Wednesday 8 February 2012 4:30PM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 yesterday BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 yesterday BBC ONE Off Air; DSO related from 00:26 yesterday to 05:41 yesterday BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Aerial Point
Wednesday 8 February 2012 6:45PM
Thanks for the replies jb38 and Briantist. I'm getting asked a lot of questions re the switchover at work.

Can I ask one more?

I'v heard that some devices at switchover will prompt for a re-tune?

i.e Click OK to reset your TV and perform a full system reset.

If this is true, do you know where I could find a list of devices that will do this?

Regards
AP
Adrian
Wednesday 8 February 2012 8:51PM London
My freeview stopped working on Sunday. The picture on all of the freeview channels is very bright.

The picture is fine with the analogue channels and with movies played through a PC.

What could be causing this?

My postcode is SW9 9PE
Transmitter engineering
Thursday 9 February 2012 4:31AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 on 07 Feb BBC ONE Off Air; DSO related from 00:26 on 07 Feb to 05:41 on 07 Feb BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 on 07 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Thursday 9 February 2012 4:31AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 on 07 Feb BBC ONE Off Air; DSO related from 00:26 on 07 Feb to 05:41 on 07 Feb BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 on 07 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Briantist
Thursday 9 February 2012 6:48AM
Aerial Point: I don't think such a list exists. The changes to allow boxes to auto retune at switchover was added to the specification for Freeview (the so-called D-Book) quite some years ago.
Briantist
Thursday 9 February 2012 7:06AM
Adrian: It is most likely the SCART cable that connects your Freeview box to the set. Remove it from both devices and then reconnect it firmly.
jb38
Thursday 9 February 2012 9:01AM
Aerial Point: Just to confirm / back up Briantist's reply to your query insomuch that this is quite correct there isn't any list, and with so many variations in the menu facilities offered between the various brands (and sometimes across different models within) from basic primitive to quite sophisticated its not practical to make a note of them.
Alex
Thursday 9 February 2012 12:51PM Tadworth
Hello,

Recently moved into a new flat, and it picks up every single SD channel fine, however, it struggles with the HD channels.

When I first tuned it in the day time, it picked them all up, and the signal/quality were both strong. However, as soon as it got dark, it lost all signal/quality.

I have since retuned all channels, and it won't pick up any HD channels at all. Doing a signal check on channel 31 in the Manual install option gives 0% Signal and 0% quality, however every other frequency channel is around 70% signal, 100% quality.

Any ideas? Using a Humax HDR-FOX T2.
Postcode KT20 6SU

THanks all
KMJ,Derby
Thursday 9 February 2012 1:43PM
Alex: Although the Crystal Palace signal on C31 is predicted to offer reasonable odds on giving good reception on the HD services, the signal is at risk of interference from both Sandy Heath and Reigate at your location. When retuning at a time of receiving a poor quality signal (or no signal) the details of the HD channels would have been removed from the receiver's memory. Wait until 18th April 2012 for the high power HD service to start at Crystal Palace, otherwise, until that date keep looking at doing a manual tune on C31 to see if the low power signal has returned.
Mike Dimmick
Thursday 9 February 2012 2:22PM
Alex: The HD channels are on lower power than the other multiplexes at present, and the multiplex also uses the same channel as one of the SD multiplexes from Reigate, at the moment.

This will change on 18 April: the HD services will move, taking over Channel 4 analogue's frequency, and be boosted to the same high power as the other multiplexes' new power levels - 20x the current power level.

Night-time does tend to cause interfering signals to travel further, something called 'tropospheric enhancement'.
David
Friday 10 February 2012 12:29AM
Alex. The HD channel is also at a higher bit rate, which means that it needs a better signal to noise ratio. This means that it is at a disadvantage of more than the factor of 2 implied by the relative transmit power, when compared with ITV multiplexes and even more when compared with BBC ones. It will still be at a disadvantage when it goes to full power in April.
Transmitter engineering
Friday 10 February 2012 11:28AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Off Air; DSO related from 00:26 on 07 Feb to 05:41 on 07 Feb BBC ONE Weak Signal from 05:41 on 07 Feb BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 on 07 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Friday 10 February 2012 11:28AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Off Air; DSO related from 00:26 on 07 Feb to 05:41 on 07 Feb BBC ONE Weak Signal from 05:41 on 07 Feb BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 on 07 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Friday 10 February 2012 3:41PM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 on 07 Feb BBC ONE Weak Signal from 05:41 on 07 Feb BBC ONE Off Air; DSO related from 00:26 on 07 Feb to 05:41 on 07 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Friday 10 February 2012 3:41PM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 on 07 Feb BBC ONE Weak Signal from 05:41 on 07 Feb BBC ONE Off Air; DSO related from 00:26 on 07 Feb to 05:41 on 07 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Friday 10 February 2012 6:29PM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 on 07 Feb BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 on 07 Feb BBC ONE Off Air; DSO related from 00:26 on 07 Feb to 05:41 on 07 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Friday 10 February 2012 6:29PM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 on 07 Feb BBC ONE Weak Signal from 16:00 on 01 Feb to 00:26 on 07 Feb BBC ONE Off Air; DSO related from 00:26 on 07 Feb to 05:41 on 07 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Peter G
Friday 10 February 2012 9:11PM
I live in dartford and a a day or two ago I've lost bbc 1+ 2 bbc news bbc 3.

I've tried to retune however it just picks up itv and the other channels
Mike Dimmick
Friday 10 February 2012 10:12PM
David, Alex: That is not true. The DVB-T2 standard is just that much more efficient than DVB-T (reflecting nearly 15 years more development). The mode selected for the BBC B multiplex is only very slightly less robust than the post-switchover mode for the other multiplexes, which is about the same as for Mux 2 and Mux A now. The difference in radiation pattern between two channels is typically larger than the difference in the margin required between a DVB-T and DVB-T2 multiplex.

Now that the commercial multiplexes are going to use 64QAM 3/4 mode, not 64QAM 2/3 as BBC A and D3&4 will, the HD multiplex should definitely be more robust than them.
Transmitter engineering
Sunday 12 February 2012 4:33AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 on 07 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Sunday 12 February 2012 4:33AM
CRYSTAL PALACE transmitter - Analogue BBC ONE Weak Signal from 05:41 on 07 Feb BBC TWO Weak Signal from 16:00 on 01 Feb [BBC] Over the next week Crystal Palace main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
maureen
Sunday 12 February 2012 4:14PM
My nephew bought a digital tv (December) with no inbuilt freeview-as he is a teenager can someone please help him with firstly which reasonably priced box he would need and any other information that might help
Thank's
jb38
Sunday 12 February 2012 5:01PM
maureen: I find it quite amazing that he managed to buy a analogue only TV unless from some second hand source, is he absolutely positive that it is purely an analogue set and that DVB isn't seen mentioned on the remote control?

However, any of these low priced Freeview boxes seen in places like Argos etc should be perfectly suffice for his needs provided the TV he purchased does have a scart socket?
if not then any Freeview box purchased has to be of the type with an RF modulator so that the signal can be fed into the TV's aerial socket.

Of course needless to say he will require a suitable aerial, although advice on this only being possible by having knowledge of his post code, this to enable checking of the signal level expected at his location.
Adrian
Sunday 12 February 2012 6:36PM
Thanks Brian but I don't have a set top box, the arial goes straight into the TV.
jb38
Sunday 12 February 2012 8:11PM
Adrian: You are indicated as being only 4 miles away from Crystal Palace and as such very prone to suffer from severe signal overloading problems, and indeed likely be unable to get any reception at all come April 18th when Crystal Palace goes over to high power operation, as the signal will grossly overload the tuner in your TV.

If you have a set top aerial lying around try a test using that to see what happens on your Freeview channels, if it helps the situation then you will require to use an attenuator in line with the aerial socket on your TV.

However maybe you could give an update regarding your aerial, that is where installed.



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.

If you have no satellite signal, see Sky Digibox says 'No Signal' or 'Technical fault'

If you have other problems, please provide a full (not partial) postcode (or preferably enter it in box at the top right) and indicate where if aerial is on the roof, in the loft or elsewhere.

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