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Freeview Light on the Alexandra Palace (Greater London, England) transmitter

first published this on - UK Free TV
sa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps51.594,-0.130 or 51°35'38"N 0°7'49"Wsa_postcodeN22 7AY

 

The symbol shows the location of the Alexandra Palace (Greater London, England) transmitter which serves 4,600 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 Alexandra 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 Alexandra 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
C31 (554.0MHz)186mDTG-370W
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
C32 (562.0MHz)186mDTG-370W
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), 45 Film4 +1,

PSB3
BBCB
 H max
C37 (602.0MHz)186mDTG-670W
Channel icons
86 More4 +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,

DTG-3 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
H/V: aerial position (horizontal or vertical)

Are you trying to watch these 60 Freeview channels?

the effected channels
the effected channels
the effected channels
the effected channels
the effected channels

The Alexandra Palace (Greater London, England) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: 4Music, 4seven, 4seven HD, 5SELECT, 5Spike, 5STAR, 5STAR +1, 5USA, 5USA +1, AlJazeera English (SD), Aljazeera English HD, BBC Four HD, BBC News HD, Blaze, Blaze +1, CBeebies HD, CBS Drama, CBS Justice, CBS Reality, CBS Reality +1, Challenge, Channel 4+1 HD, Channel 5 +1, CITV, Dave, Dave ja vu, DMAX, Drama, E4 +1, Food Network, Forces TV, Freesports, Home, Horror Channel, ITV2 +1, ITV3 +1, ITV4 +1, ITVBe +1, Together TV +1, Movies4Men, NOW 80s, Now 90s, Paramount Network, PBS America, pick, Pick +1, Quest +1, Quest Red, Quest Red +1, Really, RT HD, Sewing Quarter, Sky News, Smithsonian Channel HD, Sony Movie Channel, Talking Pictures TV, TCC, Together TV, Yesterday, YourTV.

If you want to watch these channels, your aerial must point to one of the 80 Full service Freeview transmitters. For more information see the will there ever be more services on the Freeview Light transmitters? page.

Which BBC and ITV regional news can I watch from the Alexandra Palace transmitter?

regional news image
BBC London 4.9m homes 18.4%
from London W1A 1AA, 9km south (186°)
to BBC London region - 55 masts.
regional news image
ITV London News 4.9m homes 18.4%
from London WC1X 8XZ, 8km south (170°)
to ITV London region - 55 masts.

How will the Alexandra Palace (Greater London, England) transmission frequencies change over time?

1984-971997-981998-20122012-132013-182013-1724 Jul 2019
C/D EC/D EC/D EC/D E TC/D E TC/D E TA K T
C31BBCA
C32D3+4
C37BBCB
C49tv_offBBCABBCABBCA
C54tv_offC4wavesC4wavesC4wavesBBCBBBCBBBCB
C58tv_offBBC1wavesBBC1wavesBBC1wavesD3+4D3+4D3+4
C61ITVwavesITVwavesITVwaves
C64BBC2wavesBBC2wavesBBC2waves

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?

BBCA, D3+4, BBCB 70W
Analogue 1-4(-0.3dB) 65W

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. Alexandra 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
Tuesday, 22 February 2011
K
Kevin
10:11 PM
London

Hi,

I'm hoping you might have an answer to this problem, I bought a new tv today with a built in Freeview HD tuner, and when I first did the auto tuning everything worked perfect, Freeview HD the lot. However, later in the day I got 'no signal' messages on all the Freeview HD channels, all the SD channels work fine, just no signal on the HD channels. So I re-tuned the set and now those channels are gone altogether (ch 50, 51 etc) because the TV can't pick up any signals for those HD channels, tried several times re-tuning but no HD channels. As it's only my first day with Freeview HD, I'm just wondering is this problem quite common, have I just been unlucky with the day I've started, was there a known problem for HD signals in the Wood Green area today? I'm just baffled coz I had Freeview HD and now it's gone, any ideas? thanks in advance.

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Kevin's 1 post GB
Wednesday, 23 February 2011
Sunday, 10 April 2011
N
N Clark
7:43 PM
London

Hi
I have just bought a Digital Stream HD recorder. It pickes up the SD channels but Not the HD ones. I live in a small block of flats with a communial arial in the roof. We are on a hill in Crouch End. Could this be that the ariel if pointing to Ally Pally (It was installed long before digital TV and we actually have an uninterupted view of The Ally Pally mast) instead of Crystal Palace? Freevie signels generally are a bit weak here and I am using an ariel amplifier.

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N Clark's 2 posts GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

11:49 PM

N Clark: It's not very likely that the aerial points to Alexandra Palace. That's now really only a fill-in transmitter designed to fill a small hole in coverage. It doesn't transmit digital signals yet.

The BBC moved 405-line VHF transmissions to Crystal Palace in the mid-50s, and it was the first UHF transmitter in the country, starting to broadcast BBC-2 in 1962. Alexandra Palace only started broadcasting UHF signals in November 1982, according to an IBA coverage map.

mb21 - The Transmission Gallery

The predictions for your postcode are excellent, so there are two possibilities. First, that the communal aerial system is 'channelized', meaning that each channel is filtered and amplified separately, and the system has not been extended to support the HD frequency.

Second, it's possible that it *does* point to Ally Pally, and that you're actually picking up Crystal Palace simply through the cables in the walls. That would explain why you need an amplifier to get SD signals - if the levels were set correctly on the communal system, and it was designed to handle Freeview, you wouldn't need the amp.

Check the UHF channel numbers for the analogue channels. If you're using Alexandra Palace they should be BBC One: C58, BBC Two: C64, ITV1: C61 and C4: C54. If Crystal Palace, between C21 and C30. C5 comes from Croydon on C37, and if the aerial points to Crystal Palace it should be as clear as the other analogue channels. If not, it will probably be very snowy. See which set of channels is best without the amplifier.

If all channels are snowy without the amplifier, the signals in your flat are too weak all round - talk to the building manager to get them brought up to spec.

If the aerial is pointing to Crystal Palace and analogue is clear (without the amp) but Freeview is weak, the system might not have been updated for Freeview. They will need to sort this out for switchover.

If the aerial is pointing to Ally Pally and analogue is clear, this may have been done to avoid ghosting from CP. This should not be a problem after switchover - digital handles reflections very well. Alexandra Palace will only transmit the three public service multiplexes after switchover, so you'll have to talk to the building manager about the possibility of getting this changed, to get all six multiplexes reliably. (HD is one of the three PSB multiplexes.)

Some advice for building managers can be found at Property Managers - Home and some advice for you at PARAS - Professional Aerial Riggers Against The Sharks . (RG47SH)

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Mike Dimmick's 2,486 posts GB
Monday, 11 April 2011
N
N Clark
6:52 PM
London

Thanks Mike analogue is snowy without amplifier, channels all point to C. P. except BBC 2 which is comming in on C64. Will talk to Management co. to get it checked out.

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N Clark's 2 posts GB
Monday, 30 May 2011
A
Az
9:09 PM
London

I am having issues with finding the Freeview HD channels. My aerial is pointing to Crystal Palace, my postcode is n8 0qt. I am receiving the SD channels but not the HD. I have HDTV with build-in Freeview HD. So I should be receiving the HD channels. Any idea why I can't get them. I was thinking, should the aerial be pointing to Alexandra Palace instead.

Thanks in advance

A

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Az's 1 post GB
Tuesday, 31 May 2011
Briantist
sentiment_very_satisfiedOwner

7:51 AM

Az: The Alexandra Palace transmitter has no Freeview at all until Wednesday, 4th April 2012.

You are expected to get Freeview HD from Crystal Palace, but only until August 2011 due to external use of C31.

At switchover Crystal Palace will provide all channels including the Freeview HD ones.

I would suggest you look at Single frequency interference | ukfree.tv - independent free digital TV advice with regard to C31.



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Briantist's 38,846 posts GB
Monday, 27 June 2011
Transmitter engineering
sentiment_very_satisfiedOwner

10:36 AM

ALEXANDRA PALACE transmitter - Over the next week Alexandra Palace relay: TV (analogue) Service Shutdowns, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

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Transmitter engineering's 124,534 posts xx
Wednesday, 29 June 2011
Transmitter engineering
sentiment_very_satisfiedOwner

12:35 PM

ALEXANDRA PALACE transmitter - Analogue BBC ONE Off Air; DSO related from 10:03 today to 10:09 today BBC TWO Off Air; DSO related from 10:03 today to 10:09 today [BBC] Over the next week Alexandra Palace relay: TV (analogue) Service Shutdowns, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

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Transmitter engineering's 124,534 posts xx
Thursday, 30 June 2011
Transmitter engineering
sentiment_very_satisfiedOwner

7:27 AM

ALEXANDRA PALACE transmitter - Analogue BBC ONE Off Air; DSO related from 10:03 yesterday to 10:09 yesterday BBC TWO Off Air; DSO related from 10:03 yesterday to 10:09 yesterday [BBC] Over the next week Alexandra Palace relay: TV (analogue) Service Shutdowns, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

link to this comment
Transmitter engineering's 124,534 posts xx
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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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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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