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Full Freeview on the Sandy Heath (Central Bedfordshire, England) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps52.130,-0.242 or 52°7'47"N 0°14'33"Wsa_postcodeSG19 2NH

 

The symbol shows the location of the Sandy Heath (Central Bedfordshire, England) transmitter which serves 920,000 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 Sandy Heath (Central Bedfordshire, 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 Sandy Heath 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
C27 (522.0MHz)291mDTG-180,000W
Channel icons
1 BBC One (SD) Cambridge, 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

PSB2
D3+4
 H max
C24 (498.0MHz)291mDTG-180,000W
Channel icons
3 ITV 1 (SD) (Anglia (West micro region)), 4 Channel 4 (SD) South ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 South ads, 18 More4, 26 ITV4, 30 E4 +1, 35 ITV1 +1 (Anglia east),

PSB3
BBCB
 H max
C21+ (474.2MHz)291mDTG-180,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV 1 HD (ITV Meridian Southampton), 104 Channel 4 HD South ads, 105 Channel 5 HD, 106 BBC Four HD, 109 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

COM4
SDN
 H -0.2dB
C33 (570.0MHz)291mDTG-8170,000W
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

COM5
ArqA
 H -0.2dB
C36 (594.0MHz)289mDTG-8170,000W
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

COM6
ArqB
 H -0.2dB
C48 (690.0MHz)289mDTG-8170,000W
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

DTG-8 64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)

Which BBC and ITV regional news can I watch from the Sandy Heath transmitter?

regional news image
BBC Look East (West) 1.0m homes 3.7%
from Cambridge CB4 0WZ, 29km east-northeast (66°)
to BBC Cambridge region - 4 masts.
70% of BBC East (East) and BBC East (West) is shared output
regional news image
ITV Anglia News 1.0m homes 3.7%
from Norwich NR1 3JG, 119km east-northeast (60°)
to ITV Anglia (West) region - 5 masts.
All of lunch, weekend and 80% evening news is shared with Anglia (East)

How will the Sandy Heath (Central Bedfordshire, England) transmission frequencies change over time?

1965-80s1984-971997-981998-20112011-1312 Feb 2020
VHFA K TK TK TW TW T
C6ITVwaves
C21C4wavesC4wavesC4waves+BBCBBBCB
C24ITVwavesITVwavesITVwavesD3+4D3+4
C27BBC2wavesBBC2wavesBBC2wavesBBCABBCA
C31BBC1wavesBBC1wavesBBC1waves
C32com7
C33SDN
C34com8
C35_local
C36ArqA
C39C5wavesC5waves
C43_local
C48ArqBArqB
C51tv_offSDN
C52tv_offArqA
C55tv_offcom7tv_off
C56tv_offCOM8tv_off

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 30 Mar 11 and 13 Apr 11.

How do the old analogue and currrent digital signal levels compare?

Analogue 1-4 1000kW
BBCA, D3+4, BBCB(-7.4dB) 180kW
SDN, ARQA, ARQB(-7.7dB) 170kW
com7(-13dB) 49.6kW
com8(-13.1dB) 49.1kW
Mux 1*, Mux 2*, Mux A*, Mux B*, Mux C*, Mux D*(-17dB) 20kW
Analogue 5(-20dB) 10kW

Which companies have run the Channel 3 services in the Sandy Heath transmitter area

Oct 1959-Feb 2004Anglia Television
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.

Comments
Wednesday, 13 April 2011
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

2:41 PM

Colin: ArqB is using a different mode than Mux B used to, which requires 3-4 dB more signal. If Mux B was marginal it's not surprising that ArqB is now not working.

The mode change is to increase capacity - that capacity is being used by Sky Sports 1 & 2, which the BBC was temporarily carrying on Mux B before today. All the channels had to come off Mux B as it's replaced by the HD mux. At some transmitters that switched last year, Mux D did not switch mode (to become ArqB) and that caused a lot of pain and confusion for existing and would-be Sky Sports subscribers, who were told they couldn't get the channels. BT Vision, TUTV, Sky Sports 1+2 and the Mendip transmitter | ukfree.tv - independent free digital TV advice

link to this comment
Mike Dimmick's 2,486 posts GB
Briantist
sentiment_very_satisfiedOwner

4:11 PM

I've patched the page to show the move of ArqB to C67, as per one version of the Digital UK documentation.

link to this comment
Briantist's 38,844 posts GB
Briantist
sentiment_very_satisfiedOwner

4:12 PM

John: You will also require a wideband aerial to receive these multiplexes, you will never receive them with a group A aerial, which you may have.

link to this comment
Briantist's 38,844 posts GB
J
Jase
4:23 PM

Signal from ArqB/C67 is appalling today, perfectly fine before today's rescan, now almost unwatchable.

link to this comment
Jase's 1 post GB
H
Hubert
5:03 PM
Luton

Today Wednesday I retuned my TV which has built in freeview and I received only the BBC channels none others and even the BBC channels would drop out or the picture would break up. This is off a roof aerial which gave me perfect analogue picture.So I connected it to a loft aerial which I also have and this gave me 55 channels and perfect picture quality. So do I need to change my roof aerial or retune in a couple of weeks. I also noticed that my roof aerial points towards London and my loft aerial points towards Bedford. Please can you help. Thanks.

link to this comment
Hubert's 1 post GB
L
Lance
5:10 PM
Ely

@Briantist

what are these two new Muxes you list? "NEW7" on Ch 49 and "NEW8" on Ch 23? Is this confirmed, and in what timeframe? Never heard these mentioned anywhere else but here.

Cheers

link to this comment
Lance's 2 posts GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

5:41 PM

Lance: I keep telling Brian to remove those until something actually launches. It just confuses people.

They are the interleaved frequencies that could potentially be used for new services - probably Local TV services. There is no planned launch date, there isn't even a date for the auctions yet.

The rules used to consider probable frequencies were chosen to ensure that an aerial of the correct group would probably be able to receive them. I wouldn't use them as a guide as to what aerial to use, even at sites where it mattered. Sandy Heath requires a wideband aerial anyway, so it doesn't matter.

Also, the main frequency plans weren't finalized when the interleaved spectrum consultation happened, so the interleaved frequency assignments may have to change, especially where a transmitter uses one of the frequencies due to be cleared for 4G phone services (C61 and C62), or one of the frequencies that cleared services will go to (C49 or C50).

link to this comment
Mike Dimmick's 2,486 posts GB
K
KMJ,Derby
sentiment_satisfiedGold

7:36 PM

Hubert: If your roof aerial is pointing towards Crystal Palace you will get good analogue reception but on Freeview according to the Digital UK postcode checker reception is at best variable to poor and non existant on one mux.This is due in part to the current low power transmitters being on only a tenth of the post switchover power, which should then match the analogue coverage and interference from transmitters in adjacent regions.The loft aerial however is pointing at Sandy Heath which is shown as giving good reception on the high power PSB muxes and also on ArqB. Variable reception is possible for MuxA and MuxC but the signal for these two low power muxes is possibly lost with a loft aerial.It is likely that the roof aerial could also receive signals from Sandy Heath or Luton relay but these could be prone to variation in strength and interference after being received from behind or off the side of the aerial.

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KMJ,Derby's 1,811 posts GB
Andrew
7:49 PM
Kettering

Since last night and the second stage re-tune of the Sandy Heath transmitter we have lost our music channels. We can no longer get 21-Viva despite re-tuning and resetting. We received all channels before the switch.

link to this comment
Andrew's 1 post GB
S
Steve Smith
7:56 PM

Hi,
I've noticed that since switchover this morning to full digital that my signal strength on both my Humax receivers still only shows about 70%
I also have a pocket DTV receiver which is having trouble tuning into anything other than the main BBC channels.
Will the transmission power be turned up soon ?Do you know when ?
Cheers.

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Steve Smith's 1 post 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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