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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.

Are there any planned engineering works or unexpected transmitter faults on the Sandy Heath (Central Bedfordshire, England) mast?

Sandy Heath transmitter - Sandy Heath transmitter: Possible effect on TV reception week commencing 04/12/2023 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 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.

 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, plus 16 others

 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, 28 ITVBe, 30 E4 +1, 35 ITV1 +1 (Anglia east),

 H max
C21+ (474.2MHz)291mDTG-180,000W
Channel icons
46 5SELECT, 101 BBC One HD Cambridge, 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, 107 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

 H -0.2dB
C33 (570.0MHz)291mDTG-8170,000W
Channel icons
20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 35 others

 H -0.2dB
C36 (594.0MHz)289mDTG-8170,000W
Channel icons
 Smithsonian Channel, 11 Sky Mix, 17 Really, 19 Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 Drama +1, 65 That's Christmas, 70 Quest +1, 74 Yesterday +1, 75 That's 90s, 233 Sky News, plus 11 others

 H -0.2dB
C48 (690.0MHz)289mDTG-8170,000W
Channel icons
 Quest Red +1,  Classic Hits, 12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! christmas, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! christmas mix, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 83 Together TV, 84 PBS America, 235 Al Jazeera Eng, plus 20 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 (65°)
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

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.

Monday, 6 June 2011

9:21 PM

Steve R: ITV1+1 is only provided for the "advertising regions", not for the "news regions". So, Anglia gets Meridian South for ITV1+1. Wales, gets ITV West on ITV1+1.

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Briantist's 38,906 posts GB flag
10:23 PM

Thanks for the input guys. Steve: no neighbours I know are freeview. But what is this signalling mode list? Something I clearly haven't seen.

Interestingly testing my main TV (Bravia in living room) simply still connected to sky dish I get ALL channels from SH! Connected to 32 element aerial, handheld, waving all over I still get ALL channels! So reception isn't the problem.

With the problem freeview scart box I've held it out of the top floor dormer window (top floor occupies roof space & loft is a crawl space so this is similar height and aspect I would have if mounted on rooftop). The problems persist. I am about to return the freeview box as I'm thinking it is at fault.....

I could go freesat with the existing dish but this scart mounted freeview box was so compact it was ideal for the wall mounted kitchen tv - it all stayed hidden behind the telly with no extra cables/brackets etc. Sigh!

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Rob's 5 posts GB flag
Tuesday, 7 June 2011

8:24 AM

Rob: If you TV is connected to a dish then then no signal whatsoever comes from a terrestrial transmitter, but from a satellite over Africa.

As I said, you need a ROOFTOP aerial for Freeview reception, and if you are "waving" your aerial around, you clearly don't have one.

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Briantist's 38,906 posts GB flag
10:08 AM

Briantist, Sky Freesat I understand, but my Sony is most definitely 100% a Freeview TV. I went up and physically disconnected the sky dish from the cable and still got excellent Freeview just via the run of the satellite cable! Yes, odd, but I swear it is the truth!

Disconnect the TV from the cable and I lose signal. When I connect the handheld terrestrial antenna I am getting all Freeview channels again (same EPG, same channels).

As for ROOFTOP, to elaborate on my out-of-window experience, I supported the aerial on a broomstick, out of the top (3rd)floor dormer window (a couple of metres below the roof apex) on the side of the house that faces SH. I got my compass out, calculated magnetic declination, and aligned the aerial. The aerial connects direct to the "kitchen" TV which I have moved to the top floor for testing. I only get MUX A & C.

No, Brian, it isn't ROOFTOP but as close as dammit for testing purposes. If you still feel it isn't adequate and I need a genuine rooftop aerial I'll drop it there. I'm not trying to be argumentative:)

My point about aerial waving was that if the handheld aerial (not deliberately waving) in the living room on the Sony TV can give great Freeview reception then my almost-rooftop arrangement with the same aerial out the top floor window should be more than adequate to at least test the scart freeview box on the "kitchen" TV.

I suppose this is getting a bit complicated so I'll drop it for now und give an update if I solve it.

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Rob's 5 posts FI flag
Mike Dimmick

2:44 PM

Rob: The reason we generally suggest a rooftop aerial is that it will be free of surrounding metal and hard surfaces, so will pick up fewer reflections, and is generally higher up and more likely to have clear line-of-sight to the transmitter, which produces the strongest signals.

However, at only 16km away the signals are likely to be more than strong enough for reliable reception, and indeed probably strong enough to overload the amplifier and cause intermodulation. I'd try out the attenuator.

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Mike Dimmick's 2,486 posts GB flag

4:21 PM

- TVs and boxes that do not support the 8k-mode | - independent free digital TV advice -
Rob - it's not one of the above is it?
If it used to work, but now does not, but other freeview does work from same aerial, maybe broken. How old? Return to seller for new one?
Have you tried a factory reset?
And/or a scan with no aerial, to clear out?

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Steve's 1,173 posts GB flag
Mike Dimmick

7:56 PM

Steve, Rob: I'd assumed that since Rob said the problem started 'a few' weeks ago, it was more likely to be a reception issue.

It's now 8 weeks since the second step and 10 since the BBC multiplex changed modes. If the problem started that long ago then yes, it could be a TV that does not support 8K mode - Mux 1/BBC A, 2/D3&4, B/BBC B/HD and D/ArqB have all switched into the 8K mode but Mux A/SDN and C/ArqA have not yet done so.

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Mike Dimmick's 2,486 posts GB flag

9:28 PM

Mike Dimmick: Sorry to be picky, but BBCB uses 32k, not 8k...

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Briantist's 38,906 posts GB flag
Wednesday, 8 June 2011

12:27 AM

Brian - According to the data above, BBCB uses "HD" where others use "2k" or "8k"

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Steve's 1,173 posts GB flag

7:23 AM

Steve: I have changed the descriptions to make it all clear.

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Briantist's 38,906 posts GB flag
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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.

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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