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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 25/09/2023 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, 250 BBC Red Button, plus 15 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, 109 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! Movies Action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 69 HorrorXtra, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 91 WildEarth, 203 CITV, 208 Pop Player, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 16 others

 H -0.2dB
C36 (594.0MHz)289mDTG-8170,000W
Channel icons
 Smithsonian Channel, 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, 60 Drama +1, 70 Quest +1, 71 That's 60s, 74 Yesterday +1, 75 That's 70s, 233 Sky News, plus 9 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! romance, 73 HobbyMaker, 76 That's 80s, 82 Talking Pictures TV, 83 Together TV, 84 PBS America, 90 Together TV +1, 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 (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.

Saturday, 28 September 2013
10:27 PM

During the summer months I was able to receive all the free view channels without any problems.
Since the latest engineering work on Sandyheath, my television reception has been terrible. The signal strength remains very high at all times, but the signal quality is zero a lot of the time. The BBC mux is most affected, but the interference moves across the band.This sound like massive multi-path interference .What have they done to the Tx aerials or are they playing with the linarity of the PAs?

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NigelJ's 19 posts GB flag
NigelJ's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Sunday, 29 September 2013

8:28 AM

Sadly folks it's just interference due to foreign stations coming in strong. Happens on Digital signals just like it did on analogue terrestrial TV in the past when you used to see two pictures at once.
This type of interference usually happens when the barometer reads between 1025 and 1030mB; a little unusual to happen at 1010mB, the current pressure. As soon as the high pressure system moves away all should return to normal. However it looks to be with us for at least another week according to the forecast. If, like I, you also have Freesat that isn't affected. Mike.

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MikeG's 31 posts GB flag

9:03 PM

MikeG: Sometimes the culprits are UK transmitters in adjacent regions! A look at the William Hepburn's Tropospheric ducting forecast charts will give some indication of which transmitters could be sending signals way beyond the normal coverage area. The Rowridge transmitter is co-channel with the Sandy Heath PSB muxes and Emley Moor is co-channel for the COM muxes.

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KMJ,Derby's 1,811 posts GB flag
10:28 PM

We've had no BBC 1,2,ITV1 all day! Is this just rubbish reception stilk? NN7 northants.

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Mark's 1 post GB flag
Monday, 30 September 2013
9:07 AM

Mark: I am also in PE38 if it was not for the fact i can view via sky i would get rid of the TV, bbc spent the last week plugging the new Atlantis and low and behold that evening BBC1 signal is gone, the rest of the week its been ITV Ch4 that's been gone. As you say bring back analogue.

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G's 1 post GB flag
Robin Meyers
2:41 PM

We have had intermittent loss of signal on all channels since Friday 27th September. It is not only our problem but is affecting various apartment blocks on our site. (51.9506,-0.2748) 

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Robin Meyers's 2 posts GB flag
Robin Hitchin
2:46 PM

We have had problems with loss of signal intermittently affecting all channels since Friday 27th September.
It seems it is affecting many of the apartment blocks on our site so it's it is not within our apartment as first thought. Does anybody know the reason? (51.9506,-0.2748) 

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Robin Hitchin's 2 posts GB flag
Brian Greensides
4:24 PM

High Brian Greensides here in March Cambs.
I have been having all the above reported problems, even checked if my loft aerial had moved. It was ok (set at 205 degrees to pick up Sandy) or if the 8 way distriburtion amp had failed, no it hadn't. We have a freeview Humax box which allows me to monitor the signal strength and quality. At the worst times of interference or in some cases no program received at all, the sig strength was 80-85% and quality ranged from 0 to 45%. Following much hair pulling a friend suggested that the problem was possibly Waltham or Tachleston breaking through and to try removing the loft amp. I followed this advice yesterday and although the signal strength has reduced to 65-70% the quality is still 100% and so far reception has been without problems.
Hope this may help others
Regards Brian

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Brian Greensides's 17 posts GB flag

9:29 PM

Brian Greensides: Although I appreciate the point you are making but its impossible for Waltham (@ 41 miles) or Tacolneston (@ 45 miles) to be the cause of the problem you were experiencing as well as the fact that they operate on totally different channels anyway, and as Sandy is located @ 31 miles away I would doubt if it would be able to overload your receivers input either, and so purely for a test you should backtrack on what you have done by reconnecting the booster / splitter followed by checking if the quality has taken a dive, if it does then although your booster "may" have developed a fault (doubtful though!) its much more likely that the input to your booster is being affected by some powerful form of local interference such as from a newly installed mobile phone mast etc or even an upgrade that has been carried out on an existing one.

That is, unless your problem was just being caused by remnants of the the high pressure induced interference that has been recently plaguing numerous viewers in various areas! but no matter what, those two transmitters can be eliminated from the equation.

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jb38's 7,179 posts GB flag
Tuesday, 1 October 2013
10:04 AM

I have noticed that the signal returned yesterday morning, and that the problem was very wide spread. Why does it always say "no known problems" at the top of this page? Surely, if we were better informed, we would not be pulling our hair out trying to fix a problem that is not with our own equipment.

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Bill's 1 post GB flag
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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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