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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.

Sunday, 25 December 2011
Charles Stuart

11:00 PM

I did a retune on one of my STBs today and noticed that the MUX on channel 52 is now 8K. Also, has the MUX on channel 48 increased in power? I ask because I can now receive it on my computer, which uses an indoor aerial in a bad location (the only location available). (52.3992,-0.7201) 

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Charles Stuart's 159 posts GB flag
Monday, 26 December 2011

12:27 AM

Charles Stuart: Both C52 and C48 are 8k mode and are transmitted at 170kW. That just leaves MuxA/SDN on C31 still using 2k mode at 20kW.

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KMJ,Derby's 1,811 posts GB flag
Thursday, 29 December 2011
1:34 PM

I have a problem with a matsui box ref DTR3 we were given and on first time of tuning and all fine on a hitachi flat screen, and now box wont even power up,someone told me that some transmitters will knock out older freeview boxes, is that correct??
many thanks
we are on sandy heath

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malcolm's 5 posts GB flag
Dave Lindsay

3:12 PM

malcolm: Some boxes are not designed to receive the latest (post-switchover) digital signals. Those signals do not stop the boxes from switching on; they just won't pick up any channels.

Google Matsui DTR3 and you will see postings on the same problem you have; the thing won't power up.

It seems to be a regular fault with this model's power supply and people report that it can be fixed with replacement of a couple of components. If you know someone who is a dab hand with a soldering iron, it could perhaps be repaired.

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Dave Lindsay's 5,724 posts GB flag
Sunday, 1 January 2012
7:11 PM

I Wonder if you can help, I bought a Digital Television for my auntie last Oct from Comet,
22in Samsung, She as had a problem with it since, its just 2 channels BBC1 & 2, If she presses number 1 on the remote twice she looses
the channel same goes for BBC2, THE PICTURE GOES TO BLACK & WHITE & FUZZY, I've Re-tune the TV and when its finished it tells me there is 2 Analogue channels, I think she is receiving from Sandy Heath, If all Transmitters are all digital then why is my auntie's tv still as 2 analogue channels.

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JOHN MOTTRAM's 1 post GB flag
JOHN's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
Dave Lindsay

7:30 PM

JOHN MOTTRAM: If your auntie is receiving from Sandy Heath, then there is no analogue to tune in and, as such, the analogue part of the TV is redundant.

The likely answer is that the TV is picking up an analogue signal from another transmitter that has yet to switchover to digital only. This would also explain the poor picture on those analogue channels.

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Dave Lindsay's 5,724 posts GB flag
Tuesday, 3 January 2012
12:17 PM

Is the power level on the Mux that provides channels 10& 38 going to be increased or is it at it's final level as I cannot get a decent signal strength any more. This is sine the last changes at the end of November.

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Paul's 2 posts GB flag
Dave Lindsay

12:35 PM

Paul: It is on low power until 27th June when it will be increased to its final power level which is the same as that of the commercial multiplexes now.

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Dave Lindsay's 5,724 posts GB flag
Thursday, 5 January 2012
Shane Brown
11:18 AM
Bishop's Stortford


We had a new digital aerial fitted to our roof in October. Along with most of the houses in the area this is pointed to Crystal Palace although your map suggests Sandy Heath is more appropriate.

We were receiving all the Freeview HD channels fine up till the middle of December - the HD signal quality was between 5 and 7 while the SD channels were 10.

From mid December the HD channel quality has dropped significantly. The signal is sometimes lost completely or very low with a high error rate (which is giving us pixellated pictures).

The same engineer came back out. He advised that the aerial was fine as was the signal strength. He suggested the problems may be due to increased interference from Sandy Heath (for the HD channels). When quizzed why it should be happening now he suggested it may be due to the leaves falling off the trees!?

We have not made any changes to the equipment.

The engineer suggested a stronger amplifier which was supposed to "hold" the picture better. However this is giving no improvement and now the signal is mostly rubbish.

All the other SD channels are fine so the only problem is with HD.

The engineers suggested that this may be a continuing problem up till the London switch-over in April.

My questions are as follows:
- is the explanation regarding the drop off is HD signal quality reasonable?
- is there anything that can be done to alleviate it (for example should I consider pointing the aerial to Sandy Heath)

Any assistance you can provide would be most gratefully received.


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Shane Brown's 1 post GB flag
Shane's: mapS's Freeview map terrainS's terrain plot wavesS's frequency data S's Freeview Detailed Coverage
12:16 PM

Hi Dave
Many thanks for this....looks like we will have to put up with it for a while yet before we get back to the quality of the past.

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Paul's 2 posts GB flag
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