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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, 21 July 2013

7:51 PM

post code is LU5

link to this comment's 25 posts GB flag
Monday, 22 July 2013
7:58 PM

jb38: I have checked the quality and its great , its the signal strength , it flutters from 0 to 90

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suzy,'s 2 posts GB flag
8:01 PM

sorry that should of been the other way round the strength is great, its the quality that is bad :(

link to this comment
suzy,'s 2 posts GB flag

9:22 PM

suzy, High signal strength but accompanied with erratic quality is in most cases caused by factors outwith a persons household, although a bad joint (corroded) where the coax is terminated into the aerial box can also result in these symptoms being displayed, and so to eliminate any possibility of this being responsible for your problem if at all possible (as I realise sometimes it isnt!) I would try and check with a neighbour to find out if they are also being similarly affected "on the same channels".

I would though check that COM4 and COM5 (the transmitters associated with the programme channels mentioned) are being received from Sandy and not Crystal Palace, Sandy's COM4 being on mux Ch51 and COM5 being on Ch52, checking being relatively easy to do if you are still using the Humax 9150T.

Should though you discover that your neighbours are also experiencing similar problems to yourself (which I suspect will apply) then unfortunately there really isn't anything you can do, as its just one of the pitfalls of digital reception when located in a less than ideal area for reception.

link to this comment
jb38's 7,179 posts GB flag
Tuesday, 23 July 2013
Michael Devine
2:12 PM
Milton Keynes

I live in Milton Keynes and have a roof aerial pointing to the Sandy Heath transmitter. Multiplexer channels 24 and 27 are fine; however, about 6 days ago we lost the stations on multiplexer channels 48, 50 and 51.

Can you help with this problem?

link to this comment
Michael Devine's 1 post GB flag
Michael's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage

7:43 PM

jb38: Hi Jb yes my neighbour's are also having the same problem :( yes am still using the humax and yes its all from Sandy transmitter, guess i should give up watching tv lol, as its always the stations i watch the most that are effected, am not into soaps etc so very seldon watch ch1 to ch5 which seem fine, humax says its the aerial ( ofcourse they would ) but ive had it all checked out its fine but doesnt solve my problem

link to this comment's 25 posts GB flag

7:47 PM

oh and ive checked the ch it says 59 ??? freq 778000 if thats a help

link to this comment
suzy's 25 posts GB flag

11:14 PM

suzy: If your Humax has stored C59 then that's COM5 from Oxford, programmes on this mux being Pick TV / Dave / Sky news etc.

This has likely happened during the last auto-tune you carried out, Sandy's C52 having been by-passed because it was being received at a very low level and where the next channel in line was stored which was Oxfords C59, Oxfords HD channel on C57 being ignored by your non HD box.

Even although the programmes on C59 are basically the same as C52 you should really be using C52, and so go into the channel edit facility and delete (11) Pick TV (also Dave 12) and follow this buy going into the tuning menu / manual tune and selecting C52, but "before" pressing search make a note of the strength / quality being indicated just in case its still very low, because if it is searching for the channel could well result in Pick TV & Dave not being seen in the programme guide.

The above method is really a short cut that sometimes works on Humax boxes, as by rights you should really scrub everything stored then manually tune in each of Sandy's mux channels one at a time.

Channels concerned being : 27 - 24 - 51 - 52 - 48.

As far as reception is concerned, as you have now managed to confirm that your neighbours are also being similarly affected then needless to say your problems are being caused by factors that are totally outwith your control, and so you have no real option but to wait and hope the situation does not take too long to settle down again.

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jb38's 7,179 posts GB flag
Wednesday, 24 July 2013

6:35 PM

jb38: i scrubbed the stations, did a retune with out the aerial in and cleared everything, ch52 wont pick up anything at all, probably why it keeps going to ch59 :( signal quality on ch52 zero strength is 65% on ch 59 the quality jumps from zero to 60 to up to 100 the strength is anything from 66 /67 % picture still breaks up and says things like this station is scrambled/blocked or no or bad signal

link to this comment
suzy's 25 posts GB flag

8:21 PM

suzy: The reception of Ch52 is known to be problematic in certain since early last year, and indeed is only received by myself located in the Stamford area at a very low and erratic level to the extent of being non existent for much of the time, and yet Sandy's other muxes are indicating a stable signal of around 80% strength / 100% quality.

Needless to say there is nothing that can be done about the situation, which by me having carried out signal checks at various points to the East and West of my area suggesting that the problem is caused a notch in the masts radiation pattern.

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jb38's 7,179 posts GB flag
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