Full Freeview on the Sandy Heath (Central Bedfordshire, England) transmitter
|Google Streetview||Google map||Bing map||Google Earth||52.130,-0.242 or 52°7'47"N 0°14'33"W||SG19 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 problemsThe BBC and Digital UK report there are no faults or engineering work on the Sandy Heath (Central Bedfordshire, England) transmitter.
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.
1 BBC One (SD) Cambridge, 2 BBC Two England, 9 BBC Four, 201 CBBC SD, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 250 BBC Red Button, plus 15 others 700 BBC Radio 1, 701 BBC Radio 1Xtra, 702 BBC Radio 2, 703 BBC Radio 3, 704 BBC Radio 4 (FM), 705 BBC Radio 5 Live, 706 BBC Radio 5 Live Sports Extra, 707 BBC Radio 6 Music, 708 BBC Radio 4 Extra, 709 BBC Asian Network, 710 BBC World Service, 719 BBC Norfolk (BBC local radio), 720 BBC Three Counties (BBC local radio), 722 BBC Cambridge (BBC local radio), 734 BBC Northampton (BBC local radio),
3 ITV (SD) (Anglia (West micro region)), 4 Channel 4 (SD) South ads, 5 Channel 5 (SD), 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 South ads, 18 More4, 24 ITV4, 33 ITV +1 (Anglia east), 45 Film4 +1,
86 More4 +1, 101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV HD (ITV Meridian Southampton), 104 Channel 4 HD South ads, 105 Channel 5 HD, 204 CBBC HD,
Spotlight TV, 12 Quest, 20 Drama, 21 5USA, 27 ITV2 +1, 30 5STAR, 34 ITV3 +1, 40 Movies4Men, 44 Channel 5 +1, 54 Paramount Network, 55 5SELECT, 58 ITVBe +1, 59 ITV4 +1, 63 Blaze, 66 CBS Reality, 70 Horror Channel, 76 Quest +1, 77 TCC, 80 Blaze +1, 203 CITV, 211 Ketchup TV, plus 21 others Television X, CCTV, CONNECT 4, Juwelo UK, 16 QVC, 85 Hochanda, 252 Kiss Chat & Date, 253 Proud Dating, 261 Racing UK, 263 SonLife, 264 VisionTV, 265 Planet Knowledge, 269 Arise News, 270 Loveworld, 670 ADULT Section (start), 675 ADULT PARTY, 679 ADULT Studio 66, 680 ADULT Xpanded2, 724 Capital FM London, 727 Absolute Radio, 728 Heart,
11 pick, 17 Really, 19 Dave, 28 E4 +1, 32 Sony Movie Channel, 38 Quest Red, 41 Food Network, 46 Challenge, 72 YourTV, 89 Together TV, 233 Sky News, plus 10 others 23 Create & Craft, 43 Gems TV, 49 TJC, 65 TBN UK, 673 ADULT smileTV3, 678 ADULT Xpanded TV, 723 talkSPORT, 730 RNIB Connect, 731 Classic FM, 732 LBC,
25 Yesterday, 29 4Music, 31 5Spike, 37 DMAX, 39 CBS Justice, 42 Home, 47 4seven, 71 CBS Drama, 73 Sewing Quarter, 79 Dave ja vu, 81 Talking Pictures TV, 235 AlJazeera English (SD), plus 16 others 22 Ideal World, 35 QVC Beauty, 36 QVC Style, 206 Pop, 672 ADULT smileTV2, 674 ADULT Babestn, 699 ADULT Section, 711 Hits Radio, 712 KISS FRESH, 713 Kiss FM, 714 KISSTORY, 715 Magic, 716 heat, 717 Kerrang!, 718 Smooth RadioUK, 725 Premier Radio,
Vintage TV, 57 5USA +1, 67 CBS Reality +1, 78 Quest Red +1, 92 Pick +1, 99 Smithsonian Channel HD, 107 BBC News HD, 108 Aljazeera English HD, 109 Channel 4+1 HD, 110 4seven HD, 113 RT HD, plus 2 others 74 Jewellery Maker, 733 Trans World Radio,
CBS Action +1, 56 5STAR +1, 64 Freesports, 83 NOW 80s, 84 Now 90s, 91 PBS America, 93 Together TV +1, 96 Forces TV, 106 BBC Four HD, 114 Quest HD, 205 CBeebies HD, plus 2 others 111 QVC HD, 112 QVC Beauty HD,
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
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?
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
How will the Sandy Heath (Central Bedfordshire, England) transmission frequencies change over time?
|1965-80s||1984-97||1997-98||1998-2011||2011-13||2013-18||2013-17||17 Jul 2018|
|VHF||A K T||K T||W||W T||W T||W T||W T|
tv_off Being removed from Freeview (for 5G use) by 30 June 2020 - 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?
|BBCA, D3+4, BBCB||(-7.4dB) 180kW|
|SDN, ARQA, ARQB||(-7.7dB) 170kW|
|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
MikeP: Hi Mike,
Since yesterday Com7 & 8 55,56 are really poor again, they were only stable for a day and one evening now their completely shot. DigitalUK reports variable reception for these now since July.
Before they moved frequency they were perfect like the rest.
My question is has the ERP changed for these since they were on channel 32 and 34 when I never had any issue with these muxes prior to the change. I see from Ofcom technical they are lower power compared to all the other muxes or is it combo of the higher frequency, lower power and me having to use a loft aerial because of strict local bylaws.
And my next question is if the ERP is still the same why are these muxes now so unstable after moving into the 700Mhz band when even SDN Com4 is on channel 51 714.004Mhz and as the others are rock solid on the lower frequencies?
I've even now have the aerial pointing slightly up which has improved strength but not stability I'm sure the roof tiles will be causing issues with deflection and a mass of trees out back.
I've found the exact compas bearing for the transmitter which has vastly improved signal and quality for the other muxes I don't have a problem with typically
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The clues I picked up on are that you have several trees nearby which I assume are in line with the signal path from the transmitter to your aerial. They are often a problem because of the leaves growing in spring and falling in autumn. They get wet as well and both those affect the way signal travel past the trees. Is it possible to site the aerial so it does not look through the tree canopies? It is usually better to mount the erial to look around them or over them.
The other is that you have a loft aerial but I am unaware that any planning authority is allowed to restrict your having a single aerial mounted externally (there are rules about multiple dishes and their size but you are allowed one external dish and one external aerial normally. I suggest you ask the local planners about that apparent 'rule'.) However, there may be a covenant applied to your property that may restrict the use of outdoor aerials - but that is not a planning matter but one of common law relating to ownership and use of land.property. If there is one it will be mentioned in the deeds of your house, which should be discussed with your lawyers.
I am not aware of any reduction/change in the radiated power of COM7 and COM8 from Sandy Heath, they appear to be the same as they were before the move. Because the frequencies used are now higher the signals are affected a little differently than before due to atmospheric absorption effects, etc.
Tiles do affect reception, especially when wet or covered with snow. It is also important to have the aerial as far away from water tanks and/or pipes as is possible and definitely not 'looking through' them. Loft insulation that has a metallic film included will also cause reception problems with an internally mounted aerial in the loft. The same is true for any layer immediately below the tiles as any metal between the aerial and the transmitter will cause problems.
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The BBC4 HD service is carried on the BBCB muliplex which is on Channel 21+. So you need to have a good wideband aerail that has good performaance at channel 21 as well as all the way through to channel 56 (COM8).
Put your post code and house number into the Digital UK Coverage Checker (http://www.digitaluk.co.uk/coveragechecker/) to get the correct bearing from you to the transmitter and then check that you aerial is the required wideband type as well as being correctly aimed at Sandy Heath transmitter (if that is indeed you best option transmitter).
I assume you have checked all the aerial cables and connections already, including unplugging any coaxial plugs/sockets and refitting them?
Please also check the signal strength shown by tyour TV set but DO NOT RETUNE. Let us know what the reported strengths are please?
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Iain: Are you watching ITV SD or ITV HD? Not all regions have a HD version of ITV available, so your box may be showing you the version corresponding to a neighbouring region (unhelpfully they are all just labelled as ITV HD so you can only really tell which version you're watching from the regional news).
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Nick: the clue to this problem I suspect can be found by looking at the signal condition. Most TV sets provide a means to see both the signal strength and the signal quality( relate to message error rate) as part of the tuning menu. I would bet that you will see a high signal strength while the signal quality is low to non existent. The cause is co-channel interference. When the UK is under high pressure the poor frequency reuse distance between transmitters proves to be inadequate to stop the transmitters interfering with each other.
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