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, 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, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 South ads, 18 More4, 25 ITV4, 29 E4 +1, 34 ITV +1 (Anglia east),
72 Shopping Quarter , 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, plus 1 others 65 TBN UK,
CCXTV, 12 Quest, 20 Drama, 21 5USA, 28 ITV2 +1, 31 5STAR, 32 Paramount Network, 41 Sony Movies Action, 45 Channel 5 +1, 55 5SELECT, 57 ITVBe +1, 58 ITV3 +1, 59 ITV4 +1, 63 Blaze, 66 CBS Reality, 68 Horror Channel, 73 Drama +1, 77 TCC, 80 Blaze +1, 203 CITV, 211 Ketchup, plus 15 others 16 QVC, 50 TJC, 95 Create & Craft, 252 Kiss Chat & Date, 253 Proud Dating, 261 Racing TV, 263 SonLife, 264 VisionTV, 265 On Demand 365, 269 Arise News, 670 ADULT Section (start), 680 ADULT Xpanded2, 724 Capital FM London, 727 Absolute Radio, 728 Heart 106.2 London,
11 Sky Arts, 17 Really, 19 Dave, 30 4Music, 35 pick, 39 Quest Red, 42 Food Network, 46 Film4 +1, 47 Challenge, 48 4seven, 56 Smithsonian Channel, 69 Quest +1, 74 Yesterday +1, 82 Together TV, 233 Sky News, plus 9 others 44 Gems TV, 85 Hochanda, 673 ADULT smileTV3, 678 Xpanded TV, 723 talkSPORT, 730 RNIB Connect, 731 Classic FM, 732 LBC, 733 Trans World Radio,
23 Dave ja vu, 26 Yesterday, 33 Sony Movies, 38 DMAX, 40 CBS Justice, 43 HGTV, 67 CBS Drama, 81 Talking Pictures TV, 84 PBS America, 234 RT, 235 Aljazeera English, plus 18 others ADULT smileTV2, 22 Ideal World, 36 QVC Beauty, 37 QVC Style, 71 Jewellery Maker, 206 Pop, 674 ADULT Babestn, 679 ADULT Studio 66, 699 ADULT Section, 711 Hits Radio, 712 KISS FRESH, 713 KISS, 714 KISSTORY, 715 Magic, 716 Greatest Hits Radio, 717 Kerrang!, 718 Smooth Radio, 725 Premier Radio,
Merit, 64 FreeSports HD, 70 Quest Red +1, 76 NOW 80s, 83 Together TV +1, 86 More4 +1, 87 PBS America +1, 96 Forces TV, 106 BBC Four HD, 107 BBC News HD, 113 RT 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||12 Feb 2020|
|VHF||A K T||K T||K T||W T||W T|
tv_off Being removed from Freeview (for 5G use) after November 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
For some time I have been experiencing intermittent poor quality (with adequate signal strength) on the two DTG-3 muxes PSB1 and 2. Interestingly I have previously eliminated a source of domestic interference which was affecting PSB2 only. All the other muxes are perfect. This is more of a minor irritation than a serious problem but obviously affects the radio channels, and SD cricket on channel 4!
I am wondering whether these muxes are inherently more prone to interference for some reason, and if so what the cause could be.
Thanks in anticipation.
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There's no particular reason why PSB1 or PSB2 should be more prone to interference. Make sure that you don't have any HDMI leads running close to aerial or flyleads cables, especially when the aerial or flylead cable isn't high quality double screened cable, as HDMI is known to sometimes cause interference.
The transmitter isn't currently listed for Planned Engineering, and hasn't been in recent weeks and I can't find any listed faults. There has been some (by its nature) very variable "Tropospheric Ducting" in some more recent weeks (none at present), it can last seconds, minutes, hours and can affect only one or several frequencies/multiplexes. See https://www.radioandtvhelp.co.uk/help-guides/television/effect-of-tropospheric-ducting-on-freeview for a simplistic explanation. It can occur more commonly with high pressure (but not all the time). Don't retune in such circumstances as this often just clears correct tuning.
It might be worth just checking that you are correctly tuned Sandy Heath's channels are C27, C24, C21, C33, C36, C48, C55 in the order PSBs1-3, COMs4-7. Also note C35 is a Local multiplex for Cambridge from the nearby Madingley transmitter, which you may or may not receive depending on your location.
If you live nearer the coast (you haven't given a full postcode) you might be more vulnerable to interference from the continent in tropo conditions.
Also I would check that your aerial seems intact and pointing in the correct direction and that your downlead looks undamaged (especially if it is old). Also check all your coax plugs, connections, flyleads etc, unplug connectors check for corrosion or other problems and reconnect them. Flyleads are a common problem, try swapping/changing them. Problematic connections, water ingress etc. can seem to affect reception of just an individual or several multiplexes.
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Chris.SE: Many thanks. Too soon to be sure but the cabling around the main set could be an issue. After a fiddle about to achieve as much separation as possible it is running at 100 quality on channel 27. We recently overhauled our roof set up as a new set upstairs was struggling. Weirdly the increase in power form Sandy Heath in recent years had caught us out! It's been a bit of a learning curve over the years. Basically the loft Ariel was fine when I took out a head amplifier which used to be needed. Fitted a new distributor and things seem generally very good. When we first got a digi box many years ago we eventually realised that our old roof aerial was the wrong one but picked up some signal from Waltham 180 degrees out so have to watch out for that! PE7 3TZ btw.
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In the analogue days, Waltham was Aerial Group C/D and Sandy Heath was Group A until Channel 5 came along when Waltham became Group E and Sandy Heath Group K. When low power DTV first started before DSO, a Wideband aerial became necessary at both transmitters to get all the digital and analogue channels and quite likely some amplification was needed in some areas to get the low power digital.
At DSO, the digital power increased significantly and so "too much signal" causing front end overload would have become an issue for some!
You are predicted to get very good/excellent reception from Sandy Heath, whereas Waltham is predicted to be weaker and (quite) variable. At your location Sandy Heath is at bearing 171 degrees - 9 degrees E of due S, Waltham is NE, 315 degrees, and as you've previously discovered reception off aerial rear side-lobes is quite possible (especially with amplification).
I'm glad rearranging the cabling looks as though it could have resolved the issue. Post back if you need further help or suggestions.
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