Full Freeview on the Sandy Heath (Central Bedfordshire, England) transmitter
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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 
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Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
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.
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 (65°)
to BBC Cambridge region - 4 masts.
70% of BBC East (East) and BBC East (West) is shared output
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?
| 1965-80s | 1984-97 | 1997-98 | 1998-2011 | 2011-13 | 12 Feb 2020 | ||||
| VHF | A K T | K T | K T | W T | W T | ||||
| C6 | ITVwaves | ||||||||
| C21 | C4waves | C4waves | C4waves | +BBCB | BBCB | ||||
| C24 | ITVwaves | ITVwaves | ITVwaves | D3+4 | D3+4 | ||||
| C27 | BBC2waves | BBC2waves | BBC2waves | BBCA | BBCA | ||||
| C31 | BBC1waves | BBC1waves | BBC1waves | ||||||
| C32 | com7 | ||||||||
| C33 | SDN | ||||||||
| C34 | com8 | ||||||||
| C35 | _local | ||||||||
| C36 | ArqA | ||||||||
| C39 | C5waves | C5waves | |||||||
| C43 | _local | ||||||||
| C48 | ArqB | ArqB | |||||||
| C51tv_off | SDN | ||||||||
| C52tv_off | ArqA | ||||||||
| C55tv_off | com7tv_off | ||||||||
| C56tv_off | COM8tv_off |
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
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Wednesday, 30 March 2016
M
Mr reeden9:57 AM
Whys the hd channels at such a low power I can only get . 52% signal on ch 32 .34 .
ch52 is 78% all the rest are 79% .
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M
Mr reeden10:21 AM
My tv also breaks up around 4 to 6 times an hour only like 2 blips .
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M
MikeB3:47 PM
Mr reeden: Look at the difference in power between the different coms. And if your signal is breaking up, check which com its on - is the signal too high or too low?
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M
Mr reeden5:59 PM
Quality on mux ch 21 / ch 24 / ch 27 is 95% .
Ch32/34 is 55%
Ch48/51/52 is 87%
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Thursday, 31 March 2016
MikeP
7:46 AM
Trowbridge
7:46 AM
Trowbridge
Mr Reeden:
MikeB was asking for what strength your signals are on the different muxes, not the quality. It is the actual signal strength that can be the cause of your query, so that's the information needed, please?
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MikeP's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
M
Mr reeden12:27 PM
Signal strength is 70% on most muxes apart from Ch34 .
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M
MikeB5:56 PM
MikeP: Thanks Mike! 70% on most muxs is pretty much perfect, but look at the power output on C34 - if its really low, its explained by that. I get a similar thing with Waltham's Com 8 as well - the output is just really marginal at the moment.
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MikeB's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Friday, 1 April 2016
M
mark 12:00 PM
Hello I have 70% signal on all sd channels .
But mux ch 34.32 , 54%
I'd like to know why I can get almost perfect sd signal but poor hd signal .
Quality is around 76 to 85 % . SD channels
HD around 44 % to 64 % .
I've had this problem the whole time and so has all my neighbours I live in
The area NN4 .8 NN .
I would really appreciate some advice I mean the signal is ok it doesn't break up to much .
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M
mark 12:21 PM
Hd mux channel 21 . Is 75% Quality ##
So it's just the lower powered hd muxes with poor signal is there any plan to make these hd channels higher powered like the main sd channels if so I'm sure my signal would be perfect on all channels .
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