Full Freeview on the Sandy Heath (Central Bedfordshire, England) transmitter
Brian Butterworth first published this on - UK Free TV
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 problems
The BBC and Digital UK report there are no faults or engineering work on the Sandy Heath (Central Bedfordshire, England) transmitter._______
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, 13 April 2011
K
KMJ,Derby12:59 PM
Colin and Briantist: According to Digital UK C67 will be used by Mux ArqB (8k mode)until 14th September (when it changes to C48). C67 is then used by MuxC (2k mode) from 14th September till 23rd November 2011. MuxC/ArqA then changes to C52 in 8k mode.
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K
KMJ,Derby1:09 PM
John: dates for high power working are 14th September 2011 for Mux ArqB; 23rd November 2011 for ArqA and 2012 (date tbc) for SDN
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Lee1:36 PM
Sandy
I live in Sandy and getting a very weak signal on ch67 on all 3 tvs's but perfect on all the others.
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Lee's: mapL's Freeview map terrainL's terrain plot wavesL's frequency data L's Freeview Detailed Coverage
C
Colin2:18 PM
Milton Keynes
Thanks: Lee and KMJ, that confirms why I can't rx that mux. CH 67 was borderline on MUX B before DSO, for some reason it is below the threshold now. I got a few broken images earlier, confirming it is there, seems I will have to wait until later in the year for that mux.I have a high power external aerial but is locally blocked by trees just coming into leaf.
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Colin's: mapC's Freeview map terrainC's terrain plot wavesC's frequency data C's Freeview Detailed Coverage
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Mike Dimmick2:41 PM
Colin: ArqB is using a different mode than Mux B used to, which requires 3-4 dB more signal. If Mux B was marginal it's not surprising that ArqB is now not working.
The mode change is to increase capacity - that capacity is being used by Sky Sports 1 & 2, which the BBC was temporarily carrying on Mux B before today. All the channels had to come off Mux B as it's replaced by the HD mux. At some transmitters that switched last year, Mux D did not switch mode (to become ArqB) and that caused a lot of pain and confusion for existing and would-be Sky Sports subscribers, who were told they couldn't get the channels. BT Vision, TUTV, Sky Sports 1+2 and the Mendip transmitter | ukfree.tv - independent free digital TV advice
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I've patched the page to show the move of ArqB to C67, as per one version of the Digital UK documentation.
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John: You will also require a wideband aerial to receive these multiplexes, you will never receive them with a group A aerial, which you may have.
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J
Jase4:23 PM
Signal from ArqB/C67 is appalling today, perfectly fine before today's rescan, now almost unwatchable.
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Hubert5:03 PM
Luton
Today Wednesday I retuned my TV which has built in freeview and I received only the BBC channels none others and even the BBC channels would drop out or the picture would break up. This is off a roof aerial which gave me perfect analogue picture.So I connected it to a loft aerial which I also have and this gave me 55 channels and perfect picture quality. So do I need to change my roof aerial or retune in a couple of weeks. I also noticed that my roof aerial points towards London and my loft aerial points towards Bedford. Please can you help. Thanks.
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Hubert's: mapH's Freeview map terrainH's terrain plot wavesH's frequency data H's Freeview Detailed Coverage
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Lance5:10 PM
Ely
@Briantist
what are these two new Muxes you list? "NEW7" on Ch 49 and "NEW8" on Ch 23? Is this confirmed, and in what timeframe? Never heard these mentioned anywhere else but here.
Cheers
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Lance's: mapL's Freeview map terrainL's terrain plot wavesL's frequency data L's Freeview Detailed Coverage
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