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.
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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 |
Local transmitter maps
Sandy Heath Freeview Sandy Heath DAB Sandy Heath TV region BBC Cambridge Anglia (West micro region)Which companies have run the Channel 3 services in the Sandy Heath transmitter area
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Monday, 30 December 2019
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Ken Newstead1:23 PM
Buntingford
My neighbour and I both live in SG9 0BA postcode and had some signal loss yesterday and total loss this morning at around 1 pm. At 13:15 pm we were both OK. Has there been any work on the Sandy Heath transmitter that would have caused this?
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Ken's: mapK's Freeview map terrainK's terrain plot wavesK's frequency data K's Freeview Detailed Coverage
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Ken Newstead1:29 PM
Buntingford
Further to my last post for SG9 0BA postcode, at 13:25 pm there is again just a "Weak or No Signal" message.
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Ken's: mapK's Freeview map terrainK's terrain plot wavesK's frequency data K's Freeview Detailed Coverage
No signal at all in nn36pf area
Keeps going off air and picture break up on all channels.
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C
Chris.SE1:51 PM
Jason Drake, Rosemary, Alan Carter, Carol Richards, Ken Newstead, Liam Erop & others.
Please read my long post 1:00AM last night on p217 here.
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Mark Hank3:09 PM
Milton Keynes
Postcode MK4 2JF..
Unable to receive any com8 channels eg Freesports 64... Any known issues as all other channels ok and about 93%...
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Mark's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
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Brian Greensides3:45 PM
As back up to my claim of very intermittent freeview reception please be aware that I have 3 independent tv sets fed from 2 separate aerials. Could someone from Sandyheath freeview please look at this web site:-
Freeview TV signal down for people across the whole of Cambridgeshire - Cambridgeshire Live
Thank you Brian Greensides
30/12/2019 15:44 hours
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Chris.SE10:40 PM
Brian Greensides: Mark Hank: evelyn o'rourke:
I'm surprised that none of you read my previous post here and so read my long post 1:00AM last night on p217 here.
In case you have trouble going back a page, here is a direct link Sandy Heath (Central Bedfordshire, England) Full Freeview transmitter | free and easy
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Tuesday, 31 December 2019
C
Charlie B4:56 AM
all day 30/12 and into the morning of 31/12 I am having signal problems in the PE15 are. Sandy Heath is our nearest transmitter. Many stations that I can normally watch including BBC channels are not coming through and reporting "no signal"
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Chris.SE5:21 AM
Charlie B:
Have you not read the previous posts here? Do you really expect people to repeat what has already been stated?
Here's a link to the post with the primary information - Sandy Heath (Central Bedfordshire, England) Full Freeview transmitter | free and easy
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Wednesday, 1 January 2020
N
Nigel Johnson6:17 PM
Chris.SE: can we assume that scheduled moves of sandy heath channel allocations will be postponed if they conincide with unusual tropospheric radio propagation. Or are we to see messages to return at a time when the new frequency allocation will be blocked by interference.
One must wonder why the mobile phone companies are so keen to gain access to the higher Freeview TV frequencies, when they are subject to tropospheric RF ducting and scattering. Something that is going to become even more common due to the effects of global warming. Are the mobile phone operators not concerned about the disruption to their services when they attempt to use these frequencies in the mobile network backbone.
While the 5G is not directly responsible for the current free view interference, the sell off of the high frequencies in the band, must have had an impact on channel reuse distance planning, squeezing the free view channels closer together and thus reducing the available frequency reuse allocation distance, making co-channel interference more likely.
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