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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Wednesday, 13 April 2011
B
Bob8:00 PM
So the Brains have put 3 of the better channels: Yesterday, ITV4 & Film4 on C67, the weakest most useless MUX from Sandy heath - now that is what a call BRAINLESS! - It would have been far better to put them where the HD channels are (& delayed HD opening) - until the final frequency line up is on the air!
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A
Andy8:17 PM
Bedford
Hi. I re scanned/re-tumed last night when prompted. Free worked fine. Today I have the no signal symbol. (previously this occured on some days ,and we would watch analogue - usually by the next day we would have a signal.)
thank you for the help
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Andy's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
G
Gav9:14 PM
Retuned today and now lost viva and 4music plus some others
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R
Richard J10:37 PM
Anyone else noticing widescreen signalling issues on BBC HD channel (on Freeview from Sandy Heath)? It doesn't appear to have the correct flag and my Samsung 32C650 keeps switching to incorrect 4:3 ratio on this channel.
The other three HD channels are fine. Ovviously I could set the TV screen size to 16:9 rather than auto wide but that would mean stretched 4:3 broadcasts from ITV4 etc.
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M
Michael Stanley11:17 PM
Banbury
I have lost Yesterday and Film 4 since switchover
Aerial is on chimney
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Michael's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
J
jbm11:23 PM
Northampton, NN3 5??.
Signal Strenghts at TV:
PSB 1, 2, = 85%
PSB 3 N/A
MUX A, C = 60%
COM 6 = 50%
I spoke to DIGITALUK this afternoon, and they confirm that 67 is red flagged as being on lower than expected power, but wouldn't elaborate.
Since this was supposed to be the final stage of switch over on Sandy Heath, why are further retunings necessary later in the year? I want to instal interference filters, but can't on these power levels. Can we expect COM6 to be boosted before the end of the year?
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Thursday, 14 April 2011
P
Pob12:06 AM
Will the last 3 multiplexes be increased from 20,000w to 180,000w in time?
As my signal is too weak to receive anything at 20,000w, I can get the three on 180,000w perfectly now they've switched over
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J
John12:58 AM
Thanks for your reply
So Its not true then when all the switch over help scheme documents for over 70's says
-that theres no such thing as a digital ariel, and
- a small minority of homes will not be able to receive all 40+ channels.
Whats a multiplex ariel if its not a specific ariel you need to receive all the digital channels, and is peterborough considered a small minority in viewing terms?
My 78 year old mother puit off the offers of fixed price conversion on the understanding a new ariel was not needed
Would she be better off with freesat?
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Pob: As above, "The commercial multiplexes at Sandy Heath will remain on their pre-switchover channels and powers for a period after digital switchover. SDN will then temporarily move to channel 31 (at 20kW ERP) on 31 Aug 2011, before adopting its final allocation of channel 51 on 18th April 2012. Arqiva A will adopt its final allocation of channel 52 on 23 Nov 2011. Arqiva B will temporarily move to channel 67 (at 20kW ERP) at switchover and then it will adopt its final allocation of channel 48 on 14 Sept 2011. NOTE: D3&4 and HD use transitional S1 antenna until 27 June 2012. "
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Jase: The mode change may have effected your marginal signal. You may have to wait until it goes to full power on C48 on 14 Sept 2011.
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