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 |
Which companies have run the Channel 3 services in the Sandy Heath transmitter area
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Wednesday, 30 March 2011
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Dave Kimber11:56 AM
I retuned my Sony VTX-D800U STB this morning. I now find that BBC2 keeps switching after a few seconds to provide BBC1 programme, even though the box says it is still on programme 2. Selecting BBC2 by any means gives me a few secs of BBC2 then BBC1 again. If I leave the EPG on the screen, then BBC2 stays in the background. Surely the 2k to 8k switch would not do this?
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Dave Kimber1:26 PM
Update on my previous post: I have done a STB reset and now it stays on BBC2 OK.
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Mike Dimmick1:58 PM
Reading
Dave Kimber: there have been some reports of this on some Sony TVs up in Scotland. It may be a recurrence of a problem they had with Humax equipment a week or so ago. They seem to be using some new code for the 'Press Red' popup that appears during the news, or '(Red) SPORT' in sports programmes.
My hypothesis is that they've changed which MHEG program ID to run automatically when you select the channel, and the boxes still have a cached copy of a previous program with that ID that did something different (probably used for returning to the service you were watching when exiting from an interactive stream).
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Mike's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
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chrism2:17 PM
I excitedly retuned my TV this morning, and lo and behold BBC1/2/3 now have a nice strong reliable signal. Just one little thing - the data at the top of this page now lists BBC4 and the radio stations as being on both PSB1/C27 and MuxB/C67 (where they were before). And I definitely saw them coming up on C67 when tuning in. Is there another step here?
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Bob: Yes, this is a common situation at switchover - too much signal is as bad for digital reception as too little.
Remember to remove amplifiers first, before fitting attenuation devices.
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chrism: Yes, multiplex B is turned off on Wednesday 13th April 2011.
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General note - if you are retuning you must do a "first time installation" or do this - My Freeview box has no EPG, is blank on FIVE, ITV3, ITV4, ITV2+1, has no sound or the channel line up is wrong | ukfree.tv - independent free digital TV advice . An "add channels" will only confuse your receiver.
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Adam B3:13 PM
Dunstable
Brian, out of interest, why is MUX B not turned off at the first retune date, given that the new PSB1 mux carries everything that was on MUX B? MUX B is now just a subset of PSB1 that doesn't need to be there.
Cheers,
Adam.
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Adam's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
Adam B: Because anyone who hasn't retuned will no longer get the channels on it, which includes the two "hidden" Sky Sports channels.
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Adam B3:21 PM
Dunstable
Ahhh...Sky Sports channels. Forgot about them!
Cheers Brian!
Adam.
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Adam's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
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