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Analogue and digital signal strength

The strength of an analogue signal is no guide to the strength of a digital signal

The strength of an analogue signal is no guide to the strength
published on UK Free TV

Many people ask why they can receive an OK analogue picture, but need to upgrade their aerial to get Freeview, or sometimes get perfect Freeview reception when the analogue picture is very poor.

The digital signals are currently broadcast at low power (this will change as switchover happens) to prevent interference with the existing analogue signals. Thankfully most Freeview boxes can work with these weak signals. The following list shows the strength of the digital signal compared to the analogue for the 80 Freeview transmitters.

Expr2 Aberdare: 15%
Angus: 2000%
Beacon Hill: 1%
Belmont: 1.43%
Bilsdale: 1.15%
Black Hill: 4%
Blaenplwyf: 1.66%
Bluebell Hill: 8.88%
Bressay: 10%
Brierley Hill: 1.22%
Bristol Kings Weston: 4.5%
Bromsgrove: 1550%
Brougher Mountain: 0.5%
Caldbeck: 0.82%
Caradon Hill: 0.76%
Carmel: 2%
Chatton: 4.16%
Chesterfield: 1.8%
Craigkelly: 2%
Crystal Palace: 2%
Darvel: 2%
Divis: 0.49%
Dover: 1%
Durris: 2%
Eitshal: 0.8%
Emley Moor: 0.93%
Fenham: 1%
Fenton: 0.5%
Guildford: 1%
Hannington: 4%
Hastings: 18.3%
Heathfield: 1.2%
Hemel Hempstead: 2%
Huntshaw Cross: 3.66%
Idle: 2%
Ilchester Crescent: 4%
Keelylang Hill: 1%
Keighley: 0.91%
Kilvey Hill: 3.83%
Knock More: 1%
Lancaster: 1.83%
Lark Stoke: 416.66%
Limavady: 0.8%
Llanddona: 1%
Malvern: 10%
Mendip: 1.83%
Midhurst: 1.25%
Moel-Y-Parc: 0.41%
Nottingham: 1.85%
Olivers Mount: 9.1%
Oxford: 1.6%
Pendle Forest: 18.2%
Plympton: 9.15%
Pontop Pike: 1.93%
Pontypool: 6%
Presely: 0.83%
Redruth: 1.85%
Reigate: 1500%
Ridge Hill: 2%
Rosemarkie: 10%
Rosneath: 2%
Rowridge: 4%
Rumster Forest: 1.33%
Saddleworth: 1.8%
Salisbury: 6.9%
Sandy Heath: 1.83%
Selkirk: 6%
Sheffield: 1%
Stockland Hill: 1%
Storeton: 2550%
Sudbury: 2.01%
Sutton Coldfield: 0.8%
Tacolneston: 2.66%
The Wrekin: 1%
Torosay: 0.62%
Tunbridge Wells: 1%
Waltham: 1.8%
Wenvoe: 1.16%
Whitehawk Hill: 3.67%
Winter Hill: 1.83%



Help with Freeview, aerials?
How do I get a test card with Freeview1
I would like to know if it is possible to receive UK terrestrial Freeview servic2
I have been told I would receive too much singal from my Freeview tansmitter as 3
Can my Freeview box receive more than one BBC and ITV region?4
Is it true that my 87 year old mother is entitled to a FREE upgrade when the ana5
[][][
In this section
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UK Digital switchover ends - Northern Ireland completes on 24th October 20122
The last day of analogue television in the UK - goodbye PAL3
2 days left of analogue television - goodbye teletext4
3 days of analogue to go - goodbye to NICAM 7285
Changes to Saorview frequencies and power levels, 24th October 20126

Comments
Sunday, 22 May 2011
J
Jerry Brett
8:04 PM
Sudbury

Mike & Steve - thanks for your comments. Haven't been on the old PC lately to check this site so didn't see your responses. Aerial and cable were replaced a couple of years ago when old aerial rotted away so I am assuming that damp isn't an issue. When I tried manually tuning the PVR it showed no signal strength on most of the channels it wasn't already using. The ones that did show signal strength wouldn't identify any channels. I don't get my signal from Sudbury despite the fact that the mast is only 5 or 6 miles away. Are you saying that the Sudbury transmitter is interfering with my reception? If so, would an attenuator help anyway? Sorry to be vague, the technicalities of TV reception are uncharted territory for me.

link to this comment
Jerry Brett's 7 posts GB
S
Steve
sentiment_satisfiedGold

9:12 PM
Wrexham

Jerry - Where DO you get your signal from?

link to this comment
Steve's 1,172 posts GB
Thursday, 26 May 2011
J
Jerry Brett
6:11 PM
Sudbury

Steve. Apparently the signal comes from Talconeston, a place I'd never heard of until I visited this website. The old analogue signal came from Sandy Heath.

link to this comment
Jerry Brett's 7 posts GB
Briantist
sentiment_very_satisfiedOwner

7:21 PM

Jerry Brett: You will only ever get a good service from the Sudbury transmitter, so you should move your aerial to point at that transmitter.

link to this comment
Briantist's 38,844 posts GB
Saturday, 28 May 2011
J
Jerry Brett
3:18 PM
Sudbury

Brian. I just had a look outside and my best guess is that the aerial is pointing to the Sudbury transmitter. I assumed that it was Talconeston because that is the transmitter that is highlighted on this website when I put in my postcode. I understand that Humax is broadcasting an update on 1st June. Could this solve my problems or are they just paving the way for switch over on 20th July?

link to this comment
Jerry Brett's 7 posts GB
Monday, 30 May 2011
Briantist
sentiment_very_satisfiedOwner

1:30 PM

Jerry Brett: The Humax upgrade is being provided throughout the whole of the UK, so is not specific to your switchover. It seems quite possible it will fix your problem. Let me know when you've installed it.

link to this comment
Briantist's 38,844 posts GB
Sunday, 5 June 2011
M
m.hoare
3:43 PM

when watching bbc1 or 2 i keep getting a mesage stating "low signal strenght"
why is this

link to this comment
m.hoare's 1 post GB
S
Steve
sentiment_satisfiedGold

6:29 PM

m.h it is probably because the signal strength is low that you get that message.

link to this comment
Steve's 1,172 posts GB
Monday, 6 June 2011
I
i spurdens
9:25 PM

i have to retune my tv every time i switch on

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i spurdens's 1 post GB
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