Full Freeview on the Rowridge (Isle Of Wight, England) transmitter

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12:28 PM

Harri Ackone: The most likely and most ideal solution is probably to switch your from horizontal to vertical.

See the postings here from and in response to Brian Smith:

ITV 3 | ukfree.tv - independent free digital TV advice

As for why one might be unable to cope with the difference in levels where others will can, not all are the same. There are differing factors:

1. The sensitivity/tolerance of the components in the tuner.

2. The loss in the and connectors from the point that the signals are distributed.

You could try swapping your receivers from different aerial points, as a . Before you move any, observe the signal strength (where they give such information) and see if the signal is shown as being stronger at another outlet.

If the Sony fairs better in another room, then maybe a bit of attenuation will lower signal levels and provide a more stable result.

Harri Ackone
3:00 PM
Shanklin

Hi Dave Lindsay
Thanks for your feedbach it's very much appreciated but I don't think I'll be heading up to my to alter my to vertical especially as I get vertigo!!!
This afternoon the missing returned a classic case of sods law methinks.
Would also appreciate an explanation in simple terms how one achieves this.."a bit of attenuation will lower levels and provide a more stable result"
Regards

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Harri's: H's Freeview map H's terrain plot H's frequency data H's Freeview Detailed Coverage

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3:34 PM

Harri Ackone: I would like to clarify my last sentence of my earlier posting. There is no guarantee that attenuating will work. It is a try it and see sort of thing.

An attenuator reduces levels and an increases them. If you have an amplifier which splits the feed from your to different rooms and it has a variable control on it and it is accessible, then you should try reducing the level of amplification before introducing an attenuator.

An attenuator connects in line with the aerial lead. Variable ones are available for £3 or £4 online from souces such as eBay and Amazon. One such example is here:

1-20dB variable digital tv aerial signal attenuator | eBay

The problem is that the signals that you are having difficulty with are weaker horizontally than the Public Service (BBC, ITV1, C4, C5 etc). Vertically they are the same. So you have a marked difference in strength.

Resolution of a with signals works or it doesn't work. There is a threshold known as the "cliff edge". So a slight change in signal (which happens all the time) has meant that the are viewable again. Therefore, I wouldn't be surprised if it goes again.

Therefore, for reliable you need sufficient signal so that the natural slight changes do not leave you without enough (at some times).

Saturday, 19 May 2012

Sean Marshall
9:25 PM

Are we going to have fewer birds around the Solent after everyone's turned their aerials to vertical and they don't have anywhere to sit?

I was thinking of having mine turned just so I don't hear it shaking down the chimney when one of the fat pigeons lands.

Sean Marshall's 12 posts GB flag

Wednesday, 23 May 2012

Richard Hillier
8:26 PM

Hi I live on the Isle of Wight and would like to know when we get HD ?

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Thursday, 24 May 2012

Mark Fletcher

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1:47 PM
Halifax

Richard Hillier.Somewhere on the I.O.W.
On 21 already,from !

Mark Fletcher's 673 posts GB flag

Mark's: M's Freeview map M's terrain plot M's frequency data M's Freeview Detailed Coverage

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1:49 PM

Richard Hillier: As Mark says, HD are now available from . They came on air at the second stage of on 21st March.

Mark Fletcher

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1:57 PM
Halifax

Sean Marshall.
Yes if you're worried about obese pigeons dislodging your horizontally polarised down yer chimney then yes switch the polarity to vertical,also make sure your aerial is a group A type (tipped red) if you reside in a poor/marginal area within itself.One further advantage about vertical polarity on Rowridge is the more stable you will receive on the commercial multiplexes,SDN,ArqA & ArqB as it is broadcast on 200kw,compared to 50kw on horizontal polarity on the commercial multiplexes only which i stated above.
Yes go for vertical i say !

Mark Fletcher's 673 posts GB flag

Mark's: M's Freeview map M's terrain plot M's frequency data M's Freeview Detailed Coverage

Tuesday, 29 May 2012

Ted Hopper
10:32 AM
Winchester

Help,please.In Winchester, points to ,horizontal polarity,Sony Bravia tv.I can get all muxes except ArqA. All at high but missing one.Retuning by auto or manual methods give same result ie no trace of com5(ArqA.) Tried single from vcr as aerial loops through. no difference.Is attenuation worth trying?. Before I risk life and limb on the roof trying out vertical polarity or has anyone any suggestions. Problem is driving me bonkers.

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Ted's: T's Freeview map T's terrain plot T's frequency data T's Freeview Detailed Coverage

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10:52 AM

Ted Hopper: Attenuation is probably the only thing you can try.

There is the possibility that some of the problem is from another which attenuation won't fix and which polarising your vertically will probably.