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I know this has been asked before however my husband is having trouble with BBC channels. They start off being fine but after a couple of minutes the picture becomes mosaic-like.
He's tried retuning it and ends up with all the BBC channels coming from Wales, which isn't too bad but it's not what he wants.
What does he need to do to get a clear signal please?
The house is in the CH43 area not too far from Bidston Hill/ Upton Rd.

We have just a basic aerial that was installed a couple of weeks ago no Sky or Virgin etc.

Sounds like your aerial has moved. Check which way its pointing against your neighbours.

You should do an auto tune with the aerial removed from the TV, then do a manual tune for the North West transmitters.

Winter hill
HD - 54
Film 4 - 55
5* - 58
4,5,E4 - 59
Dave - 49
BBC - 50

Storeton
HD - 22
Film 4 - 29
5* - 23
4,5,E4 - 25
Dave - 26
BBC - 28

Of each of them, search one number, the. The equivalent from the other transmitter. Whichever ones gives the stronger signs you should add those channels. This will give you all the north west signals and non of the Welsh.

Your not missing anything on bbc anyway, and what you are missing, you have probs seen before as its all repeats.

I cancelled my tv licence as i watch everything on line, no probs with picture at all.

Thanks Smeeble, I'll give these instructions to my husband so he can fiddle with the telly. The bloke who fitted the aerial mentioned that because it's summer and the trees have leaves on them, it means the pic is often pixelated which sounds like a load of bollocks to me, but I could be wrong.

But, having lived abroad for 16 years we've not seen any of the BBC programmes so it's like new to us

If you have a digital TV, ensure the aerial is digital. If analog TV, ensure aerial is compatible. Have TV checked by an engineer. If all else fails, get SKY.

He was correct - tree leaves do absorb UHF signals. If the signal is marginal there might be enough signal during the winter with no leaves on the trees, but during summer (what, in Britain!?) the reduced signal won't be enough for adequate reception. Of course the crappy digital system we've been lumbered with is intolerant of anything but the strongest of signals. We didn't have anything like those problems with the old analogue system.

I'm in Oxton and my "Welsh" pointing aerial has to go through trees and still picks up OK.

You shouldn't have a problem in Oxton picking up Winter Hill, especially if your neighbours all have aerials pointing the same way.