Any TV Aerial Experts Out There?

[cod man]

We've been having tv reception issues ever since we moved in in December and yesterday we raised the height of the aerial on the roof so it's now on a 10ft pole. We had already added an amplifier/splitter in the loft which had improved things a fair bit before hand and now Tv reception has improved again and we are getting 100% signal strength and 100% signal quality on the freeview BBC channels but only about 50% strength and 25ish% signal quality on ITV and other channels so things can get a bit blocky at times. We are using the Hannington tranmitter as is everyone else in the street judging by the direction of all the aerials.

So my questions are:
Why are we getting poor reception on some channels and not others even though the signals are (presumably!) coming from the same transmitter?
Is there anything we can do with the existing set up to improve things?
Is the situation likely to improve when the analogue signal is switched off?

Having been seriously ripped off in the past by an aerial company I'm trying to understand and sort this one out myself! It feels like I'm 90% there just the final 10% required to achieve tv viewing happiness in the houshold. Any thoughts on the subject would be gratefully received!

[Burrow01]

What type of aerial do you have, and what do your neighbours have?

[DaveR]

This is a great website:

http://www.aerialsandtv.com/index.html

Brilliant mix of sound technical sense with a liberal sprinkling of comedy.

If you can't find the information you're after then I'm sure the chap would be happy to advise in suitably no-nonsense(!) fashion if you contact him.

[cod man]

Mine is a wideband I think. It was bought and put up by a builder doing some work for us a couple of months ago. I'll have a look at that site a bit later thanks for your replies

[mybrainhurts]

DaveR said:

This is a great website:

http://www.aerialsandtv.com/index.html

Brilliant mix of sound technical sense with a liberal sprinkling of comedy.

If you can't find the information you're after then I'm sure the chap would be happy to advise in suitably no-nonsense(!) fashion if you contact him.

They're very helpful, even if you don't buy anything.

[.Mark]

Interesting post - your profile says South, where roughly? Our signal comes form the isle of Wight transmitter and get pretty much the same as you. Some channels are unwatchable.

[cod man]

We're in the Camberley area. Alternative transmitters are listed as Crystal Palace and Guildford, but we don't seem to be able to get them. Maybe there are hills or something in the way.

[FlossyThePig]

Two websites to explore are ukfree.tv and digitaluk. Between them they have detail of signal strength of analogue and digital transmitters.