Hi

I have been using my HTPC with Mediaportal for about a year now and having no major dramas just minor gripes which I am finally getting round to fixing. I get just the odd pixelation that is hardly noticable but in bad weather I get lockups in the picture.

So basically my signal is not 100% and I'm looking at ways to fix it. I currently have a new (well 1yr old now) Hills Optimax combination aerial (UHF and VHF http://www.hillssignalmaster.co.nz/pages/HILLS_COMBINATION.html ) and signal on all channels beisdes Prime is next to perfect on analogue TV. Prime has a few grains in it which I think is the key to my problems.
I am in Chch near Fitzgerald Ave and have a near perfect view of Sugarloaf bar a tree kinda in the way. I have been on the roof in the weekend and ensured my connections all the way to the TV are perfect and our house is only 1 yr old so cableing problems can probably be eliminated. So really I'm only picking the aerial.

What aerials do other Chchers have and how is reception particulary on analogue prime. Would an amplifier do any good or should I be looking at a stand alone UHF Aerial?