I have recently bought a Sony Bravia KDL46V5500, which has a integrated freeview tuner built-in.
I am currently able to receive TV1, TV2, TVNZ6, TVNZ7 in digital format clearly, without the signal breaking. These channels have a constant "High" rating on the signal level (which is full bar, with the green colour at the end) showing in the 'system information' menu of my TV.


However, I cannot recieve TV3, C4, and Prime in a clear, un-interupted signal like the channels listed before. These channels seem to fluctuate a lot in signal level ("low" to "good", orange to yellow region), and at the moment from two days worth of analysis, the signal seems to drop to an unwatchable at mid day, and sit at bearable watching levels at late night.
Is it heard of for signals to fluctuate due to the time of the day, if so what are the causes and remedies?


My UHF Aerial is pointing SSW ish while 2 of my my neighbour's aerial seems to be aiming SWW ish, almost a 20° difference. I live Howick (more specifically, Somerville), Auckland (I am close enough to Somerville Intermediate School that you can assume I reside there, for map referencing), and I am considering calling an Aerial Installer to take a look at it. My house is also relatively new (built late 1995).


Pictures of the direction my aerial is pointing at can be produced and uploaded upon request.

I've read a few guides and such, and it seems like I'm getting really good CH 29 reception (TVNZ), but a relatively weak CH 33 reception (Mediaworks), and absolutely no CH 45 reception (for SKY/Prime?)




Thank you to anyone who helps me with my dilemma in advance, most of the programs and movies I want to watch are generally on TV 3 =[.