bellotv, on Nov 24 2011, 07:09 PM, said:
You have asked so many questions and have been offered many possible answers.
Best way to find out whats wrong AT YOUR PARTICULAR PLACE is to get out an antenna installer that has a digital meter.
I'd asked the question but it hasn't been answered yet, but the reason I asked what I asked is, I don't think he actually has any problem.
His residence is reasonably close to the TX site (about 6.5km). ABC & SBS are on channels 37 & 38 respectively, NBN on channel 36 is also TX'd from the same tower/antenna array, so the likelihood of both ABC & SBS occasionally dropping out of late, would likely mean problems with NBN too, but no mention of that.
Being that close to the TX site but at a much lower altitude could also mean during the recent very hot weather, the signals are refracting over the top of him, but then he'd have troubles with all channels.
ABC & SBS digital TX's at Mt Sugarloaf are both fed off satellite using the same receiving dish & often drop out during very heavy rain (of which we've had some during storms over the past few weeks/recently), ABC seems to drop out more than SBS, but both do it. ABC & SBS analogue are TX'd from the adjacent site/tower & also fed off satellite, but using a different receiving dish & off a different satellite, & are usually ok if you switch back to analogue when the digital signals drop out.
When the ABC or SBS loses the sat. feed, you lose reception & get a no reception or no service message on the screen, the TX is still going & at full power during these times, just with no data info on it, so if you look at your signal levels on the TV you will have strong signal strength but very little or no signal quality, thus the reason I asked does it just pixelate or drop right off, & is it during high heat or rain periods.
If it's during high heat, a phased array will help capture those lower power scattered signals that aren't going over his head, if it's during heavy rain & the TX is dropping out, the Parks Radio Telescope Dish isn't going to help him.