Dynamic Multipath
- From: Bob Miller <robmx@xxxxxxxxxxxxx>
- Date: Fri, 30 Dec 2005 06:44:05 GMT
Here is a poster on AVSForum who tells of dynamic multipath problems. Since an airplane can fly over virtually any spot in the US then anyone can suffer from this unnecessary interference. Why does the US still have this junk 8-VSB? Congress and the FCC both knew of this problem in 1998 and ignored it.
http://www.avsforum.com/avs-vb/showthread.php?p=6807808&&#post6807808
"I can answer that one.
I live between Dulles airport in Northern Virginia and the broadcast towers in DC and Maryland. My Winegard UHF/VHF rooftop antenna works very well. The problem that I have is that every time and airplane flies between my antenna and the broadcast towers, I get multipath interference and my picture pixellates for a second or two and then comes back. Mind you, I have to be able to see and hear the planes for this to happen.
If I lived on the other side of the flightpath, there would be no problem.
The same thing happens on analog broadcasts, except the picture will wobble instead of pixellate. "
Of course this could happen with someone else because of traffic. Traffic is widespread in the US also.
And even if you can avoid the traffic by putting the antenna ever higher, that cost, worry and annoyance is also a problem. It would be better to have and have had a system that works even IN traffic like COFDM.
Bob Miller .
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