Re: Dynamic Multipath

"Bob Miller" <robmx@xxxxxxxxxxxxx> wrote in message
news:VG4tf.2144$M%4.2041@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> 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



I'm certainly glad we NEVER used cofdm here, as illustrated by pointers on
this webpage:

http://www.angelfire.com/tv2/dttaerials/

and that lousy system wasn't even HDTV, can you believe it?



.

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