[BC] TV Standards

[DANA PUOPOLO]

All I iknow is this....

At the NAB a few years ago, they had both systems there. 8-VSB required an
outdoor antenna, 1000 feet of Comscope coax and a preamp to make an excellent
picture. COFDM used a Radio Shack UHF bow tie antenna IN the booth!

At a private demonstration some time ago, Rep. Billy Tauzin was there. He
asked why one system (8-VSB) required two antennas pointed out the windows of
the room, while the other (COFDM) was using an antenna on the conference room
table.

Finally, COFDM works in moving cars; 8-VSB does not.

Spectrally, they BOTH fit in a 6 mHz channel. There's no difference there.

Power wise, 8-VSB be a bit more efficent then COFDM, but a COFDM transmitter
is much easier to align and maintain.

Not to mention that COFDM is the WORLDWIDE standard!  But then (of course)
Eureka is the worldwide standard for digital radio and here in the US we
mucked THAT one up too!

With regards to interlaced vs non interlaced, at the highest bit rates, our
DTV syatem is interlaced. Period.

-D



------ Original Message ------
Received: Tue, 18 Oct 2005 08:50:50 AM PDT
From: Robert Meuser <Robertm at broadcast.net>
To: Broadcast Radio Mailing List <broadcast at radiolists.net>
Subject: Re: [BC] TV Standards

The system is not inferior except in Dana's mind.

R

Barry Mishkind wrote:
> At 08:27 AM 10/18/2005, DANA PUOPOLO wrote
> 
>> Look at what the HDTV 'Grand Alliance' did. Because they refused to 
>> wait SIX
>> MONTHS, we got saddled with 8 VSB HDTV, which as about a quarter as 
>> robust as
>> COFDM, the system the rest of the world adopted.
>>
>> Because they couldn't wait, our HDTV system is INTERLACED, instead of 
>> being
>> progressive scanned (which would have made it compatible with computer
>> video).
>>
>> Why does America do this over and over and over?
> 
> 
>         You'll have to ask the NAB, I would think.
> 
>         Any TV folks here who can tell us if
>         it was merely six months that left the
>         US with an inferior system?
> 
> 
> 
> 
> _______________________________________________________________________
> Barry Mishkind     -       Tucson, AZ    -   520-296-3797
> 
> 
> 
> 
> 
> 
> 
> 
> 
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