[opendtv] Re: News: FCC Revises 700 MHz Band Plan and Service Rules
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Wed, 8 Aug 2007 12:58:35 -0400
John Shutt wrote:
> ATSC is still too fragile to provide emergency data
> coverage to first responders as well as DVB-T would have,
Are you including the potential use of A-VSB, MPH, or any of the other
umpteen schemes being proposed? Because if yes, then I'd like to see
something to back up this claim.
In principle, *if* first responders really are interested in broadcast
data, they could be provided with the appropriate receivers. And, as a
minumum, a few stations in every market could be equipped with the
proper exciter.
If you're really thinking in terms of emergency crews, then getting
close to the Shannon limit should be a priority. And anything that
implements turbo codes will have a leg up on the competition. A-VSB,
with diversity antenna, would be one good example.
So, no need to get apologetic.
Those services they're talking about sharing the 700 MHz spectrum seem
to be two-way comms, which of course are a completely different story.
Bert
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