[opendtv] Re: Martin: 15% of Stations Face Smaller DTV-Coverage Areas
- From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Thu, 18 Sep 2008 10:18:29 -0700
And, how much is related to interference from existing analog stations?
John Willkie
-----Mensaje original-----
De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En
nombre de John Shutt
Enviado el: Thursday, September 18, 2008 4:24 AM
Para: opendtv@xxxxxxxxxxxxx
Asunto: [opendtv] Re: Martin: 15% of Stations Face Smaller DTV-Coverage
Areas
How much of this is due to co- or adjacent channel interference? How much
is due to the predicted UHF equivalent coverage power level not replicating
a low VHF station's NTSC pattern? How much is due to receiver front end
desensitizing from a nearby high power UHF, preventing reception of a
further UHF (a problem my station is already facing)? How much of this is
due to the very large disparity in FCC authorized UHF power levels of
different stations in the same market? Two VHF stations in our market are
authorized 1 MW ERP, while the others are authorized in the neighborhood of
50KW ERP.
What I never found out was are all of the Wilimgton stations on their final
channels at final power, and are the stations in adjacent markets also on
final frequencies? Three stations in our market are out-of-core, and as a
result we're not sure what our final coverage will be when we light up for
the first time on channel 40 on 18 Feb.
John
----- Original Message -----
From: "Dale Kelly" <dalekelly@xxxxxxxxxxx>
> Martin said that perhaps 15% of the nation's TV
> stations might have carriage shrink "in a significant way," similar to the
> changes in WECT's coverage area.
> He added that the effect of that changed contour was the key lesson
> learned
> from Wilmington. He said FCC engineers were working on identifying all of
> those markets -- he said it would take a few weeks -- and the FCC would
> address remedies on a case-by-case basis, calling it the "highest
> priority"
> for the commission. Subcommittee chairman Ed Markey (D-Mass.) told Martin
> the issue needed resolving "very soon," at least by communicating the fact
> to viewers who might lose their signals do to coverage-area changes.
>
> Broadcasting & Cable
>
>
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