[BC] Digital coverage

[Paul Smith W4KNX]

IIRC, a class A station in Howell Michigan has filed reply comments along
with detailed engineering data in response to the IBOC proceeding 99-325,
wanting the new rules to mandate IBOC coverage to that of the class of
license the station is not the grandfathered status which would make the
superpowers turn their IBOC way down.

Paul Smith
W4KNX
Sarasota, FL
----- Original Message ----- 
From: "Scott Fybush" <scott at fybush.com>
To: "Broadcast Radio Mailing List" <broadcast at radiolists.net>
Sent: Monday, December 26, 2005 1:36 PM
Subject: Re: [BC] Digital coverage


>
> >If interference is found within the 60 dBu contour of KDLD, their
> >first recourse would be to the FCC who *might* order a reduction of
> >KYVB's IBOC subcarriers to a level commensurate with a standard
> >Class C allocation, or about 4.5 dB below the standard injection
> >level increasing the average D/U ratio to about 25 dB in the worst
> >case.
> >
> >Compared with some of the AM IBOC problems this is insignificant.
> >KDLD will lose some fringe coverage to the northwest, but I doubt
> >they will see an effect in their COL. I'm seeing worse situations
> >here in the Midwest between B's and A's, as well as A's and A's.
>
> Hasn't this been an issue with at least one of the Grand Rapids superpower
Bs?
>
> I seem to recall that one of them - WBCT 93.7? - was running its IBOC
> subcarriers substantially below the standard injection level to
> reduce interference to one of the nearby adjacent-channel stations.
>
> Without protection beyond standard class B contours, neither of those
> huge West Michigan signals (WBCT is 320 kW, WOOD-FM is 265 kW) seems
> to enjoy much in the way of added coverage these days. Too much
> nearby stuff on the dial. WOOD-FM, at 105.7, is even getting a
> second-adjacent move-in within its own market soon!
>
> s
>
>
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