[BC] Digital coverage

[Barry Mishkind]

Paul,

it was on page 14 of the June 2005 Radio Guide Magazine.

It is also in the archive of backissues: www.oldradio.com/bdr.htm

barry

At 01:37 PM 12/26/05, Paul Smith W4KNX wrote
>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!
> >



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Barry Mishkind     -       Tucson, AZ    -   520-296-3797