[BC] Digital coverage

[Scott Fybush]

>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