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/ 09.07.2010 12:00AM
FCC Dismisses AM Station’s Objections to DTV Neighbors
WASHINGTON: The Video Division of the FCC’s Mass Media Bureau
has dismissed objections from Global Radio’s WNWR-AM in Philadelphia and
granted the applications from CBS station KYW-DT and ABC’s WPVI-TV for digital
television station licenses in that market.
The issue goes back to 1998, when the two TV stations wanted to build a tower
for their DTV channels about 1,500 feet from WNWR’s site.
Global asked the commission to ensure that the stations complied with rules for
protecting nearby directional AM radio stations against adverse effects from new
tower construction.
The TV stations got their CPs in 1998, and built the tower for their digital
facilities. A consulting engineer jointly selected by Global and the stations
performed measurements which showed the new tower hadn’t affected WNWR’s directional
array.
Global disagreed and in 2005
applied to tweak its AM license to reflect modified operating parameters. It
described the change as a “minor adjustment of the daytime directional antenna
pattern,” said the FCC, which added that WNWR didn’t attribute the change as
necessary to compensate for its array being affected by the new DTV facilities.
In its decision this week, the FCC found that Global failed to substantiate its
claim that WNWR’s directional array was hurt by the digital facilities constructed
in 1998. The agency said data collected in this proceeding was “inconclusive on
the question of adverse effect.”
The commission also referenced its relatively new “moment method modeling”
techniques for determining adverse affects of new construction on AM tower
arrays. It said if construction near the WNWR array is proposed again in the
future and if the parties can’t agree on costs for converting WNWR to the MoM
system, the agency may announce that that expense would “be borne equally by
WNWR and the next party that builds a new tower or materially changes an
existing tower.”--
from Radio World
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