Goto Section: 73.317 | 73.319 | Table of Contents
FCC 73.318
Revised as of October 1, 2008
Goto Year:2007 |
2009
Sec. 73.318 FM blanketing interference.
Areas adjacent to the transmitting antenna that receive a signal with a
strength of 115 dBu (562 mV/m) or greater will be assumed to be blanketed.
In determining the blanketed area, the 115 dBu contour is determined by
calculating the inverse distance field using the effective radiated power of
the maximum radiated lobe of the antenna without considering its vertical
radiation pattern or height. For directional antennas, the effective
radiated power in the pertinent bearing shall be used.
(a) The distance to the 115 dBu contour is determined using the following
equation:
D (in kilometers)=0.394√ P
D (in miles)=0.245√ P
Where P is the maximum effective radiated power (ERP), measured in
kilowatts, of the maximum radiated lobe.
(b) After January 1, 1985, permittees or licensees who either (1) commence
program tests, or (2) replace their antennas, or (3) request facilities
modifications and are issued a new construction permit must satisfy all
complaints of blanketing interference which are received by the station
during a one year period. The period begins with the commencement of program
tests, or commencement of programming utilizing the new antenna. Resolution
of complaints shall be at no cost to the complainant. These requirements
specifically do not include interference complaints resulting from
malfunctioning or mistuned receivers, improperly installed antenna systems,
or the use of high gain antennas or antenna booster amplifiers. Mobile
receivers and non-RF devices such as tape recorders or hi-fi amplifiers
(phonographs) are also excluded.
(c) A permittee collocating with one or more existing stations and beginning
program tests on or after January 1, 1985, must assume full financial
responsibility for remedying new complaints of blanketing interference for a
period of one year. Two or more permittees that concurrently collocate on or
after January 1, 1985, shall assume shared responsibility for remedying
blanketing complaints within the blanketing area unless an offending station
can be readily determined and then that station shall assume full financial
responsibility.
(d) Following the one year period of full financial obligation to satisfy
blanketing complaints, licensees shall provide technical information or
assistance to complainants on remedies for blanketing interference.
[ 28 FR 13623 , Dec. 14, 1963, as amended at 52 FR 25866 , July 9, 1987]
Goto Section: 73.317 | 73.319
Goto Year: 2007 |
2009
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