FCC 73.809 Revised as of December 4, 2012
Goto Year:2011 |
§ 73.809 Interference protection to full service FM stations.
(a) If a full service commercial or NCE FM facility application is
filed subsequent to the filing of an LPFM station facility application,
such full service station is protected against any condition of
interference to the direct reception of its signal caused by such LPFM
station that operates on the same channel, first-adjacent channel or
intermediate frequency (IF) channel as or to such full service station,
provided that the interference is predicted to occur and actually
(1) The 3.16 mV/m (70 dBu) contour of such full service station;
(2) The community of license of such full service station; or
(3) Any area of the community of license of such full service station
that is predicted to receive at least a 1 mV/m (60 dBu) signal.
Predicted interference shall be calculated in accordance with the
ratios set forth in § 73.215 paragraphs (a)(1) and (a)(2). Intermediate
frequency (IF) channel interference overlap will be determined based
upon overlap of the 91 dBu F(50,50) contours of the FM and LPFM
stations. Actual interference will be considered to occur whenever
reception of a regularly used signal is impaired by the signal radiated
by the LPFM station.
(b) An LPFM station will be provided an opportunity to demonstrate in
connection with the processing of the commercial or NCE FM application
that interference as described in paragraph (a) of this section is
unlikely. If the LPFM station fails to so demonstrate, it will be
required to cease operations upon the commencement of program tests by
the commercial or NCE FM station.
(c) Complaints of actual interference by an LPFM station subject to
paragraphs (a) and (b) of this section must be served on the LPFM
licensee and the Federal Communications Commission, attention Audio
Services Division. The LPFM station must suspend operations within
twenty-four hours of the receipt of such complaint unless the
interference has been resolved to the satisfaction of the complainant
on the basis of suitable techniques. An LPFM station may only resume
operations at the direction of the Federal Communications Commission.
If the Commission determines that the complainant has refused to permit
the LPFM station to apply remedial techniques that demonstrably will
eliminate the interference without impairment of the original
reception, the licensee of the LPFM station is absolved of further
responsibility for the complaint.
(d) It shall be the responsibility of the licensee of an LPFM station
to correct any condition of interference that results from the
radiation of radio frequency energy outside its assigned channel. Upon
notice by the FCC to the station licensee or operator that such
interference is caused by spurious emissions of the station, operation
of the station shall be immediately suspended and not resumed until the
interference has been eliminated. However, short test transmissions may
be made during the period of suspended operation to check the efficacy
of remedial measures.
(e) In each instance where suspension of operation is required, the
licensee shall submit a full report to the FCC in Washington, DC, after
operation is resumed, containing details of the nature of the
interference, the source of the interfering signals, and the remedial
steps taken to eliminate the interference.
[ 65 FR 7640 , Feb. 15, 2000, as amended at 65 FR 67302 , Nov. 9, 2000; 73 FR 3216 , Jan. 17, 2008]
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