Goto Section: 73.825 | 73.840 | Table of Contents
FCC 73.827
Revised as of October 1, 2014
Goto Year:2013 |
2015
§ 73.827 Interference to the input signals of FM translator or FM booster
stations.
(a) Interference to the direct reception of the input signal of an FM
translator station. This subsection applies when an LPFM application
proposes to operate near an FM translator station, the FM translator
station is receiving its input signal off-air (either directly from the
primary station or from a translator station) and the LPFM application
proposes to operate on a third-adjacent channel to the station
delivering an input signal to the translator station. In these
circumstances, the LPFM station will not be authorized unless it is
located at least 2 km from the FM translator station. In addition, in
cases where an LPFM station is located within +- 30 degrees of the
azimuth between the FM translator station and its input signal, the
LPFM station will not be authorized unless it is located at least 10
kilometers from the FM translator station. The provisions of this
subsection will not apply if the LPFM applicant:
(1) Demonstrates that no actual interference will occur due to an
undesired (LPFM) to desired (station delivering signal to translator
station) ratio below 34 dB at such translator station's receive
antenna.
(2) Complies with the minimum LPFM/FM translator distance separation
calculated in accordance with the following formula: du = 133.5 antilog
[(Peu + Gru - Grd - Ed)/20], where du = the minimum allowed separation
in km, Peu = LPFM ERP in dBW, Gru = gain (dBd) of the FM translator
receive antenna in the direction of the LPFM site, Grd = gain (dBd) of
the FM translator receive antenna in the direction of the primary
station site, Ed = predicted field strength (dBu) of the primary
station at the translator site, or
(3) Reaches an agreement with the licensee of the FM translator
regarding an alternative technical solution.
Note to paragraph (a): LPFM applicants may assume that an FM translator
station's receive and transmit antennas are collocated.
(b) An authorized LPFM station will not be permitted to continue to
operate if an FM translator or FM booster station demonstrates that the
LPFM station is causing actual interference to the FM translator or FM
booster station's input signal, provided that the same input signal was
in use or proposed in an application filed with the Commission prior to
the release of the public notice announcing the dates for an LPFM
application filing window and has been continuously in use or proposed
since that time.
(c) Complaints of actual interference by an LPFM station subject to
paragraph (b) of this section must be served on the LPFM licensee and
the Federal Communications Commission, Attention: Audio Division, Media
Bureau. The LPFM station must suspend operations upon the receipt of
such complaint unless the interference has been resolved to the
satisfaction of the complainant on the basis of suitable techniques.
Short test transmissions may be made during the period of suspended
operations to check the efficacy of remedial measures. An LPFM station
may only resume full operation 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.
[ 78 FR 2106 , Jan. 9, 2013, as amended at 78 FR 67317 , Nov. 12, 2013]
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Goto Section: 73.825 | 73.840
Goto Year: 2013 |
2015
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