Goto Section: 73.825 | 73.840 | Table of Contents
FCC 73.827
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 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: 2014 |
2016
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