FCC 73.37 Revised as of October 1, 2007
Goto Year:2006 |
2008
Sec. 73.37 Applications for broadcast facilities, showing required.
(a) No application will be accepted for a new station if the proposed
operation would involve overlap of signal strength contours with any other
station as set forth below in this paragraph; and no application will be
accepted for a change of the facilities of an existing station if the
proposed change would involve such overlap where there is not already such
overlap between the stations involved:
Frequency separation (kHz) Contour of proposed station (classes B, C and D)
(mV/m) Contour of any other station (mV/m)
0 0.005
0.025
0.500 0.100 (Class A).
0.500(Other classes).
0.025 (All classes).
10 0.250
0.500 0.500(All classes).
0.250 (All classes).
20 5
5 5 (All classes).
5 (All classes).
30 25 25 (All classes).
(b) In determining overlap received, an application for a new Class C
station with daytime power of 250 watts, or greater, shall be considered on
the assumption that both the proposed operation and all existing Class C
stations operate with 250 watts and utilize non-directional antennas.
(c) If otherwise consistent with the public interest, an application
requesting an increase in the daytime power of an existing Class C station
on a local channel from 250 watts to a maximum of 1kW, or from 100 watts to
a maximum of 500 watts, may be granted notwithstanding overlap prohibited by
paragraph (a) of this section. In the case of a 100 watt Class C station
increasing daytime power, the provisions of this paragraph shall not be
construed to permit an increase in power to more than 500 watts, if
prohibited overlap would be involved, even if successive applications should
be tendered.
(d) In addition to demonstrating compliance with paragraphs (a), and, as
appropriate, (b), and (c) of this section, an application for a new AM
broadcast station, or for a major change (see Sec. 73.3571(a)(1)) in an
authorized AM broadcast station, as a condition for its acceptance, shall
make a satisfactory showing, if new or modified nighttime operation by a
Class B station is proposed, that objectionable interference will not result
to an authorized station, as determined pursuant to Sec. 73.182(1).
(e) An application for an authorization in the 1605–1705 kHz band which has
been selected through the petition process (See Sec. 73.30) is not required to
demonstrate compliance with paragraph (a), (b), (c), or (d) of this section.
Instead, the applicant need only comply with the terms of the allotment
authorization issued by the Commission in response to the earlier petition
for establishment of a station in the 1605–1705 kHz band. Within the
allotment authorization, the Commission will specify the assigned frequency
and the applicable technical requirements.
(f) Stations on 1580, 1590 and 1600 kHz. In addition to the rules governing
the authorization of facilities in the 535–1605 kHz band, stations on these
frequencies seeking facilities modifications must protect assignments in the
1610–1700 kHz band. Such protection shall be afforded in a manner which
considers the spacings that occur or exist between the subject station and a
station within the range 1605–1700 kHz. The spacings are the same as those
specified for stations in the frequency band 1610–1700 kHz or the current
separation distance, whichever is greater. Modifications that would result
in a spacing or spacings that fails to meet any of the separations must
include a showing that appropriate adjustment has been made to the radiated
signal which effectively results in a site-to-site radiation that is
equivalent to the radiation of a station with standard Model I facilities
(10 kW-D, 1 kW-N, non-DA, 90 degree antenna ht. & ground system) operating
in compliance with all of the above separation distances. In those cases
where that radiation equivalence value is already exceeded, a station may
continue to maintain, but not increase beyond that level.
Note 1: In the case of applications for changes in the facilities of AM
broadcast stations covered by this section, an application will be accepted
even though overlap of field strength contours as mentioned in this section
would occur with another station in an area where such overlap does not
already exist, if:
(1) The total area of overlap with that station would not be increased;
(2) There would be no net increase in the area of overlap with any other
station; and
(3) There would be created no area of overlap with any station with which
overlap does not now exist.
Note 2: The provisions of this section concerning prohibited overlap of
field strength contours will not apply where:
(1) The area of overlap lies entirely over sea water: or
(2) The only overlap involved would be that caused to a foreign station, in
which case the provisions of the applicable international agreement, as
identified in Sec. 73.1650, will apply. When overlap would be received from a
foreign station, the provisions of this section will apply, except where
there would be overlap with a foreign station with a frequency separation of
20 kHz, in which case the provisions of the international agreement will
apply in lieu of this section.
Note 3: In determining the number of “authorized” aural transmission
facilities in a given community, applications for that community in hearing
or otherwise having protected status under specified “cut-off” procedures
shall be considered as existing stations. In the event that there are two or
more mutually exclusive protected applications seeking authorization for the
proposed community it will be assumed that only one is “authorized.”
Note 4: A “transmission facility” for a community is a station licensed to
the community. Such a station provides a “transmission service” for that
community.
[ 56 FR 64858 , Dec. 12, 1991; 57 FR 43290 , Sept. 18, 1992]
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