FCC Record, Volume 27, No. 7, Pages 5674 to 6652, May 23 - June 15, 2012 Page: 6,619
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(c) Aeronautical mobile operations are permitted on a secondary, non-interference basis
to 4.9 GHz terrestrial services under the following restrictions. Altitude may not exceed
457 meters (1500 feet) above ground. Licensees may use only low power devices as
defined by 90.1215 for aeronautical mobile use. All applications for aeronautical
operation require prior Commission approval. The applicant shall provide a description
of proposed operation to demonstrate that the proposed aeronautical mobile operations
protect radio astronomy operations and 4.9 GHz terrestrial services from interference.
Applicants shall submit their applications to their respective regional planning committee
or the National Association of Regional Planning Committees for coordination. The
applicant shall certify that it has served a copy of the application to all radio astronomy
observatories listed in the Table of Frequency Allocations, 2.106 footnote US311 of
this chapter, whose geographic boundaries fall within [distance to be determined]
kilometers of the edge of the proposed aeronautical operation. The Commission will
coordinate all applications for aeronautical mobile operation with the National
Telecommunications and Information Administration. The Commission has the
discretion to impose special conditions and operating restrictions on individual licenses
as necessary to reduce risk of interference to radio astronomy operations and 4.9 GHz
terrestrial services.
4. Section 90.1209 is revised to read as follows:
90.1209 Policies governing the use of the 4940-4990 MHz band.
(b) Each application for a new frequency assignment or for a change in existing facilities
as listed in 1.929(c)(4) must be submitted through the applicable regional planning
committee (RPC) for coordination. In areas without active RPCs, all licensees shall
cooperate in the selection and use of channels in order to reduce interference and make
the most effective use of the authorized facilities. A database identifying the locations of
registered stations will be available at http://wireless.fcc.gov/uls. RPCs and licensees
should examine this database before seeking station authorization, and make every effort
to ensure that their fixed and base stations operate at a location, and with technical
parameters, that will minimize the potential to cause and receive interference. Point-to-
point stations must employ either horizontal or vertical polarization; point-to-point
unpolarized transmissions are prohibited. Licensees of stations suffering or causing
harmful interference are expected to cooperate and resolve this problem by mutually
satisfactory arrangements. If licensees are unable to do so, the Commission may impose
restrictions including specifying the transmitter power, antenna height, or area or hours of
operation of the stations concerned. Further, the Commission may prohibit the use of any
4.9 GHz channel under a system license at a given geographical location when, in the
judgment of the Commission, its use in that location is not in the public interest.
5. Section 90.1213 is revised to read as follows:
90.1213 Band plan.
(a) The following channel center frequencies are permitted to be aggregated for channel
bandwidths of 5, 10, 15 or 20 MHz as described in paragraph (b) of this section. Channel
numbers I through 5 and 14 through 18 are 1 MHz bandwidth channels and channel6619
Federal Communications Commission
FCC 12-61
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United States. Federal Communications Commission. FCC Record, Volume 27, No. 7, Pages 5674 to 6652, May 23 - June 15, 2012, book, June 2012; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc111171/m1/962/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.