Goto Section: 25.140 | 25.143 | Table of Contents
Revised as of September 1, 2021
Goto Year:2020 |
§ 25.142 Licensing provisions for the non-voice, non-geostationary
(a) Space station application requirements. (1) Each application for a
space station system authorization in the non-voice, non-geostationary
mobile-satellite service shall describe in detail the proposed
non-voice, non-geostationary mobile-satellite system, setting forth all
pertinent technical and operational aspects of the system, and the
technical and legal qualifications of the applicant. In particular,
each application shall include the information specified in § 25.114.
Applicants must also file information demonstrating compliance with all
requirements of this section, and showing, based on existing system
information publicly available at the Commission at the time of filing,
that they will not cause unacceptable interference to any non-voice,
non-geostationary mobile-satellite service system authorized to
construct or operate.
(2) Applicants for a non-voice, non-geostationary Mobile-Satellite
Service space station license must identify the power flux density
produced at the Earth's surface by each space station of their system
in the 137-138 MHz and 400.15-401 MHz bands, to allow determination of
whether coordination with terrestrial services is required under any
applicable footnote to the Table of Frequency Allocations in § 2.106 of
this chapter. In addition, applicants must identify the measures they
would employ to protect the radio astronomy service in the 150.05-153
MHz and 406.1-410 MHz bands from harmful interference from unwanted
(3) Emission limitations. (i) Applicants in the non-voice,
non-geostationary mobile-satellite service shall show that their space
stations will not exceed the emission limitations of § 25.202(f) (1),
(2) and (3), as calculated for a fixed point on the Earth's surface in
the plane of the space station's orbit, considering the worst-case
frequency tolerance of all frequency determining components, and
maximum positive and negative Doppler shift of both the uplink and
downlink signals, taking into account the system design.
(ii) Applicants in the non-voice, non-geostationary mobile-satellite
service shall show that no signal received by their satellites from
sources outside of their system shall be retransmitted with a power
flux density level, in the worst 4 kHz, higher than the level described
by the applicants in paragraph (a)(2) of this section.
(b) Operating conditions. In order to ensure compatible operations with
authorized users in the frequency bands to be utilized for operations
in the non-voice, non-geostationary mobile-satellite service,
non-voice, non-geostationary mobile-satellite service systems must
operate in accordance with the conditions specified in this section.
(1) Service limitation. Voice services may not be provided.
(2) Coordination requirements with Federal government users.
(i) The frequency bands allocated for use by the non-voice,
non-geostationary mobile-satellite service are also authorized for use
by agencies of the Federal government. The Federal use of frequencies
in the non-voice, non-geostationary mobile-satellite service frequency
bands is under the regulatory jurisdiction of the National
Telecommunications and Information Administration (NTIA).
(ii) The Commission will use its existing procedures for liaison with
NTIA to reach agreement with respect to achieving compatible operations
between Federal Government users under the jurisdiction of NTIA and
non-voice, non-geostationary Mobile-Satellite Service systems
(including user transceivers subject to blanket licensing under
§ 25.115(d)) through the frequency assignment and coordination practices
established by NTIA and the Interdepartment Radio Advisory Committee
(IRAC). In order to facilitate such frequency assignment and
coordination, applicants shall provide the Commission with sufficient
information to evaluate electromagnetic compatibility with the Federal
government use of the spectrum, and any additional information
requested by the Commission. As part of the coordination process,
applicants shall show that they will not cause unacceptable
interference to authorized Federal government users, based upon
existing system information provided by the Government. The frequency
assignment and coordination of the satellite system with Federal
Government users shall be completed prior to grant of authorization.
(iii) The Commission shall also coordinate with NTIA/IRAC with regard
to the frequencies to be shared by those earth stations of non-voice,
non-geostationary mobile-satellite service systems that are not subject
to blanket licensing under § 25.115(d), and authorized Federal
government stations in the fixed and mobile services, through the
exchange of appropriate systems information.
(3) Coordination among non-voice, non-geostationary mobile-satellite
service systems. Applicants for authority to establish non-voice,
non-geostationary mobile-satellite service systems are encouraged to
coordinate their proposed frequency usage with existing permittees and
licensees in the non-voice, non-geostationary mobile-satellite service
whose facilities could be affected by the new proposal in terms of
frequency interference or restricted system capacity. All affected
applicants, permittees, and licensees shall, at the direction of the
Commission, cooperate fully and make every reasonable effort to resolve
technical problems and conflicts that may inhibit effective and
efficient use of the radio spectrum; however, the permittee or licensee
being coordinated with is not obligated to suggest changes or
re-engineer an applicant's proposal in cases involving conflicts.
(4) Safety and distress communications. Stations operating in the
non-voice, non-geostationary mobile-satellite service that are used to
comply with any statutory or regulatory equipment carriage requirements
may also be subject to the provisions of sections 321(b) and 359 of the
Communications Act of 1934, as amended. Licensees are advised that
these provisions give priority to radio communications or signals
relating to ships in distress and prohibit a charge for the
transmission of maritime distress calls and related traffic.
[ 58 FR 68060 , Dec. 23, 1993, as amended at 62 FR 5930 , Feb. 10, 1997;
62 FR 59295 , Nov. 3, 1997; 68 FR 51504 , Aug. 27, 2003; 78 FR 8422 , Feb.
6, 2013; 79 FR 8320 , Feb. 12, 2014; 81 FR 55333 , Aug. 18, 2016; 82 FR 59985 , Dec. 18, 2017]
Goto Section: 25.140 | 25.143
Goto Year: 2020 |
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