§  25.142   Licensing provisions for the non-voice, non-geostationary
Mobile-Satellite Service.

   (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
   emissions.

   (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.

   (4) [Reserved]

   (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.

   (c) [Reserved]

   [ 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]