Goto Section: 25.259 | 25.261 | Table of Contents
FCC 25.260
Revised as of October 1, 2011
Goto Year:2010 |
2012
§ 25.260 Time sharing between DoD meteorological satellite systems and
non-voice, non-geostationary satellite systems in the 400.15-401 MHz band.
(a) A non-voice, non-geostationary mobile-satellite service system
licensee ("NVNG licensee") time-sharing spectrum in the 400.15-401.0
MHz band shall not transmit signals into the "protection areas" of
Department of Defense ("DoD"). When calculating the protection areas
for a DoD satellite in the 400.15-401 MHz band, a NVNG licensee shall
use an earth station elevation angle of five degrees towards the DoD
satellite and will shut off its transmissions prior to the NVNG
licensee's service area, based on an elevation angle of zero degrees
towards the NVNG licensee's satellite, overlapping the DoD protection
area. A NVNG licensee is responsible for obtaining the necessary
ephemeris data. This information shall be updated system-wide at least
once per week. A NVNG licensee shall use an orbital propagator
algorithm with an accuracy equal to or greater than the NORAD
propagator used by DoD.
(b) A NVNG licensee time sharing spectrum in the 400.15-401 MHz band
shall establish a 24-hour per day contact person and telephone number
so that claims of harmful interference into DoD earth station users and
other operational issues can be reported and resolved expeditiously.
This contact information shall be made available to DoD or its
designee. If the National Telecommunications and Information
Administration ("NTIA") notifies the Commission that DoD is receiving
unacceptable interference from a NVNG licensee, the Commission will
require such NVNG licensee to terminate its interfering operations
immediately unless it demonstrates to the Commission's reasonable
satisfaction, and that of NTIA, that it is not responsible for causing
harmful interference into the worldwide DoD system. A NVNG licensee
assumes the risk of any liability or damage that it and its directors,
officers, employees, affiliates, agents and subcontractors may incur or
suffer in connection with an interruption of its non-voice,
non-geostationary mobile-satellite service, in whole or in part,
arising from or relating to its compliance or noncompliance with the
requirements of this paragraph (b). The Commission will not hesitate to
impose sanctions on a NVNG licensee time-sharing spectrum in the
400.15-401 MHz band with DoD, including monetary forfeitures and
license revocations, when appropriate.
(c) Each satellite in a NVNG licensee's system time-sharing spectrum
with DoD in the 400.15-401 MHz band shall automatically turn off and
cease satellite transmissions if, after 72 consecutive hours, no reset
signal is received from the NVNG licensee's gateway earth station and
verified by the satellite. All satellites in such NVNG licensee's
system shall be capable of instantaneous shutdown on any sub-band upon
command from such NVNG licensee's gateway earth station.
(d) Initially, a NVNG licensee time-sharing spectrum with DoD in the
400.15-401 MHz band shall be able to change the frequency on which its
system satellites are operating within 125 minutes of receiving
notification from a DoD required frequency change in the 400.15-401 MHz
band. Thereafter, when a NVNG licensee constructs additional gateway
earth stations located outside of North and South America, it shall use
its best efforts to decrease to 90 minutes the time required to
implement a DoD required frequency change. A NVNG licensee promptly
shall notify the Commission and NTIA of any decrease in the time it
requires to implement a DoD required frequency change.
(e) Once a NVNG licensee time-sharing spectrum with DoD in the
400.15-401 MHz band demonstrates to DoD that it is capable of
implementing a DoD required frequency change within the time required
under paragraph (d) of this section, thereafter, such NVNG licensee
shall demonstrate its capability to implement a DoD required frequency
change only once per year at the instruction of DoD. Such
demonstrations shall occur during off-peak hours, as determined by the
NVNG licensee, unless otherwise agreed by the NVNG licensee and DoD.
Such NVNG licensee will coordinate with DoD in establishing a plan for
such a demonstration. In the event that a NVNG licensee fails to
demonstrate to DoD that it is capable of implementing a DoD required
frequency change in accordance with a demonstration plan established by
DoD and the NVNG licensee, upon the Commission's receipt of a written
notification from NTIA describing such failure, the Commission shall
impose additional conditions or requirements on the NVNG licensee's
authorization as may be necessary to protect DoD operations in the
400.15-401 MHz downlink band until the Commission is notified by NTIA
that the NVNG licensee has successfully demonstrated its ability to
implement a DoD required frequency change. Such additional conditions
or requirements may include, but are not limited to, requiring such
NVNG licensee immediately to terminate its operations interfering with
the DoD system.
[ 62 FR 59296 , Nov. 3, 1997]
Goto Section: 25.259 | 25.261
Goto Year: 2010 |
2012
CiteFind - See documents on FCC website that
cite this rule
Want to support this service?
Thanks!
Report errors in
this rule. Since these rules are converted to HTML by machine, it's possible errors have been made. Please
help us improve these rules by clicking the Report FCC Rule Errors link to report an error.
hallikainen.com
Helping make public information public