Goto Section: 27.70 | 27.73 | Table of Contents
Revised as of October 1, 2010
Goto Year:2009 |
§ 27.72 Information sharing requirements.
This section requires WCS licensees in the 2305-2320 MHz and 2345-2360
MHz bands to share information regarding the location and operation of
base stations with Satellite Digital Audio Radio Service (SDARS)
licensees in the 2320-2345 MHz band. Section 25.263 of this chapter
requires SDARS licensees in the 2320-2345 MHz band to share information
regarding the location and operation of terrestrial repeaters with WCS
licensees in the 2305-2320 MHz and 2345-2360 MHz bands.
(a) Sites and frequency selections. WCS licensees must select base
station sites and frequencies, to the extent practicable, to minimize
the possibility of harmful interference to operations in the SDARS
2320-2345 MHz band.
(b) Prior notice periods. WCS licensees that intend to operate a base
station must, before commencing such operation, provide 10 business
days prior notice to all SDARS licensees. WCS licensees that intend to
modify an existing base station must, before commencing such modified
operation, provide 5 business days prior notice to all SDARS licensees.
For the purposes of this section, a business day is defined by
§ 1.4(e)(2) of this chapter.
(c) Contents of notice. (1) Notification must be written ( e.g.,
certified letter, fax, or e-mail) and include the licensee's name, and
the name, address, and telephone number of its coordination
representative, unless the SDARS licensee and all potentially affected
WCS licensees reach a mutual agreement to provide notification by some
other means. WCS licensees and SDARS licensees may establish such a
mutually agreeable alternative notification mechanism without prior
Commission approval, provided that they comply with all other
requirements of this section.
(2) Regardless of the notification method, it must specify relevant
technical details, including, at a minimum:
(i) The coordinates of the proposed base station to an accuracy of no
less than +-1 second latitude and longitude;
(ii) The proposed operating power(s), frequency band(s), and
(iii) The antenna center height above ground and ground elevation above
mean sea level, both to an accuracy of no less than +-1 meter;
(iv) The antenna gain pattern(s) in the azimuth and elevation planes
that include the peak of the main beam; and
(v) The antenna downtilt angle(s).
(3) A WCS licensee operating base stations must maintain an accurate
and up-to-date inventory of its base stations, including the
information set forth in § 27.72(c)(2), which shall be available upon
request by the Commission.
(d) Calculation of notice period. Notice periods are calculated from
the date of receipt by the licensee being notified. If notification is
by mail, the date of receipt is evidenced by the return receipt on
certified mail. If notification is by fax, the date of receipt is
evidenced by the notifying party's fax transmission confirmation log.
If notification is by e-mail, the date of receipt is evidenced by a
return e-mail receipt. If the SDARS licensee and all potentially
affected WCS licensees reach a mutual agreement to provide notification
by some other means, that agreement must specify the method for
determining the beginning of the notice period.
(e) Duty to cooperate. WCS licensees must cooperate in good faith in
the selection and use of new station sites and new frequencies to
reduce interference and make the most effective use of the authorized
facilities. WCS licensees should provide SDARS licensees as much lead
time as practicable to provide ample time to conduct analyses and
opportunity for prudent base station site selection prior to WCS
licensees entering into real estate and tower leasing or purchasing
agreements. WCS licensees must have sufficient operational flexibility
in their network design to implement one or more technical solutions to
remedy harmful interference. Licensees of stations suffering or causing
harmful interference must cooperate in good faith and resolve such
problems by mutually satisfactory arrangements. If the licensees are
unable to do so, the Wireless Telecommunications Bureau, in
consultation with the Office of Engineering and Technology and the
International Bureau, will consider the actions taken by the parties to
mitigate the risk of and remedy any alleged interference. In
determining the appropriate action, the Bureau will take into account
the nature and extent of the interference and act promptly to remedy
the interference. The Bureau may impose restrictions on WCS licensees,
including specifying the transmitter power, antenna height, or other
technical or operational measures to remedy the interference, and will
take into account previous measures by the licensees to mitigate the
risk of interference.
[ 75 FR 45071 , Aug. 2, 2010]
Goto Section: 27.70 | 27.73
Goto Year: 2009 |
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