Goto Section: 27.70 | 27.73 | Table of Contents
FCC 27.72
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 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 and
fixed stations (except fixed customer premises equipment) 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. WCS licensees are encouraged to develop separate coordination
agreements with SDARS licensees to facilitate efficient deployment of and
coexistence between each service. To the extent the provisions of any such
coordination agreement conflict with the requirements set forth herein, the
procedures established under a coordination agreement will control. WCS
licensees must maintain a copy of any coordination agreement with an SDARS
licensee in their station files and disclose it to prospective assignees,
transferees, or spectrum lessees and, upon request, to the Commission.
(a) Sites and frequency selections. WCS licensees must select base and fixed
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 or
fixed station must, before commencing such operation, provide 10 business
days prior notice to all SDARS licensees. WCS licensees that intend to
modify an existing 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.
(1) For modifications other than changes in location, a licensee may provide
notice within 24 hours after the modified operation if the modification does
not result in a predicted increase of the power flux density (PFD) at ground
level by more than 1 dB since the last advance notice was given. If a
demonstration is made by the SDARS licensee that such modifications may
cause harmful interference to SDARS receivers, WCS licensees will be
required to provide notice 5 business days in advance of additional station
modifications.
(2) WCS base and fixed stations operating below 2 watts equivalent
isotropically radiated power (EIRP) are exempt from the notice requirements
set forth in this paragraph.
(3) WCS and SDARS licensees may enter into agreements regarding alternative
notification procedures.
(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 or fixed stations to an accuracy of
no less than ±1 second latitude and longitude;
(ii) The proposed operating power(s), frequency band(s), and emission(s);
(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 or fixed stations must maintain an
accurate and up-to-date inventory of its 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, as defined in § 27.64(d),
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, as amended at 78 FR 9622 , Feb. 11, 2013]
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Goto Section: 27.70 | 27.73
Goto Year: 2014 |
2016
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