Sec. 95.42  Considerations in the Puerto Rico Coordination Zone.

    Any applicant for a new base or fixed station authorization to be 
located on the islands of Puerto Rico, Desecheo, Mona, Vieques, and 
Culebra, or for a modification of an existing authorization which would 
change the frequency, power, antenna height, directivity, or location of 
a station on these islands and would increase the likelihood of the 
authorized facility causing interference, shall notify the Interference 
Office, Arecibo Observatory, Post Office Box 995, Arecibo, Puerto Rico 
00613, in writing or electronically, of the technical parameters of the 
proposal. Applicants may wish to consult interference guidelines, which 
will be provided by Cornell University. Applicants who choose to 
transmit information electronically should e-mail to: prcz@naic.edu.
    (a) The notification to the Interference Office, Arecibo Observatory 
shall be made prior to, or simultaneously with, the filing of the 
application with the Commission. The notification shall state the 
geographical coordinates of the antenna (NAD-83 datum), antenna height 
above ground, ground elevation at the antenna, antenna directivity and 
gain, proposed frequency and FCC Rule Part, type of emission, effective 
radiated power, and whether the proposed use is itinerant. Generally, 
submission of the information in the technical portion of the FCC 
license application is adequate notification. In addition, the applicant 
shall indicate in its application to the

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Commission the date notification was made to the Arecibo Observatory.
    (b) After receipt of such applications, the Commission will allow 
the Arecibo Observatory a period of 20 days for comments or objections 
in response to the notification indicated. The applicant will be 
required to make reasonable efforts in order to resolve or mitigate any 
potential interference problem with the Arecibo Observatory and to file 
either an amendment to the application or a modification application, as 
appropriate. If the Commission determines that an applicant has 
satisfied its responsibility to make reasonable efforts to protect the 
Observatory from interference, its application may be granted.
    (c) The provisions of this paragraph do not apply to operations that 
transmit on frequencies above 15 GHz.

[ 62 FR 55534 , Oct. 27, 1997]