§ 27.19   Requirements for operation of base and fixed stations in the 600 MHz
downlink band in close proximity to Radio Astronomy Observatories.

   (a) Licensees must make reasonable efforts to protect the radio astronomy
   observatory  at  Green  Bank, WV, Arecibo, PR, and those identified in
   § 15.712(h)(3) of this chapter as part of the Very Long Baseline Array (VLBA)
   from interference.

   (b) 600 MHz band base and fixed stations in the 600 MHz downlink band within
   25 kilometers of VLBA observatories are subject to coordination with the
   National  Science Foundation (NSF) prior to commencing operations. The
   appropriate NSF contact point to initiate coordination is Electromagnetic
   Spectrum Manager, NSF, 4201 Wilson Blvd., Suite 1045, Arlington, VA 22203,
   fax 703-292-9034, email esm@nsf.gov.

   (c) Any licensee that intends to operate base and fixed stations in the 600
   MHz downlink band in locations near the Radio Astronomy Observatory site
   located in Green Bank, Pocahontas County, West Virginia, or near the Arecibo
   Observatory in Puerto Rico, must comply with the provisions in § 1.924 of
   this chapter.

   [ 79 FR 48538 , Aug. 15, 2014]

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