Aviation Groups Seek Changes to Draft C-Band Rules to Protect Radio Altimeters
Aviation interests told the FCC that proposed power limits and emission levels for the C band aren’t enough to protect radio altimeter radar systems operating in the 4200-4400 MHz band from harmful interference. The FCC rules should make clear that…
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“flexible-use licensees in the 3700-3980 MHz band (1) will be responsible for preventing harmful interference to radio altimeters and (2) resolve any interference that does occur,” said a filing posted Thursday in docket 18-122. The FCC should require a multistakeholder group to “provide a forum for industry to work expeditiously and cooperatively to advance the assessment of the potential for interference -- by both flexible mobile base stations and handsets -- to the embedded base of tens of thousands of FAA-certified radio altimeters; develop efficient, technical solutions; and propose regulatory measures to implement such solutions,” the filing said. Representatives of the Aerospace Industries Association, Aviation Spectrum Resources, the Aerospace Vehicle Systems Institute, the Air Line Pilots Association, Airbus and Airlines for America were among those who met with Wireless Bureau and Office of Engineering and Technology staff.