Aviation Groups Still Have Questions About FCC's Upper C-Band Proposals
Aviation associations met last week with FCC staff, including aides to Chairman Brendan Carr, on progress being made to protect radio altimeters as the agency moves toward an auction of upper C-band spectrum. According to a filing Tuesday in docket 25-59, they discussed new altimeter designs “safely enabling full power access for wireless operations for a potentially large amount of the spectrum being proposed by the Commission.” The groups at the meeting were Airlines for America, the Aerospace Industries Association, Aviation Spectrum Resources, the General Aviation Manufacturers Association, the International Air Transport Association and the Regional Airline Association.
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They also urged more focus on the effect of unwanted emissions on safety devices and on the need for additional antenna data from 5G proponents “to further verify technical specifications.” The FCC should move away from using conducted limits to regulate emissions and instead use an effective isotropic radiated power value “to bound all emissions from C-band emitters inside the 4.2-4.4 GHz band.” The groups said they're “still working to understand the impact of spurious emissions and believe that 5G emissions need to be compatible with the new radio altimeter standard under the worst-case conditions.”