National Radio Astronomy Observatory Raises High-Band Interference Concerns
The National Radio Astronomy Observatory (NARO) raised concerns about Aeronet’s push for expanded use of the 70/80/90 GHz bands for uses including fixed wireless and 5G backhaul. In a filing last week, Aeronet noted “interactions with various federal agencies and…
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outlined potential approaches to coordination with such agencies that would eliminate chances of harmful interference while being viable as an operational matter for Aeronet and similarly situated providers.” NARO said it “notes with concern the recent ex parte communication,” per a filing posted Friday in docket 20-133. There's “a strong potential for harmful interference from SDDL [scheduled dynamic data link] operations aboard aircraft at large distances whose antennas were not pointed toward radio observatories,” the observatory said: “At small distances, radio astronomy receivers were shown to be at risk of burnout from SDDL in-band emissions.”