It appears that Miles Fidelman <mfidelman@meetinghouse.net> said:
Harold Feld did a much better job in November:
https://wetmachine.com/tales-of-the-sausage-factory/what-the-eff-faa-my-insa... Well... a bit better look at the politics & motivations of the folks involved. Still doesn't address whether or not C band radios break radio altimeters.
To translate from the FCC-esse: “Air industry, we cannot screw over the U.S. deployment in 5G by taking the single largest, most useful allocation of 5G spectrum off the shelf indefinitely because a handful of older, crappy altimeters might under some wildly improbable set of circumstances experience harmful interference. While we take air safety issues seriously, you guys are gonna need to recognize that “no 5G in lower C-Band” is not a realistic expectation. So please work with the wireless industry here to figure out if you are going to need to get people to upgrade their equipment.” Also this link from the article, which is self-serving but I believe their numbers are accurate: https://www.5gandaviation.com/ R's, John