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Comment by formerly_proven | Hacker News Reader

Probably because there isn't any problem. Though it could also be that 5G in the US is meant to use some different channels / frequencies than elsewhere, as was done in older wireless standards.

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Most countries simply don't allow the frequencies FCC wants to approve.

Nearly 40 countries have already adopted rules and deployed hundreds of thousands of 5G base stations in the C-Band at similar frequencies and similar power levels—and in some instances, at closer proximity to aviation operations—than 5G will be in the U.S. None of these countries has reported any harmful interference with aviation equipment from these commercial deployments, as the Federal Aviation Administration recently confirmed.[0]

[0] https://ecfsapi.fcc.gov/file/1103192305940/211103%20CTIA%20E...

The very nice weasel wording used tries to make it sound like 40 countries approved above 3.8GHz, but the further paragraphs explain that only japan did so, without going into much detail other than the low guard band.

The FAA complaint is about 3.8-3.98GHz, and all other examples involve no frequency allocations above 3.8GHz

Absolutely zero weasel wording. The initial deployment of C-Band in the US is 100 MHz of spectrum from 3.7 to 3.8 GHz. The remainder of the auctioned C-Band from 3.8 to 3.98 cannot be deployed until the incumbent satellite operators clear the band on or before December 2023. For 2 years there will be a 400MHz guard band.

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