On February 1, 2021, the Federal Communications Commission (FCC or 
Commission) published in the Federal Register a noticed of proposed rulemaking in which it would permit geostationary satellite orbit (GSO) space stations in the fixed-satellite service (FSS) to operate downlinks from space to Earth in the 17.3– 17.8 GHz frequency band, subject to certain limitations, The FCC also proposes related technical updates to its rules governing the FSS and the Broadcasting- Satellite Service to prevent harmful interference. Publication triggers deadlines for public comment.
More specifically, the Commission proposes to:
permit use of the 17.3–17.7 GHz band by geostationary satellite orbit (GSO) space stations in the fixed-satellite service (FSS) in the space-to-Earth direction on a co-primary basis with incumbent services. We also propose to permit limited GSO FSS (space-to-Earth) use of the 17.7–17.8 GHz band on a non- protected basis with respect to fixed service operations. …
We propose to define an extended Ka- band in our rules, i.e., the 17.3–18.3 GHz (space-to-Earth), 18.8–19.4 GHz (space-to-Earth), 19.6–19.7 GHz (space- to-Earth), 27.5–28.35 GHz (Earth-to- space) and 28.6–29.1 GHz (Earth-to- space) bands. We further propose to apply certain uplink power limits currently applicable to GSO FSS transmissions in the conventional Ka- band to GSO FSS uplink transmissions in the extended Ka-band. If adopted, these power limits will allow us to streamline licensing of FSS earth stations and will result in a closely harmonized regulatory framework for all similar FSS uplink transmissions in the conventional and extended Ka-bands.
DATES: Comments are due March 3, 2021. Reply comments are due March 18, 2021
Who presently uses those frequencies? Will it harm them? Is the the band Starlink uses?