Pending future FCC action, amateur radio secondary use of the 3.3 – 3.45 GHz band segment may continue indefinitely. The FCC, as part of a lengthy Second Report and Order (R&O) for commercial licensing of 3.45 – 3.55 GHz adopted on March 17, agreed with ARRL that continued access by amateur radio to 3.3 – 3.45 GHz should be allowed until consideration of the 3.1-3.45 GHz spectrum in a later proceeding. The FCC action in WT Docket 19-348 represents a partial — and temporary — reprieve from the FCC’s December 2019 proposal to remove amateur radio from the entire band, and it makes available an additional 50 megahertz than an FCC proposal last fall to allow amateur temporary use of 3.3 – 3.4 GHz.
Amateur secondary operation in the 3.45 – 3.50 GHz band must cease 90 days after public notice that the spectrum auction has closed and licensing has begun. That is expected to happen early in 2022. The FCC announced the opening of 3.45 – 3.55 GHz for auction to commercial 5G interests on March 17.
Read more – via American Radio Relay League | Ham Radio Association and Resources http://www.arrl.org/news/view/amateur-radio-gets-a-partial-reprieve-on-3-5-ghz