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The following is a chronology of ARRL efforts related to the FCC's proposal and decision that orders the “sunsetting” of the 3.3 – 3.5-GHz amateur radio secondary spectrum allocation. It is in descending chronological order, with the first actions at the bottom of the page and the latest presented first. It is comprised of items as reported by ARRL as well as ARRL comments and interactions filed with the FCC in response to the proposal.

FCC Final Rule Facilitating Shared Use in the 3100–3550 MHz Band
Federal Register | Published October 9, 2020; Effective November 9, 2020

FCC Orders Amateur Access to 3.5 GHz Band to “Sunset”
ARRL News | 10/8/2020

Report and Order and Further Notice of Proposed Rulemaking in WT Docket No. 19-348 (PDF)
FCC | Adopted September 30, 2020; Released October 2, 2020

ARRL Seeks Changes in FCC Proposal to Delete 3.4 GHz Amateur Band
ARRL News | 9/26/2020

ARRL Meeting with Senior FCC Staff; Ex Parte Presentation in WT Docket No. 19-348 (PDF)
ARRL Washington Counsel | 9/23/2020

ARRL Meetings with FCC Commissioner Assistants; Ex Parte Presentation in WT Docket No. 19-348 (PDF)
ARRL Washington Counsel | 9/23/2020

AMSAT Cites Need for Adequate Spectrum in Opposing Deletion of 3.4 GHz Band
ARRL News | 2/26/2020

ARRL Opposes FCC Plan to Delete the 3.4 GHz Band
ARRL News | 2/25/2020

ARRL Comments in Proceeding WT Docket No. 19-348 (PDF)
ARRL Washington Counsel | 2/21/2020

ARRL to Argue for Continued Access to 3-GHz Spectrum as FCC Sets Comment Deadlines
ARRL News | 1/24/2020

FCC Formally Adopts Proposals to Remove Amateur 3-GHz Band, Invites Comments
ARRL News | 12/17/2019

Notice of Proposed Rulemaking in WT Docket No. 19-348 (PDF)
FCC | Adopted December 12, 2019; Released December 16, 2019

ARRL to Oppose Proposal to Eliminate 3.3 – 3.5 GHz Amateur Allocation
ARRL News | 11/25/2019

NTIA Targets Portion of 3.4 GHz Band for Potential Wireless Broadband Use
ARRL News | 2/28/2018