WTO notification · TBT
United StatesAdopted, according to its latest notice
Official title
Earth Stations in Motion
The United States issued an addendum on 5 January 2026 to the earlier TBT notification G/TBT/N/USA/1636. Addenda often report that a measure was adopted, changed, postponed or withdrawn. The measure was first notified on 31 July 2020. The comment period closed on 5 February 2026.
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Published here:
Updated here:
Earth stations in motion (EISMs)
Latest notice (G/TBT/N/USA/1636/Add.1, 5 January 2026)
The latest notice says the measure was adopted or published.
Space Bureau Seeks To Refresh the Record on Proposed Rules To Permit the Use of Additional Frequency Bands for NGSO Satellites To Communicate With Earth Stations in Motion
In this document, the Space Bureau seeks to refresh the record on proposed rules to permit the use of additional frequency bands for non-geostationary orbit ('NGSO') Fixed Satellite Service ('FSS') satellites to communicate with Earth Stations in Motion ('ESIMs'). 90 Federal Register (FR) 59783, 22 December 2025; Title 47 Code of Federal Regulations (CFR) Part 25: This extension of the comment period to the proposed rule is identified by IB Docket Nos. 17-95 and 18-315. A document released 10 December 2025 is available for public inspection online at The document adopted on 13 May 2020 and released on 14 May 2020 is available at Documents are also accessible from the FCC's Electronic Document Management System (EDOCS) by searching the Docket Numbers. Comments are due on or before 21 January 2026; reply comments are due on or before 4pm Eastern Time 5 February 2026. WTO Members and their stakeholders are asked to submit comments to the USA TBT Enquiry Point by or before 4pm Eastern Time on 5 February 2026. Comments received from WTO Members and their stakeholders will be shared with FCC and will also be submitted to the FCC's Electronic Comment Filing System (ECFS) if received within the comment period. Comments (filings) accessible at
Proposed rule - In this document, the Commission seeks to further develop the record regarding potential interference from out-of-band emissions of ESIMs in the 28.35-28.6 GHz band into the adjacent 27.5-28.35 GHz band used by Upper Microwave Flexible Use Service (UMFUS). These actions will promote innovative and flexible use of satellite technology, as well as provide regulatory equity between GSO and NGSO FSS systems.
Every notice about this measure published here, newest first. Each one is the notifying member's own text.
AddendumG/TBT/N/USA/1636/Add.1
Comment deadline: Closed on 5 February 2026
Space Bureau Seeks To Refresh the Record on Proposed Rules To Permit the Use of Additional Frequency Bands for NGSO Satellites To Communicate With Earth Stations in Motion
In this document, the Space Bureau seeks to refresh the record on proposed rules to permit the use of additional frequency bands for non-geostationary orbit ('NGSO') Fixed Satellite Service ('FSS') satellites to communicate with Earth Stations in Motion ('ESIMs'). 90 Federal Register (FR) 59783, 22 December 2025; Title 47 Code of Federal Regulations (CFR) Part 25: This extension of the comment period to the proposed rule is identified by IB Docket Nos. 17-95 and 18-315. A document released 10 December 2025 is available for public inspection online at The document adopted on 13 May 2020 and released on 14 May 2020 is available at Documents are also accessible from the FCC's Electronic Document Management System (EDOCS) by searching the Docket Numbers. Comments are due on or before 21 January 2026; reply comments are due on or before 4pm Eastern Time 5 February 2026. WTO Members and their stakeholders are asked to submit comments to the USA TBT Enquiry Point by or before 4pm Eastern Time on 5 February 2026. Comments received from WTO Members and their stakeholders will be shared with FCC and will also be submitted to the FCC's Electronic Comment Filing System (ECFS) if received within the comment period. Comments (filings) accessible at
Regular notificationG/TBT/N/USA/1636
Comment deadline: Closed on 24 August 2020
Earth Stations in Motion
Proposed rule - In this document, the Commission seeks to further develop the record regarding potential interference from out-of-band emissions of ESIMs in the 28.35-28.6 GHz band into the adjacent 27.5-28.35 GHz band used by Upper Microwave Flexible Use Service (UMFUS). These actions will promote innovative and flexible use of satellite technology, as well as provide regulatory equity between GSO and NGSO FSS systems.
Expodite writes its summary from the official record. The notification and the documents it notifies are on the WTO's own websites.
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