C-Band Transition

With the beginning of 2021, the C-Band transition has kicked into high gear.  Below are resources to assist ACA Connects members in your planning.

Satellite Operator Resources


The satellite operators’ Transition Plans contain helpful narratives, and their quarterly reports provide updates on the progress of their transition activities as well as any schedule changes.

Passband Filter Technical Specifications

Earth station operators electing lump sum payment, or with one or more earth stations not on the FCC’s Incumbent Earth Station List, will need to acquire a passband filter for, and install it on, each antenna in order to protect from 5G interference.  Red filters block out 3700-3820 MHz signals, and blue filters block out 3700-4000 MHz signals. You will need red filters for earth stations in Phase I transition areas no later than the Phase I transition deadline, December 5, 2021.   Blue Filters will not be required until the Phase II transition deadline, December 5, 2023.

The FCC’s requirements for the passband filters are discussed in paras. 359-72 of the C-Band Order.  And here are general technical specifications for both the red and blue Alga Microwave filters as developed jointly by SES and Intelsat.  You may find further details, including diagrams, here for the red filters (Group I) and here for the blue filters (Group K).

Current and Near-Term Transition Activities and the Programmers’ Technical Notices

The following provides targeted information on current and near-term transition activities and related technical information.  This includes:

  • Spreadsheets of Intelsat’s and SES’s near-term transition activities (starting within at least the next five months), which you can download and sort chronologically and in other ways helpful in your transition planning.  You may find tables of all their transition activities under the “Satellite Operator Resources” section above.
  • Programmer transition notices for upcoming transition activities, with more detailed technical information.

If you have any questions, or have received any programmer transition notices that you do not see on the Transition Schedule and Technical Information page, please contact Mike Jacobs, ACA Connects Vice President of Regulatory Affairs, at mjacobs@acaconnects.org.


Part 6c: Meet the Relocation Payment Clearinghouse, and Get Updates from Intelsat and SES on Transition Activities

April 1, 2021
View Presentation Slides

Part 6b: Satellite Operators Intelsat and SES Discuss Their Transition Plans for Lump Sum Electors

March 4, 2021
View Presentation Slides

Part 6: Satellite Operators Intelsat and SES Discuss What Needs to Occur at MVPD Earth Station Sites This Month and Beyond and Answer Questions

January 28, 2021
View Presentation Slides

Key FCC Resources

The FCC’s C-Band Order: Expanding Flexible Use of the 3.7 to 4.2 GHz Band


The FCC's Final Lump Sum Amounts Public Notice and Cost Catalog


The FCC's Updated Incumbent C-Band Earth Station List


You may contact Mike Jacobs, ACA Connects Vice President of Regulatory Affairs, at mjacobs@acaconnects.org with any questions.


The material provided in ACA Connects webinars and member advisories is meant to inform ACA Connects members of recent legal and regulatory developments, and should not be considered legal advice. It is not intended, nor should it be used, as a substitute for specific legal advice that would be provided by legal counsel in response to inquiries regarding particular situations. By virtue of providing this information and/or answering submitted questions, neither ACA Connects nor its outside legal consultants are providing you with legal advice and are not acting as your counsel.