Near Earth Orbit Network Program's Sounder for Microwave-Based Applications

The National Aeronautics and Space Administration's Goddard Space Flight Center is pleased to release the Request for Proposal (RFP) for the Sounder for Microwave-Based Applications acquisition. This RFP replaces Draft RFP 80GSFC25R7005 issued on April 18, 2025 (including all amendments), in its entirety.

All attachments to this posting together constitute the complete RFP, including all instructions, restrictions, provisions, and contract clauses.

Amendment 1: The purpose of this amendment is to 1: Add Supply Chain Visibility Reporting; and 2. Correct the percentages in Attachment O - Milestone Payment Schedule. This amendment supersedes all affected areas in the RFP and previous amendments (if any). All other terms and conditions remain unchanged.

Amendment 2: The purpose of this amendment is to implement updates associated with Request for Proposal (RFP) Questions and Answers 1–9. Additionally, the Government has included RFP Questions and Answers 1–9.

Post: Post Question and Answer 10.

Post: Post Question and Answer 11.

Amendment 3: The purpose of this amendment is to 1. Add clause 52.222-90 ADDRESSING DEI DISCRIMINATION BY FEDERAL CONTRACTORS; and 2. Update clauses to align with the Revolutionary Federal Acquisition Regulation Overhaul and other corrections. Additionally, the Government has included RFP Question and Answer 12.

Post: Post Questions and Answers 13 and 14.