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

Canonical: https://abierto.us/opportunities/80gsfc26r0028

- Solicitation number: 80GSFC26R0028
- Notice type: Solicitation
- Status: Closed. Deadline was June 1, 2026 at 5:00 PM EDT
- Department: National Aeronautics and Space Administration
- Contracting office: NASA Goddard Space Flight Center (80GSFC)
- NAICS: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
- Product or service code: 1675 Space Vehicle Components
- First posted: March 31, 2026
- Last posted: May 14, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/fa051936b989458b945d09b2d2eae8ac/view

## Description

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.

## Publications

- March 31, 2026: Solicitation, due June 1, 2026 at 5:00 PM EDT. Notice 254196841210478e8b19ab802fb52fb2. https://sam.gov/workspace/contract/opp/254196841210478e8b19ab802fb52fb2/view
- April 9, 2026: Solicitation, due June 1, 2026 at 5:00 PM EDT. Notice d08c89396fc745e6b396a3b43477f464. https://sam.gov/workspace/contract/opp/d08c89396fc745e6b396a3b43477f464/view
- April 16, 2026: Solicitation, due June 1, 2026 at 5:00 PM EDT. Notice 84a8d34c03a8417094d9cda794475a80. https://sam.gov/workspace/contract/opp/84a8d34c03a8417094d9cda794475a80/view
- May 6, 2026: Solicitation, due June 1, 2026 at 5:00 PM EDT. Notice 16fdef032c2b407d9f41c6a133c60fdb. https://sam.gov/workspace/contract/opp/16fdef032c2b407d9f41c6a133c60fdb/view
- May 7, 2026: Solicitation, due June 1, 2026 at 5:00 PM EDT. Notice 147ba39b14b04c29a679acdfc62962a8. https://sam.gov/workspace/contract/opp/147ba39b14b04c29a679acdfc62962a8/view
- May 14, 2026: Solicitation, due June 1, 2026 at 5:00 PM EDT. Notice fa051936b989458b945d09b2d2eae8ac. https://sam.gov/workspace/contract/opp/fa051936b989458b945d09b2d2eae8ac/view

## Points of contact

- Bruce Tsai, Bruce.B.Tsai@nasa.gov, 2406840428
- Jerry Edmond, jerry.edmond-1@nasa.gov, 3012869108

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/80gsfc26r0028.