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The Department of Defense is procuring proposals for the design and modernization of a common advanced Very Low Frequency (VLF) receiver system to equip future NC3 platforms with Crypto Modernization-2 compliant capabilities. The solicitation is limited to AFLCMC/XA IDIQ Category 2 contract awardees and may result in one or two Delivery Orders.
Design and modernize a common advanced VLF receiver system that is Crypto Modernization-2 compliant, NSA certified, and Open Mission Systems capable.
Update...Some interested parties could not open the Interface Control Document (ICD) for the KGV-363 End Cryptographic Unit (ECU) document. This update provides an accessible version of this document. Access may still need to be requested as this document is Controlled Unclassified Information (CUI). Amendment #2 (19 May
2026) for the Common Very Low Frequency Receiver Increment 2 (CVRi2) Modernization Fair Opportunity Proposal Request (FOPR) has been released. This amendment updates Appendix 3 (Bidder’s Library Content List) of the FOPR and extends the proposal deadline to 8 July at Noon Eastern Time. The Unclassified Documents of the Bidder’s Library are now available to download. Please note that award
eligibility remains strictly limited to AFLCMC/XA IDIQ Category 2 contract awardees. Amendment #1 (4 May
2026) for the Common Very Low Frequency Receiver (VLF) Increment 2 (CVRi2) Modernization Fair Opportunity Proposal Request (FOPR) is now available. This update incorporates supplemental language into Section 3.4.1 Volume 1 Technical – Engineering and Section 3.4.2 (Volume 1 Technical - Logistics). Please be advised that
eligibility for award is strictly limited to AFLCMC/XA IDIQ Category 2 contract awardees. Common Very Low Frequency Receiver (VLF) Increment 2 (CVRi2) Modernization: - AFNWC/NC3's VLF Enterprise Program Office (EPO) is soliciting proposals from Industry for the design of a "common" advanced VLF (e.g., secure Beyond Line of Site comms of Emergency Action Messages thru all levels of conflict) capability that will modernize all legacy VLF NC3 airborne and ground-based VLF systems and equip future NC3 platforms with a Crypto Modernization-2 (CM2) compliant, New Waveform capable, NSA certified, and Open Mission Systems (OMS) capable "common, one-size-fits all" receiver system. The
objective of this program is the rapid development of a production-ready, fully functional very low frequency receiver and its required ancillary support equipment. This Fair Opportunity Proposal Request (FOPR) outlines the
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