# RFI/Synopsis: Enhanced Very Low Frequency (VLF) Transducer Canonical: https://abierto.us/opportunities/9602c8126e4f4c9593ce9f074468e987 - Notice type: Special notice - Status: Closed. Deadline was December 8, 2025 at 2:00 PM EST - Department: Department of the Navy - Agency: Department of the Navy - Contracting office: NUWC Div Newport (N66604) - NAICS: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing - Product or service code: 5845 Underwater Sound Equipment - Place of performance: Newport, Rhode Island - County: Newport County (FIPS 44005). https://abierto.us/counties/newport-county-ri-44005 - City: Newport. https://abierto.us/cities/newport-ri-4449960 - First posted: December 8, 2025 - Last posted: December 8, 2025 - SAM.gov: https://sam.gov/workspace/contract/opp/9602c8126e4f4c9593ce9f074468e987/view ## Description Naval Undersea Warfare Center Division, Newport (NUWCDIVNPT) intends to award a sole source Indefinite Delivery/Indefinite Quantity (ID/IQ) contract modification for enhanced Very Low Frequency (VLF) Transducer capability for undersea applications. This procurement would be conducted under the authority of DFARS 206.302-1 Only one responsible source and no other supplies or services will satisfy agency requirements. The basis for the only one responsible source determination is that only Sparton DeLeon Springs, LLC has the ability to meet the Government’s technical and schedule requirements. This is based on the fact Sparton is currently under first article development under contract N6660423DB300. Contract N6660423DB300 is being modified to have enhanced capability to support Anti-Submarine Warfare (ASW) mission sets. The Government has determined that any other company would take an additional twenty (20) months to get to first production unit delivery, and this delay represents an unacceptable schedule impact to the Government. Concurrently with this sole source effort the Government will be soliciting, evaluating, and awarding a fully competitive effort. The purpose of this notice is to provide industry with the opportunity to identify alternative sources capable of meeting the Governments’ requirements for VLF Transducers. Interested parties are invited to submit capability statements that demonstrate their ability to fulfill these requirements and challenge the Government’s intent to award a sole source contract to Sparton DeLeon Springs, LLC. Responses to this notice shall be submitted to the primary and secondary points-of-contact identified below no later than the due date of this notice. ## Publications - December 8, 2025: Special notice, due December 8, 2025 at 2:00 PM EST. Notice 9602c8126e4f4c9593ce9f074468e987. https://sam.gov/workspace/contract/opp/9602c8126e4f4c9593ce9f074468e987/view ## Points of contact - Kerin Prairie, kerin.m.prairie.civ@us.navy.mil, 4018323037 - Andrew Nagelhout, andrew.c.nagelhout.civ@us.navy.mil, 4018323844 --- Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/9602c8126e4f4c9593ce9f074468e987.