Homeland Defense Over-the-Horizon Radar

The Homeland Defense Over-the-Horizon Radar (HLD OTHR) Request for Information seeks industry input on the capability to deliver a complete turnkey HF Receive sub-system as part of a government-defined architecture for an operational OTHR system. The focus is on identifying vendors capable of planning, procuring, delivering, installing, integrating, testing, and fielding a modular open system architecture-based Receive sub-system with intellectual property fully accessible to the Government. The sub-system must include a Wide Open Front End, Back End Digital Receivers, antennas with baluns, calibration equipment, and hardware for processing and presenting decimated I/Q data, all supported by comprehensive Interface Control Documents and built-in test and health monitoring systems. The equipment must be housed in environmentally controlled shelters designed to withstand extreme temperatures, humidity, wind, and seismic activity, with full EMI shielding and cybersecurity controls compliant with DFARS 252.239-7010 and 252.204-7012. The Government requires demonstration of capabilities in system verification including FAT, cybersecurity testing, and system safety, along with a strategy for initial sustainment and long-term contractor logistics support spanning years one through ten post-delivery. Responses must provide cost estimates structured at a minimum to a level five Work Breakdown Structure covering hardware, program management, site integration and test, initial spares, pre-operations logistics, and transmit sub-system software licenses, though no contract award is anticipated from this RFI. Submission is limited to electronic Rough Order of Magnitude cost and schedule information, unclassified and properly marked for proprietary content, delivered by June 26, 2026, to the designated government point of contact. The RFI explicitly states no payment will be provided for responses, and the Government retains no obligation to acknowledge receipt or commit to future action. Contractors must disclose affiliations with foreign entities or blocked persons, ensure no sub-vendors are located in restricted countries, flow down IUID requirements to subcontractors, and integrate with the Enterprise Logistics Management System for GFP tracking. Knowledge retention strategies to prevent loss of critical lifecycle expertise upon employee departure are required, and organizational and personal conflict of interest clauses apply to all participants. The solicitation number is ESG9749, issued by the Department of Defense’s FA2204 Thtr Bttl Cntrl Aflcmc/hbd office at Hanscom Air Force Base, Massachusetts, under NAICS code 334511 with no set-aside