The Naval Research Laboratory is seeking potential sources capable of providing engineering support for the design, development, and integration of RF and HF systems, including specific radar and transmitter types. The primary place of performance is the Naval Research Laboratory in Washington, D.C. This is a Sources Sought notice for planning purposes only and is not a formal solicitation. Interested parties must submit a response of no more than 15 pages via email to the specified contacts, including company, technical, and security clearance information. No budget information or specific project timelines are provided in this notice.