The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking qualified contractors to manufacture a Frequency Converter, identified by NSN 7R-1680-016338686-P8, with a quantity of three units. The procurement is aimed at fulfilling a specific need for aircraft components, as the government lacks the necessary data to perform repairs or manufacture the item independently. Interested parties must note that the government intends to negotiate with a single source, Avionic Instruments Inc., and that source approval is required prior to contract award. For further inquiries, potential contractors can contact Anthony F. Boselli at anthony.boselli@navy.mil or by phone at (215) 697-1360, with proposals due within five days of the notice publication.