The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of 17 units of the Receiver-Transmitter (NSN 7R-5821-014178763-FX, REF NR 622-8149-003). This procurement requires engineering source approval due to the flight-critical nature of the item, necessitating that only approved sources may submit proposals, as the technical data necessary for full and open competition is not available. The item is essential for maintaining the quality of airborne radio and television communication equipment, and the government intends to solicit and negotiate with only one source under FAR 6.302-1. Interested parties must submit their proposals, including necessary source approval documentation, within 45 days of the notice publication, and can contact Danielle Diciacco at (215) 697-5970 or via email at DANIELLE.DICIACCO.CIV@US.NAVY.MIL for further information.