This is a restricted solicitation for a firm-fixed price purchase order, anticipated to be awarded on a sole source basis to Chelton Limited for four Antennas (NSN 5985-99-549-9067). All items must have clear traceability to the Original Equipment Manufacturer (OEM), Chelton, Inc., and include a Certificate of Conformance. No drawings, specifications, or schematics are available from the USCG. Performance location is not specified, and no budget amount is provided. Quotations must be submitted with F.O.B. Destination or F.O.B. Origin shipping terms.