This is a combined synopsis/solicitation for three specific antenna units, which must have clear, documented traceability to the Original Equipment Manufacturer, Chelton Avionics, Inc. The anticipated award date is on or about February 10, 2026. A firm-fixed price purchase order is anticipated to be awarded on a sole source basis. No drawings, specifications, or schematics are available from the agency. Quotations must be submitted via email to the specified addresses.