AFMETCAL is conducting market research to identify sources capable of procuring and delivering modernized, fully compatible plug-and-play replacement accessories and physical standards for legacy Keysight N5242A Vector Network Analyzers across Air Force Precision Measurement Equipment Laboratories. Contractors must demonstrate the technical capability to supply highly specialized, high-precision RF/microwave calibration accessories that integrate with the N5242A without software modifications or degraded metrological accuracy; reconditioned, remanufactured, or used material is unacceptable. Interested vendors should provide a capability statement covering company information, relevant experience, rough order of magnitude pricing, sales history, commercial-item/GSA/SAM status, point of contact, CAGE code, ownership, purchase-card acceptance, estimated prices and discounts, delivery time, and technical literature/warranty. The total estimated quantity is 1 unit over 1 year under NAICS 334515 with a 750-employee size standard, and both large and small businesses, joint ventures, and teaming arrangements are encouraged. Currently no funds are available for this acquisition.