The Department of Defense, through the Marine Corps Systems Command (MARCORSYSCOM), is initiating a sole-source procurement for Microwave Radio Test Sets (MRTS) to support testing of existing and future tactical Satellite Communications systems. The MRTS will be utilized for real-time fault isolation testing of Radio Frequency transmit and receive paths, and it is essential that these units are calibrated biannually or as needed. Keysight Technologies is identified as the sole provider of the MRTS due to its proprietary N9915A FieldFox system, which meets the specific operational requirements of the Marine Corps. The planned contract will be an Indefinite Delivery Indefinite Quantity (IDIQ) with a Firm Fixed Price (FFP) structure, covering a base year and three additional one-year ordering periods, with the anticipated solicitation release in April 2025. Interested vendors may contact Contract Specialist Mark Denhup at mark.denhup2@usmc.mil for further information.