This is a small business set-aside, brand-name requirement for specific Dow-Key Microwave RF switches, as no alternates are acceptable due to system design integration. The contract will be a Firm Fixed Price purchase order for a base quantity of 18 switches, with options for an additional 75 switches. Delivery is F.O.B. Destination to Newport, RI 02841, and must occur within 18 weeks after award. Offerors must be authorized Dow-Key Microwave distributors and provide proof of that status. The government will evaluate quotes using the Lowest Priced, Technically Acceptable (LPTA) method.