This is a firm fixed-price contract for a minimum of 4 to a maximum of 24 spare HF Receiver Transmitter units, with a best estimate of 16 units, for the B-2 aircraft. The required delivery date for 16 units is 17 JUN 2025, and early delivery is acceptable. The items are to be shipped to Tinker AFB in Oklahoma. The government intends to solicit a limited number of sources, and while all responsible sources may submit a proposal, this notice is not a request for competitive proposals. The contract is contingent upon the availability of appropriated funds.