The Department of Defense, through the NAVSUP Weapon Systems Support office, is seeking to procure repair services for eight units of the Receiver-Transmitter, identified by National Stock Number (NSN) 7R 5821 012029228 RF and Part Number 647-3488-002. This procurement will be conducted on a sole source basis with Rockwell Collins - Missions and ST. Engineering Aerospace Systems as the approved suppliers, emphasizing the critical nature of these components for military operations. Interested parties are invited to submit capability statements or proposals within five days of the publication of this presolicitation notice, with the solicitation expected to be issued around April 10, 2025, and responses due by May 10, 2025. For further inquiries, contact Caitlin V. Donahue at caitlin.v.donahue.civ@us.navy.mil or by phone at 215-697-2198.