The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for the repair and modification of Receiver Transmitters. This procurement is a sole source requirement, indicating that the government does not possess sufficient data to contract with any source other than the current one, and interested parties must provide necessary documentation for source approval. The items are critical for military operations, and the selected contractor will be responsible for ensuring compliance with various quality and inspection standards. Proposals must be submitted within 120 days of the solicitation, and inquiries can be directed to Cody Cameron at cody.p.cameron.civ@us.navy.mil or by phone at 215-697-1202.