The Department of Defense, through the Naval Air Systems Command (NAVAIR), is seeking proposals for the procurement of Joint Tactical Terminal – Transceiver (JTT-X) production units and aircraft integration support. The JTT-X is a Software Defined Radio (SDR) that includes an internal High Assurance Internet Protocol Encryptor (HAIPE) solution, with an anticipated contract covering the production of 455 units over a base period and four option years. This procurement is critical for enhancing airborne radio navigation capabilities and will proceed as a full and open competition, with a formal solicitation expected to be released in the second quarter of Fiscal Year 2026. Interested parties must ensure their final assembly facilities have current COMSEC clearance and must complete the Technical Library Access Request Form to gain access to necessary specifications; for further inquiries, contact Ryan Lysaght at ryan.c.lysaght.civ@us.navy.mil or Jessica Myers at jessica.v.myers.civ@us.navy.mil.