Interconnecting Box J-3514A/U

Genuine USGI (U.S. Government Issue) J-3514A/U Junction Box designed for integrating the KY-57 VINSON tactical COMSEC encryption unit into military vehicle communication systems.

This secure-voice junction unit mounts directly to the MT-1898 mounting bracket and serves as the primary terminal connection interface for the KY-57 processor during secure X-Mode cryptographic radio operations.

A highly rare, essential hardware component for military vehicle collectors, tactical radio restoration projects, and Cold War era electronics historians.

Product Specifications:

• Component Model: Junction Box J-3514A/U (J-Box)
• Associated Encryption System: TSEC/KY-57 VINSON COMSEC Equipment (X-Mode Secure Voice)
• Mechanical Interface: Designed to attach directly to the MT-1898 Mounting Base
• System Integration: Connects tactical crypto hardware to the AM-1780 / VIC-1 vehicular intercom networks and AN/VRC-12 series combat radios
• National Stock Number (NSN): 5940-01-049-7429 (Official Cross-Reference)
• Condition: Unissued New Old Stock (NOS) in flawless pristine surplus condition