The JBX42194 LC/APC to FC/UPC duplex singlemode fiber patch cable represents a professional-grade solution for organizations requiring reliable, high-performance optical connectivity. This 15-meter cable is specifically designed for single-mode fiber applications where signal integrity and minimal signal loss are critical requirements. **Technical Specifications:** The cable features a 9/125 micrometer singlemode core with G.657.A1 bend-insensitive glass fiber, ensuring compatibility with modern fiber infrastructure while maintaining superior bend performance. It delivers exceptional optical characteristics: insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB, tested in accordance with ANSI/TIA/EIA-455-171-A standards across both 1310nm and 1550nm wavelengths. The 1.8mm outer diameter provides flexibility in cable management without compromising durability. **Connector Configuration:** The LC/APC to FC/UPC configuration features Type A to B crossover polarity, the most common standard for duplex patch cord applications. LC/APC connectors offer superior return loss performance and minimize reflections, while FC/UPC connectors provide robust mechanical durability and widespread industry compatibility. **Standards Compliance & Quality:** This cable is TAA (Trade Agreements Act) compliant, making it suitable for government contracts and institutional procurement requirements. It meets RoHS/ELV directives (EU 2002/95/EC), ensuring environmental responsibility. The OFNR (Optical Fiber Non-conductive Riser) rating provides safe installation in building plenum spaces. **Applications & Benefits:** - Telecommunications networks and carrier environments - Data center interconnects and backbone infrastructure - Fiber-to-the-desk (FTTD) deployments - Network upgrades and expansions - Equipment patch panel connections **Practical Advantages:** The bright yellow jacket simplifies cable identification and management in complex network environments. Custom length availability accommodates non-standard installations without cable waste. Ships from multiple U.S. locations (Danville CA, Fort Worth TX, Beaufort SC) for rapid delivery, with free standard shipping on orders exceeding $99. **Durability & Support:** Manufactured to exacting specifications in Taiwan, the USA, or China with consistent quality assurance, this cable includes a 90-day limited warranty. The plastic accessory construction combined with professional-grade materials ensures years of reliable service in demanding network environments.