The JBX42685 70m FC/APC to LC/UPC Duplex Singlemode Fiber Patch Cable represents professional-grade optical connectivity for mission-critical network infrastructure. Designed to meet stringent performance requirements, this cable combines precision engineering with reliable construction to ensure superior signal transmission across extended distances. Technical Excellence: This singlemode patch cable features a 9/125 core with G.657.A1 glass fiber, optimized for both 1310 nm and 1550 nm wavelengths. The FC/APC connector provides angled physical contact surfaces that minimize back reflections, while the LC/UPC connector offers standard polished surfaces. Together, they create a Type A to B crossover configuration—the industry standard for duplex patch cords. Performance Specifications: With insertion loss of ≤0.35dB (0.15dB typical) and return loss ≥20dB, this cable maintains signal integrity over the full 70-meter span. Attenuation measurements comply with ANSI/TIA/EIA standards, ensuring consistent performance whether operating at 1310 nm (0.25 dB/km) or 1550 nm (0.35 dB/km). Construction & Compliance: The yellow OFNR (Optical Fiber Non-conductive Riser) jacketing provides flame resistance and non-conductive protection, ideal for building installations. At just 1.8mm outside diameter, the cable routes easily through cable management systems while remaining visible and identifiable. TAA compliance satisfies federal procurement requirements, while RoHS/ELV certification ensures environmental compliance. Applications: Ideal for telecommunications networks, data centers, broadcast facilities, and enterprise networks requiring long-distance single-mode fiber connectivity. The FC/APC to LC/UPC configuration bridges legacy FC systems with modern LC-based infrastructure. Shipping & Support: Available in custom lengths, this cable ships from strategically located U.S. warehouses (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders exceeding $99. Each unit includes a 90-day limited warranty covering manufacturing defects. Whether upgrading existing fiber infrastructure or deploying new high-performance networks, the JBX42685 delivers the reliability and precision demanded by professional telecommunications applications.