The JBX85087 65-meter LC/ST duplex singlemode fiber patch cable represents professional-grade optical connectivity for telecommunications infrastructure, data centers, and enterprise network installations. This meticulously engineered fiber optic solution combines precision manufacturing with exceptional performance characteristics to meet the demanding requirements of modern high-speed data transmission. **Technical Excellence** Built around a 9/125 singlemode core using G.657.A1 glass fiber, this cable delivers wavelength performance optimized for both 1310nm and 1550nm telecommunications windows. The remarkably low attenuation specifications—0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm—ensure minimal signal loss over extended cable runs. Measured insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB provide the signal clarity essential for bandwidth-intensive applications. **Robust Construction** The 1.8mm outer diameter jacketing features OFNR (Optical Fiber Non-Conductive Riser) rating, providing fire safety compliance while maintaining flexibility for routing through building infrastructure. The distinctive yellow jacket aids visual identification and organization within complex cable management systems, while the duplex configuration efficiently consolidates bi-directional communication paths. **Connector Configuration** Featuring LC/UPC to ST/UPC connectors in Type A to B crossover polarity—the industry standard for duplex patch cords—this cable ensures seamless integration with existing network equipment without adapter complications. Both connector types are engineered for durability, supporting thousands of mating cycles without performance degradation. **Compliance & Warranty** Fully RoHS and ELV directive compliant, this cable meets stringent environmental and safety standards. Attenuation testing follows ANSI/TIA/EIA-455-171-A-2001 standards, guaranteeing tested performance specifications. The 90-day limited warranty protects your investment. **Applications** Ideal for telecommunications facilities, data center interconnections, campus area networks (CANs), and metropolitan area networks (MANs) requiring single-mode performance. Particularly valuable where signal integrity over longer distances is paramount. **Ordering & Support** Available in custom lengths for specialized installations. Free standard shipping applies to orders exceeding $99. Ships from multiple US locations (Danville, CA; Fort Worth, TX; Beaufort, SC) for expedited delivery. Extensive inventory ensures reliable availability for enterprise deployments.