The JBX85090 80-meter LC/ST duplex singlemode fiber patch cable represents a professional-grade solution for demanding network applications requiring reliable, long-distance optical signal transmission. This cable is engineered to deliver exceptional performance in enterprise, data center, and telecommunications environments. **Technical Excellence:** Built with a 9/125 singlemode core and premium G.657.A1 glass fiber, this cable achieves outstanding optical performance metrics. The insertion loss specification of ≤0.35dB (0.15dB typical) ensures minimal signal degradation, while the return loss of ≥20dB prevents signal reflection and interference. Attenuation measurements comply with industry standards at both primary wavelengths: 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm. **Durability and Safety:** The yellow OFNR (Optical Fiber Non-conductive Riser) jacket provides superior fire rating suitable for vertical cable runs in multi-story buildings. The 1.8mm outer diameter is compact yet rugged, with protective plastic accessories ensuring connector integrity. RoHS and ELV compliant, this cable meets stringent environmental regulations. **Versatile Connectivity:** The LC/UPC to ST/UPC connector configuration with Type A to B crossover polarity is the industry standard for duplex patch cords. This universal compatibility enables seamless integration with existing fiber infrastructure in data centers, network closets, and telecommunications facilities. **Practical Advantages:** The 80-meter length accommodates extensive runs between network equipment, reducing the need for additional splices or connectors that could compromise signal quality. Custom lengths are available for specialized applications. Ships from multiple U.S. locations (Danville CA, Fort Worth TX, or Beaufort SC) ensuring rapid delivery. **Quality Assurance:** Every cable is tested for attenuation in accordance with ANSI/TIA/EIA standards. The 90-day limited warranty provides peace of mind for critical installations. Free standard shipping on orders exceeding $99 makes this a cost-effective choice for organizations requiring multiple cables. **Ideal Applications:** - Data center interconnects - Long-distance network trunk lines - Telecommunications infrastructure - High-speed WAN connections - Campus fiber backbone networks - Mission-critical signal transmission