The JBX91205 70-meter SC/ST duplex singlemode fiber patch cable represents an industry-standard solution for telecommunications and data center applications requiring extended cable runs and exceptional signal integrity. This professional-grade cable features a duplex configuration with SC/UPC to ST/UPC connectors in a Type A to B crossover polarity arrangement, the most common configuration for duplex patch cords. Technical Excellence: Built with a 9/125 micron singlemode core and G.657.A1 glass fiber, this cable excels in long-distance applications. Performance specifications include insertion loss of ≤0.35dB (0.15dB typical) and return loss of ≥20dB, both tested and verified to ANSI/TIA/EIA-455-171-A-2001 standards. Attenuation rates of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm ensure minimal signal degradation across both common fiber transmission wavelengths. Compliance & Safety: This cable is fully TAA-compliant, meeting government procurement requirements for federal contracts. The green 1.8mm diameter jacket features OFNR (Optical Fiber Non-conductive Riser) rating, providing fire-rated protection suitable for riser installations in commercial buildings. RoHS/ELV compliance ensures environmental responsibility. Applications: Ideal for telecommunications infrastructure, data center interconnects, WAN links, enterprise network backbones, and any application requiring reliable long-distance fiber transmission. The 70-meter length accommodates building-to-building connections and extended horizontal runs. Customization & Support: Custom lengths are available to match your exact installation requirements. Backed by a 90-day limited warranty and shipped free on orders over $99 from multiple US locations, this cable provides both flexibility and value. Ships from Danville CA, Fort Worth TX, and Beaufort SC for faster delivery.