The JBX85209 75-Meter SC/ST Duplex Singlemode Fiber Patch Cable represents a premium solution for professional fiber optic networks requiring extended reach and reliable performance. Engineered to connect SC and ST connectors in duplex configurations, this cable is specifically designed for single-mode applications where distance and signal clarity are paramount. **Technical Excellence** Built with 9/125 micron singlemode fiber core and G.657.A1 glass technology, this cable delivers exceptional optical performance. The measured attenuation rates of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm comply with ANSI/TIA/EIA-455-171-A-2001 standards. With insertion loss ≤0.35dB (0.15dB typical) and return loss ≥20dB, the cable maintains signal integrity over its full 75-meter length—ideal for backbone connections, campus networks, and telecommunications infrastructure. **Professional Installation Features** The bright yellow OFNR (Outdoor Fiber Non-conductive Riser) rated jacket ensures fire safety compliance in commercial buildings while providing superior visibility for network management. The 1.8mm diameter allows flexible routing through existing cable pathways without unnecessary stress. SC/UPC to ST/UPC connectors with Type A to B crossover polarity represent the industry-standard configuration for duplex patch cords, eliminating compatibility concerns. **Compliance & Reliability** Fully TAA (Trade Agreements Act) compliant and RoHS/ELV directive adherent, this cable meets stringent government and environmental standards. Ships from multiple US distribution centers (Danville CA, Fort Worth TX, and Beaufort SC) with free standard shipping on orders exceeding $99. The cable includes a 90-day limited warranty and is available in custom lengths for specialized requirements. **Applications** Ideal for telecommunications facilities, data centers, ISP backbone networks, and enterprise campus installations where singlemode fiber's superior distance and bandwidth characteristics are essential. The 75-meter specification supports inter-building and extended network runs where multimode cables would introduce signal degradation.