The JBX42618 35-meter FC/APC to ST/UPC duplex singlemode fiber patch cable represents a professional-grade solution for critical telecommunications infrastructure. Designed specifically for long-distance signal transmission applications, this cable features dual strands in a duplex configuration, allowing simultaneous bidirectional communication without requiring separate cable runs. **Technical Excellence:** Built with 9/125 singlemode fiber core and G.657.A1 glass composition, this cable meets ANSI/TIA/EIA-455-171-A-2001 attenuation standards. Performance specifications include insertion loss of just 0.15dB typical (0.35dB maximum), return loss exceeding 20dB, and attenuation rates of 0.25dB/km at 1310nm or 0.35dB/km at 1550nm. These metrics ensure minimal signal degradation over extended distances. **Compliance and Safety:** TAA-compliant construction meets federal procurement requirements for government projects. RoHS and ELV directives compliance ensures environmental responsibility and reduced hazardous materials. The OFNR (Optical Fiber Non-Conductive Riser) rated yellow jacket provides fire safety certification suitable for vertical riser installations in multi-story buildings. **Practical Features:** The distinctive yellow color enables easy cable identification during network management and troubleshooting. At 1.8mm outside diameter, the cable fits efficiently through cable trays and conduit systems. FC/APC and ST/UPC connector pairing accommodates mixed-equipment environments. Type A to B crossover polarity configuration represents industry-standard connectivity for duplex applications. **Customization and Convenience:** Available in custom lengths beyond the standard 35m offering, this product accommodates unique installation requirements. Free standard shipping on orders exceeding $99, with fulfillment from multiple U.S. locations (Danville CA, Fort Worth TX, Beaufort SC) ensures rapid delivery. The 90-day limited warranty provides confidence in product reliability and manufacturer support for your critical network infrastructure.