The JBX42385 SC/APC to ST/UPC duplex singlemode fiber patch cable represents the pinnacle of optical connectivity solutions for professional network infrastructure. This 70-meter cable is engineered to meet the stringent demands of modern telecommunications, data center operations, and enterprise networking environments where signal integrity and reliability are paramount. **Superior Optical Performance** Constructed with 9/125 singlemode fiber using G.657.A1 glass composition, this cable delivers industry-leading optical characteristics. With measured insertion loss of ≤0.35dB (typically 0.15dB) and return loss ≥20dB, this cable ensures minimal signal degradation over its 70-meter span. Attenuation specifications of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm comply with ANSI/TIA/EIA-455-171-A-2001 standards, guaranteeing predictable performance across different wavelengths. **Installation and Safety Features** The yellow OFNR (Optical Fiber Non-conductive Riser) rated jacket provides excellent visibility during installation while meeting critical fire safety codes required for in-building applications. The compact 1.8mm outside diameter facilitates easy routing through cable trays and conduits. Type A to B crossover polarity configuration makes this the ideal choice for bridging SC/APC and ST/UPC equipment without requiring additional adapters. **Compliance and Reliability** TAA compliant and RoHS/ELV certified, this cable meets all government contracting and environmental regulations. The 90-day limited warranty protects your investment, while the 10x10x10 case packaging ensures safe delivery. Available in custom lengths for specialized applications, this cable adapts to your unique infrastructure requirements. **Ideal Applications** Perfect for data center interconnections, telecommunications backbone installations, long-distance campus networks, and equipment upgrades requiring extended cable runs with exceptional signal quality. **Free Shipping Available** Qualify for free standard shipping on orders exceeding $99, with convenient shipment options from multiple US distribution centers.