The JBX42387 80m SC/APC to ST/UPC duplex singlemode fiber patch cable represents a premium solution for professional networking infrastructure. Engineered for telecommunications, data centers, and enterprise-grade applications, this cable delivers the reliability and performance required in mission-critical environments. **Technical Excellence:** Built with 9/125 singlemode fiber and G.657.A1 glass composition, this cable provides superior signal preservation across extended distances. The duplex configuration supports simultaneous bidirectional communication, making it ideal for full-duplex applications. Attenuation specifications of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm ensure minimal signal loss, while insertion loss of ≤0.35dB (0.15dB typical) and return loss ≥20dB guarantee clean, reliable transmissions. **Compliance & Certification:** TAA compliant and RoHS/ELV certified per EU directive 2002/95/EC, this cable meets government procurement requirements. All attenuation testing conforms to ANSI/TIA/EIA-455-171-A-2001 standards, ensuring consistent quality and performance. **Installation Features:** The 1.8mm outer diameter and flexible yellow OFNR jacket simplify routing through existing cable runs and conduit systems. The distinctive yellow color aids in identification and management within complex cable infrastructures. SC/APC connectors feature angled polished finishes for superior return loss characteristics, while ST/UPC connectors provide standard connectivity with Type A to B crossover polarity configuration. **Practical Benefits:** With 80 meters of cable length, this solution eliminates intermediate connection points, reducing insertion loss and potential failure points. Custom lengths are available for specialized applications. Free standard shipping on orders over $99 and rapid deployment from multiple U.S. locations (Danville, CA; Fort Worth, TX; Beaufort, SC) ensure quick availability. **Warranty & Support:** A 90-day limited warranty provides peace of mind, while the TAA compliance opens doors for government and enterprise contracts. Whether upgrading legacy fiber networks or deploying new infrastructure, this cable delivers professional-grade performance at competitive pricing.