The JBX42383 60-meter SC/APC to ST/UPC duplex singlemode fiber patch cable represents a professional-grade solution for mission-critical fiber optic network infrastructure. Engineered to stringent telecommunications standards, this cable delivers exceptional optical performance while maintaining full compliance with TAA requirements, making it ideal for government and regulated enterprise deployments. **Technical Excellence** This singlemode duplex cable features a precisely engineered 9/125 micron fiber core with G.657.A1 glass construction. The cable undergoes rigorous attenuation testing in accordance with ANSI/TIA/EIA-455-171-A-2001 standards, achieving low insertion loss specifications of ≤0.35dB (0.15dB typical) and return loss exceeding 20dB. Performance metrics include 0.25 dB/km attenuation at 1310nm and 0.35 dB/km at 1550nm, ensuring minimal signal degradation across long runs. **Robust Construction** The cable's 1.8mm outside diameter provides a compact form factor without sacrificing durability. The bright yellow jacket offers exceptional visibility in network installations while maintaining OFNR (riser-rated) flame-resistant properties, meeting building code requirements for professional installations. RoHS/ELV compliant materials ensure environmental responsibility and regulatory adherence. **Connectivity & Compatibility** Type A to B crossover polarity configuration accommodates standard duplex patch cord applications across diverse network topologies. The SC/APC connector provides physical contact performance, while the ST/UPC connector ensures broad compatibility with existing network infrastructure. **Application Versatility** Ideal for fiber-to-the-desktop (FTTD) installations, data center backbone connections, telecommunications infrastructure, and long-distance signal transmission. The 60-meter length accommodates substantial distances while maintaining signal integrity. **Convenience & Support** Custom length availability ensures exact fit for specific installations. Free standard shipping on orders exceeding $99 reduces deployment costs. A 90-day limited warranty provides peace of mind with professional support from multiple US distribution centers (Danville CA, Fort Worth TX, Beaufort SC).