The JBX42508 85-meter ST/APC to ST/UPC duplex singlemode fiber patch cable represents a professional-grade solution for telecommunications infrastructure, data center connectivity, and enterprise network deployments. Engineered to exacting industry standards, this cable delivers the performance reliability required for mission-critical fiber optic installations. Technical Specifications & Performance: Constructed with 9/125 singlemode fiber utilizing G.657.A1 glass technology, this cable provides exceptional transmission characteristics. The duplex configuration incorporates two independent fiber strands, enabling simultaneous bidirectional communication—a critical requirement for modern network architectures. With insertion loss specifications of ≤0.35dB and return loss exceeding 20dB, the cable maintains signal integrity across extended distances while minimizing reflective interference. Connector Configuration: The ST/APC to ST/UPC connector pairing is particularly valuable in hybrid network environments where cross-connector compatibility is required. The Type A to B crossover polarity configuration represents the industry standard for duplex patch cords, ensuring seamless integration with existing infrastructure. Both connector types are field-proven for maximum reliability and minimal connection loss. Construction & Durability: The yellow riser-rated (OFNR) jacket provides excellent visibility during installation and troubleshooting while meeting stringent building code requirements. The 1.8mm outside diameter enables efficient cable management and routing through conduits and cable trays. Manufactured to exacting standards with RoHS/ELV compliance certification, this cable meets environmental and safety regulations globally. Compliance & Standards: TAA compliance ensures this cable meets government procurement specifications for federal agencies and institutions. Attenuation testing conforms to ANSI/TIA/EIA-455-171-A standards, guaranteeing consistent performance across manufacturing batches. The 90-day limited warranty provides additional peace of mind for critical installations. Applications & Use Cases: Ideal for data center expansions, telecommunications networks, fiber-to-the-premises (FTTP) implementations, and enterprise campus connectivity. The 85-meter length accommodates building-scale installations while maintaining superior signal characteristics. Custom lengths are available for unique deployment scenarios. Ships from multiple U.S. locations (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders exceeding $99, ensuring rapid delivery for time-sensitive network projects.