The JBX42476 85m FC/APC Duplex 9/125 Singlemode Fiber Patch Cable represents a reliable solution for professional fiber optic networking applications. This cable is specifically designed to support long-distance, high-bandwidth signal transmission in demanding telecommunications and data center environments. **Key Technical Specifications:** This duplex patch cable features dual singlemode fiber strands with a 9/125 micron core diameter, utilizing premium G.657.A1 glass fiber technology. The cable achieves exceptional performance metrics with insertion loss of ≤0.35dB (0.15dB typical) and return loss ≥20dB at both 1310nm and 1550nm wavelengths. Attenuation is rated at 0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm, meeting or exceeding industry standards. **Design and Durability:** The bright yellow OFNR-rated jacket provides excellent visibility for cable identification and organization while offering flame-resistant protection suitable for riser installations. The 1.8mm outside diameter ensures compatibility with standard fiber distribution infrastructure. FC/APC connectors on both ends deliver superior return loss characteristics through angled physical contacts, minimizing signal reflection and degradation. **Compliance and Standards:** This cable is TAA compliant and fully RoHS/ELV certified under EU directive 2002/95/EC, meeting regulatory requirements for government and regulated industry procurement. Performance testing adheres to ANSI/TIA/EIA-455-171-A-2001 standards, ensuring consistent quality and reliability. **Applications:** Ideal for telecommunications networks, data center interconnects, long-distance backbone cabling, and any application requiring duplex singlemode fiber connectivity. The 85-meter length accommodates mid-range facility installations. Custom lengths are available for specialized requirements. **Warranty and Support:** Backed by a 90-day limited warranty. Ships from multiple U.S. locations with free standard shipping on orders over $99. Available in custom lengths upon request.