The JBX42438 FC/APC to FC/UPC Duplex Singlemode Fiber Patch Cable represents a premium solution for professionals demanding reliability and performance in fiber-optic networking. This 35-meter cable is precision-engineered to facilitate high-speed, long-distance signal transmission with minimal loss and maximum clarity. **Technical Specifications:** Featuring a 9/125 single-mode core with G.657.A1 grade glass fiber, this cable is optimized for both 1310nm and 1550nm wavelengths. The measured attenuation rates (0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm) ensure minimal signal degradation over extended distances. With insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB, the cable meets ANSI/TIA/EIA-455-171-A-2001 testing standards, guaranteeing consistent performance. **Design & Durability:** The 1.8mm outside diameter and OFNR (Riser Rated) jacketing provide flexibility without compromising protection. The bright yellow jacket enables quick cable identification and management in complex installations, while the duplex configuration (two fiber strands) supports bidirectional communication. **Compliance & Standards:** TAA (Trade Agreements Act) compliant and RoHS/ELV certified per EU Directive 2002/95/EC, this cable meets government procurement and environmental regulations. Manufacturing facilities in Taiwan, US, and China ensure quality and availability. **Flexibility & Support:** Available in custom lengths to fit your specific installation requirements. Includes 90-day limited warranty. The Type A to B crossover polarity configuration is the industry standard for duplex patch cords, ensuring compatibility with existing infrastructure. Ideal for data center interconnections, telecommunications networks, enterprise LANs, and any application requiring dependable single-mode fiber connectivity. Free standard shipping on orders exceeding $99.