The JBX42498 ST/APC to ST/UPC duplex singlemode fiber patch cable represents a premium connectivity solution for telecommunications, data centers, and enterprise networks. This 35-meter cable combines exceptional optical performance with robust construction standards, making it suitable for mission-critical applications where signal quality cannot be compromised. Key Technical Features: The cable features a 9/125 singlemode fiber core with G.657.A1 glass fiber specification, ensuring compatibility with modern optical networks. The duplex configuration provides simultaneous bidirectional signal transmission through two fiber strands. Connector specifications include ST/APC (angled physical contact) on one end and ST/UPC (ultra polished connector) on the other, configured as Type A to B crossover—the industry standard for duplex patch cords. This polarity arrangement eliminates the need for additional adapter cables. Optical Performance: Tested in accordance with ANSI/TIA/EIA-455-171-A-2001 standards, this cable delivers excellent optical characteristics. Typical insertion loss measures just 0.15dB with maximum specifications of 0.35dB, minimizing signal degradation over the 35-meter span. Return loss exceeds 20dB, ensuring minimal signal reflection. Attenuation specifications are optimized for both 1310nm (0.25dB/km) and 1550nm (0.35dB/km) wavelengths, supporting diverse optical network implementations. Construction and Safety: The 1.8mm outside diameter jacket provides excellent flexibility for routing through cable trays and conduit. OFNR (Optical Fiber Non-Conductive Riser) rating ensures fire-safe performance in vertical building spaces. RoHS and ELV compliance meet EU environmental directives, while TAA compliance satisfies government procurement requirements. The yellow jacket facilitates quick visual identification in complex network installations. Customization and Support: Custom lengths are available upon request, allowing you to order the exact cable length needed for your installation. The 90-day limited warranty provides peace of mind, backed by professional technical support. Free standard shipping applies to orders exceeding $99, and multiple fulfillment locations ensure rapid delivery to your facility. Applications: Ideal for connecting optical network equipment, telecommunications infrastructure, data center interconnects, and long-distance signal transmission where singlemode fiber's superior distance and bandwidth capabilities are required. Perfect for DWDM systems, metro networks, and any installation demanding enterprise-grade reliability.