The JBX42463 FC/APC to FC/APC duplex singlemode fiber patch cable represents a professional-grade solution for organizations requiring reliable, high-performance fiber optic connectivity over extended distances. At 20 meters in length, this cable strikes the perfect balance between reach and manageability, making it ideal for connecting network equipment across larger facility layouts without signal degradation. KEY TECHNICAL SPECIFICATIONS: This duplex configuration features two singlemode fiber strands with 9/125 core dimensions, utilizing G.657.A1 glass fiber for superior performance. The cable achieves exceptional low insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB, with attenuation specifications of 0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm—ensuring signal fidelity for both traditional and long-wavelength applications. FEATURES & BENEFITS: The distinctive yellow jacket provides immediate visual identification in patch panels and reduces installation errors. The Type A to B crossover polarity configuration is industry-standard for duplex patch cords, eliminating compatibility concerns. With a compact 1.8mm outside diameter, the cable routes easily through conduit and along cable trays. Riser-rated (OFNR) jacketing ensures compliance with building codes and fire safety standards, while RoHS/ELV compliance meets environmental regulations. APPLICATIONS: Ideal for telecommunications infrastructure, data center interconnects, long-haul network links, and enterprise backbone connections. Perfect for organizations upgrading to singlemode fiber for increased bandwidth and distance capabilities. COMPLIANCE & WARRANTY: TAA compliant with 90-day limited warranty. Ships from multiple U.S. locations for faster delivery. Free standard shipping on orders exceeding $99. Custom lengths available for specialized requirements. MAINTENANCE: Keep connectors clean and protected when not in use. Store in dry conditions and avoid excessive bending or tension.