The JBX42689 90-meter FC/APC to LC/UPC duplex singlemode fiber patch cable represents a premium solution for professional fiber optic network installations. Built to exacting telecommunications standards, this cable delivers reliable, high-speed data transmission over extended distances without compromising signal integrity. **Technical Excellence:** This singlemode cable features a 9/125 micron core with G.657.A1 grade glass fiber, specifically designed for long-distance telecommunications. The FC/APC (Angled Physical Contact) connector on one end ensures superior return loss characteristics (≥20dB), while the LC/UPC connector provides industry-standard compatibility. Attenuation specifications of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm demonstrate performance across critical wavelength windows used in DWDM systems. **Duplex Configuration:** The duplex design with Type A to B crossover polarity enables simultaneous bidirectional communication, making it ideal for full-duplex applications. This configuration maximizes network efficiency in data center, telecommunications, and enterprise environments where concurrent transmission and reception are essential. **Compliance & Quality Assurance:** Fully TAA-compliant for government procurement requirements, this cable meets ANSI/TIA/EIA-455-171-A-2001 standards for attenuation testing. RoHS/ELV compliance ensures environmental responsibility, while OFNR riser-rating provides safe installation in vertical runs and plenum spaces where applicable. **Installation Advantages:** The bright yellow jacket enhances visibility in complex installations, reducing identification errors and installation time. The slim 1.8mm outside diameter allows easy routing through cable trays and conduits. At 90 meters, this cable length accommodates building-scale installations without requiring splicing, eliminating potential loss points. **Ideal Applications:** - Data center interconnects and backbone cabling - Long-distance telecommunications links - DWDM (Dense Wavelength Division Multiplexing) systems - Campus network installations - Equipment room to floor connections - Government and regulated facility deployments **Backed by Service:** Shipped from multiple U.S. locations (California, Texas, South Carolina) for rapid delivery, with free standard shipping on orders over $99. Custom lengths are available for specialized requirements, and the 90-day limited warranty ensures peace of mind.