The JBX42449 FC/APC to FC/UPC duplex singlemode fiber patch cable represents professional-grade connectivity for mission-critical network infrastructure. Spanning 90 meters, this cable is specifically designed for applications requiring extended runs while maintaining signal fidelity and meeting stringent performance benchmarks. **Technical Excellence** Constructed with G.657.A1 glass fiber featuring a 9/125 micron core, this singlemode cable delivers wavelength performance at both 1310 nm (0.25 dB/km) and 1550 nm (0.35 dB/km) with exceptional low attenuation characteristics. The insertion loss specification of ≤0.35dB (0.15dB typical) and return loss ≥20dB ensures minimal signal degradation and superior optical coupling efficiency. These measurements are tested in strict accordance with ANSI/TIA/EIA-455-171-A-2001 standards, guaranteeing consistent quality across every production run. **Professional-Grade Design** The duplex configuration features FC/APC (Angled Physical Contact) to FC/UPC (Ultra Physical Contact) connectors with Type A to B crossover polarity—the industry standard for duplex patch cord applications. This asymmetrical connector arrangement is ideal for bi-directional signal transmission in telecommunications systems and modern data center architectures. The bright yellow OFNR (Optical Fiber Non-conductive Riser Rated) jacket provides excellent visibility for network management while meeting fire safety codes required in commercial building installations. **Compliance and Standards** TAA (Trade Agreements Act) compliant manufacturing and RoHS/ELV directive adherence make this cable suitable for government contracts and environmentally-conscious procurement initiatives. With 1.8mm outside diameter, the cable integrates seamlessly into existing fiber routing infrastructure without requiring special conduit modifications. **Applications** Ideal for telecommunications networks, enterprise data centers, educational institutions, research facilities, and any application requiring reliable long-distance fiber connectivity. The 90-meter length eliminates intermediate splicing while maintaining performance integrity. **Shipping and Support** Qualify for free standard shipping on orders exceeding $99. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) ensuring rapid delivery. Backed by a 90-day limited warranty for peace of mind in critical installations. **Custom Options Available** Require a different length? Custom configurations available to match your specific network topology requirements.