The JBX42482 ST/APC to ST/UPC Duplex Singlemode Fiber Patch Cable represents a critical component for modern high-speed network infrastructure. This 1.5-meter cable is specifically engineered to meet the stringent demands of professional telecommunications and data center environments where signal quality and reliability are paramount. **Technical Excellence**: Built with 9/125 singlemode fiber core and G.657.A1 glass composition, this cable delivers outstanding performance characteristics. The insertion loss specification of ≤0.35dB at both 1310nm and 1550nm wavelengths ensures minimal signal degradation over the transmission path. With return loss rated at ≥20dB, the cable provides excellent signal reflection performance critical for duplex communication systems. **Compliance & Standards**: TAA compliance ensures this cable meets government procurement standards, making it suitable for federal and institutional projects. The RoHS and ELV directive compliance demonstrates environmental responsibility. OFNR riser-rated jacketing allows installation in plenum spaces and vertical cable runs within building structures, expanding deployment flexibility. **Connector Configuration**: The ST/APC to ST/UPC connector pairing with Type A to B crossover polarity is the industry-standard configuration for duplex patch cords. This design enables simultaneous bidirectional fiber signal transmission, making it essential for full-duplex network applications. **Practical Benefits**: The distinctive yellow jacket aids in visual identification and organization within complex cable infrastructures. The 1.8mm outside diameter balances durability with manageable cable bend radius. Custom length availability accommodates unique installation requirements beyond the standard 1.5m offering. **Applications**: Ideal for telecommunications closets, data center interconnects, fiber-to-the-premises (FTTP) installations, LAN backbones, and any application requiring reliable singlemode signal transmission. The cable ships from multiple US locations (California, Texas, and South Carolina) ensuring rapid delivery. Free standard shipping on orders exceeding $99 provides added value for bulk purchases.