The JBX93075 20-meter LC/ST duplex singlemode fiber patch cable represents cutting-edge optical connectivity technology for mission-critical network infrastructure. This professional-grade cable combines precision engineering with proven reliability, making it the preferred choice for telecommunications providers, data centers, and enterprise IT departments. **Superior Optical Performance** With a 9/125 micrometer core and G.657.A1 glass fiber specification, this cable delivers excellent signal integrity. The measured insertion loss of ≤0.35dB (0.15dB typical) minimizes signal degradation over the 20-meter run length, while the return loss of ≥20dB ensures minimal signal reflection. Attenuation rates of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm meet or exceed industry standards, supporting both traditional and long-wavelength network architectures. **Duplex Connectivity** The LC/ST duplex configuration provides two separate optical pathways in a single cable assembly, enabling simultaneous transmission and reception. This Type A to B crossover polarity represents the most common duplex patch cord standard, ensuring seamless integration with existing infrastructure. The dual-strand design is essential for full-duplex communications in modern networks. **TAA Compliance & Regulatory Standards** Fully compliant with the Trade Agreements Act (TAA) and RoHS/ELV directives, this cable meets stringent government procurement requirements. Its OFNR (Optical Fiber Non-conductive Riser) rated jacket provides both fire safety and plenum compatibility for building-wide deployments. **Robust Construction** The 1.8mm outside diameter provides optimal balance between flexibility and durability. The plastic accessories and composite materials ensure long-term reliability in diverse environmental conditions. Available in custom lengths to suit specific installation requirements. **Value & Warranty** Enjoy free standard shipping on orders over $99 and benefit from a comprehensive 90-day limited warranty. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) ensuring rapid delivery. **Applications** Ideally suited for telecommunications networks, data center interconnects, enterprise campus backbones, and any installation requiring reliable singlemode fiber connectivity over medium distances.