The JBX85089 75-meter LC/ST duplex singlemode fiber patch cable represents a professional-grade solution for telecommunications professionals and data center administrators. Built to exacting specifications, this cable delivers the performance and reliability required for mission-critical network infrastructure. **Technical Excellence** This singlemode patch cable features a precision 9/125 micron core with G.657.A1 glass fiber composition, optimized for telecommunications wavelengths. The cable has been attenuation-tested to ANSI/TIA/EIA-455-171-A-2001 standards, ensuring consistent performance with typical insertion loss of just 0.15dB and guaranteed ≥20dB return loss. At standard operating wavelengths (1310nm and 1550nm), attenuation remains well within specifications at 0.25 dB/km and 0.35 dB/km respectively. **Robust Construction** The 1.8mm outer diameter cable is jacketed in OFNR (Optical Fiber Non-conductive Riser) rated yellow PVC, meeting fire safety standards for installation in commercial building risers and plenum spaces. The distinctive yellow color aids in identification and organization within complex cable environments. LC/UPC and ST/UPC connectors are factory-terminated with precision Type A to B crossover polarity, the most common and compatible configuration for duplex patch cords. **Compliance & Warranty** Fully RoHS and ELV compliant per EU Directive 2002/95/EC, this cable meets environmental and safety standards for global deployment. Each cable includes a comprehensive 90-day limited warranty, backed by manufacturers located across Taiwan, the US, and China for quality assurance. **Applications** Ideal for telecommunications networks, data centers, fiber-to-the-premises (FTTP) installations, and any application requiring reliable long-distance singlemode fiber transmission. The 75-meter length accommodates multi-floor buildings and extended equipment spacing while maintaining signal integrity. **Custom Options Available** Custom lengths are available for specialized installation requirements. Orders over $99 qualify for free standard shipping from multiple distribution centers (Danville CA, Fort Worth TX, or Beaufort SC) ensuring fast delivery.