The JBX86204 SC/ST duplex singlemode fiber patch cable represents professional-grade connectivity for mission-critical telecommunications infrastructure. This 65-meter cable combines precision engineering with compliance certifications required by government and enterprise procurement departments. **Technical Excellence:** Constructed with 9/125 micrometer singlemode fiber core and G.657.A1 glass composition, this cable meets stringent ANSI/TIA/EIA-455-171-A-2001 attenuation testing standards. The measured performance delivers ≤0.35dB insertion loss (0.15dB typical) and ≥20dB return loss, ensuring crystal-clear signal transmission across extended distances. Attenuation rates of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm accommodate both standard and long-wavelength applications. **Connector Configuration:** The SC/UPC to ST/UPC connector combination with Type A to B crossover polarity represents the most common duplex patch cord configuration for interoperability with existing network infrastructure. Both connector types feature ultra-polished ceramic ferrules for maximum coupling efficiency and minimal back reflection. **Compliance & Safety:** TAA (Trade Agreements Act) compliance satisfies federal procurement requirements, while RoHS/ELV directive adherence ensures environmental responsibility. The OFNR (Optical Fiber Nonconductive Riser) jacketing rating permits safe installation in vertical cable runs and building risers, with a durable 1.8mm outer diameter providing protection without excessive bulk. **Applications:** Perfect for backbone connections in data centers, campus network deployments, telecommunications facilities, and long-distance signal transmission where singlemode advantages are critical. The 65-meter length eliminates need for splicing in extended-run scenarios. **Convenience & Support:** Ships from multiple U.S. locations (Danville CA, Fort Worth TX, Beaufort SC) ensuring rapid delivery. Free standard shipping applies to orders exceeding $99. Custom lengths accommodate specific installation requirements. Each cable includes a 90-day limited warranty covering manufacturing defects. **Care Note:** Protect connector ends when not in use; avoid excessive bending radius (minimum 30mm recommended) to maintain fiber integrity.