The JBX88215 70m ST/ST Duplex Singlemode Fiber Patch Cable represents a professional-grade solution for telecommunications networks requiring extended transmission distances without signal degradation. Engineered with precision optics and robust construction, this cable excels in data center interconnects, telecommunications backbone systems, and long-distance network deployments. **Technical Excellence:** The cable features a 9/125 singlemode core with G.657.A1 grade glass fiber, optimized for both 1310nm and 1550nm wavelengths. Attenuation specifications of 0.25dB/km at 1310nm and 0.35dB/km at 1550nm ensure minimal signal loss over the full 70-meter length. With typical insertion loss of just 0.15dB and maximum of 0.35dB, this cable maintains signal integrity critical for high-speed data transmission. **Durability & Compliance:** The 1.8mm outside diameter jacketing uses OFNR riser-rated material, meeting fire safety and building code requirements. TAA compliance ensures government procurement eligibility, while RoHS/ELV certifications confirm environmental responsibility. All attenuation specifications are independently tested to ANSI/TIA/EIA-455-171-A standards. **Practical Features:** The distinctive yellow jacket provides visual identification and simplifies cable tracing in complex installations. Duplex configuration with Type A to B crossover polarity enables simultaneous two-way communication. ST/UPC connectors provide excellent return loss (≥20dB), minimizing signal reflection. **Flexibility & Support:** Available in custom lengths for specific installation requirements. Ships from multiple U.S. locations (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders exceeding $99. Backed by a 90-day limited warranty. **Applications:** Ideal for campus network backbone systems, data center connectivity, telecommunications infrastructure upgrades, and any application requiring reliable, long-distance singlemode transmission. Perfect for enterprises seeking TAA-compliant networking solutions.