The JBX89085 is a professional-grade 70-meter LC/ST Duplex Singlemode Fiber Patch Cable designed for demanding network environments requiring reliable, long-distance optical signal transmission. This comprehensive networking solution combines precision engineering with industry-leading performance metrics to support enterprise-grade infrastructure. **Superior Performance Specifications:** Features a 9/125 singlemode fiber core optimized for single-wavelength long-distance transmission. Delivers exceptional insertion loss of just ≤0.35dB (0.15dB typical) and return loss exceeding 20dB, ensuring minimal signal reflection and maximum data integrity. Tested for attenuation at 1310nm: 0.25dB/km and 1550nm: 0.35dB/km, meeting stringent ANSI/TIA/EIA-455-171-A-2001 standards. **Construction & Compliance:** Constructed with G.657.A1 grade optical glass and reinforced with OFNR riser-rated jacketing for fire safety. The purple outer jacket (1.8mm outside diameter) provides visual identification for network organization. TAA compliant, RoHS/ELV certified, and manufactured to EU Directive 2002/95/EC standards. **Connectivity & Applications:** LC/UPC to ST/UPC Type A to B crossover configuration (most common for duplex patch cords) enables seamless integration with existing infrastructure. Ideal for data centers, telecommunications networks, medical imaging systems, and enterprise-grade environments requiring ultra-reliable connectivity. **Convenience & Support:** Available in custom lengths for specialized installations. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders over $99. Backed by a 90-day limited warranty. Packaged in protective cases (10x10x10) ensuring damage-free delivery.