The JBX43445 70-meter FC/APC to FC/UPC simplex singlemode fiber patch cable represents professional-grade fiber optic connectivity engineered for demanding network environments. Constructed with 9/125 singlemode glass fiber (G.657.A1 spec), this cable delivers exceptional performance characteristics critical for long-distance telecommunications and high-speed data transmission. **Key Performance Specifications:** This cable achieves an impressive insertion loss of just 0.15dB typical (≤0.35dB maximum), well below industry standards. Return loss exceeds 20dB, ensuring minimal signal reflection and interference. Attenuation rates are optimized for both 1310nm (0.25 dB/km) and 1550nm (0.35 dB/km) wavelengths, making it suitable for WDM applications. Testing adheres to ANSI/TIA/EIA-455-171-A standards, guaranteeing consistent quality. **Design & Construction:** The yellow jacket provides excellent visibility during installation and troubleshooting. With a compact 1.8mm outside diameter, the cable fits easily in cable trays and conduit. The riser-rated (OFNR) jacketing meets fire safety codes for in-building applications. Its simplex configuration transmits fiber signals through a single strand, ideal for dedicated point-to-point connections. **Compliance & Certification:** TAA compliant for government procurement. RoHS/ELV certified for environmental compliance. The FC/APC to FC/UPC connector pairing accommodates mixed-environment installations where different connector types are required. **Practical Applications:** Ideal for telecommunications networks, data centers, fiber to the premise (FTTP) installations, broadcast facilities, medical imaging systems, and enterprise network backbones. The 70-meter length suits building-to-building connections and long equipment runs. **Custom Options:** Available in custom lengths to match your specific installation requirements. Ships from multiple U.S. locations (California, Texas, South Carolina) with free standard shipping on orders over $99. Manufacturing quality from Taiwan, U.S., and China facilities ensures reliability and availability. **Support & Warranty:** Backed by a comprehensive 90-day limited warranty. Proper storage in a dry environment and careful handling prevent kinking or stress on the glass fiber core. The straight-through polarity ensures straightforward installation without complex configuration.