The JBX42530 45-meter ST/APC to ST/APC duplex singlemode fiber patch cable represents a professional-grade solution for mission-critical fiber optic network installations. This duplex configuration allows simultaneous bi-directional signal transmission, making it ideal for full-duplex communication systems. **Technical Specifications:** This cable features a 9/125 singlemode core with G.657.A1 glass fiber, providing superior signal quality and extended transmission distances. The insertion loss specification of ≤0.35dB (0.15dB typical) ensures minimal signal degradation across the 45-meter span, while return loss ≥20dB confirms excellent connection stability. Attenuation performance is measured at both 1310nm (0.25dB/km) and 1550nm (0.35dB/km) wavelengths, covering standard and extended telecommunications bands. **Compliance & Safety:** TAA compliance makes this cable suitable for federal government procurement and sensitive infrastructure projects. RoHS/ELV certification ensures environmental responsibility, while OFNR (riser-rated) jacketing permits installation in vertical cable runs without conduit in building risers, reducing installation costs and complexity. **Construction Quality:** The robust 1.8mm outer diameter jacket with yellow color coding provides durability and easy cable identification in complex installations. ST/APC connectors with Type A to B crossover polarity represent the industry standard for duplex patch cords, ensuring compatibility with existing infrastructure. **Flexibility & Customization:** While this listing features the popular 45-meter length, custom lengths are available to match your specific deployment requirements, minimizing waste and optimizing cable management. **Applications:** • Data center interconnects and server connections • Telecommunications network infrastructure • Campus backbone networks • High-speed LAN implementations • Government and regulated facility installations **Warranty & Support:** Backed by a comprehensive 90-day limited warranty, with free standard shipping on orders exceeding $99. Ships from strategically located US warehouses (Danville, CA; Fort Worth, TX; Beaufort, SC) for rapid delivery.