The JBX42646 is a premium-quality 25-meter SC/APC to LC/UPC duplex singlemode fiber patch cable designed for high-performance optical networking applications. This cable meets the rigorous demands of modern telecommunications, data centers, and enterprise network environments. **Technical Specifications:** Constructed with 9/125 singlemode fiber core and G.657.A1 glass fiber, this cable provides excellent signal fidelity over extended distances. The insertion loss specification of ≤0.35dB (0.15dB typical) ensures minimal signal degradation, while return loss of ≥20dB maintains signal integrity. Attenuation rates of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm comply with ANSI/TIA/EIA-455-171-A-2001 standards, providing reliable performance across dual-wavelength transmission systems. **Key Features:** - Type A to B crossover polarity (standard duplex configuration) - Riser-rated (OFNR) jacket for indoor installation safety - 1.8mm outside diameter for easy routing and management - Bright yellow jacket for visual identification and organization - RoHS/ELV compliant for environmentally responsible procurement **Compliance & Availability:** TAA compliant for government and federal agency projects, this cable meets stringent procurement requirements. Available in custom lengths upon request, allowing flexibility for specific installation needs. Multi-location shipping from Danville CA, Fort Worth TX, and Beaufort SC ensures rapid delivery. **Applications:** Ideal for connecting SC/APC connectorized equipment to LC/UPC terminations in telecommunications rooms, data centers, and laboratory environments. Suitable for single-mode long-distance transmission requiring minimal signal loss and maximum reliability. **Warranty & Support:** Backed by a 90-day limited warranty, this cable provides peace of mind for critical network installations. Free standard shipping on orders exceeding $99 reduces total cost of ownership for network professionals and system integrators.