The JBX42262 55-meter LC/APC to ST/UPC duplex singlemode fiber patch cable represents a professional-grade solution for critical network infrastructure. Engineered to meet ANSI/TIA/EIA-455-171-A-2001 standards, this cable delivers exceptional performance for long-distance signal transmission in telecommunications, data centers, and enterprise networks. **Superior Technical Performance:** Features a 9/125 singlemode core with G.657.A1 glass fiber, ensuring low attenuation characteristics: 0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm. Insertion loss is rated at ≤0.35dB with typical performance of just 0.15dB, while return loss exceeds 20dB for reliable signal integrity. These specifications enable transmission over extended distances without signal degradation. **Connector Configuration:** The Type A to B crossover polarity (most common for duplex patch cords) enables seamless compatibility with standard network infrastructure. LC/APC connectors feature angled polished ferrules for superior return loss performance, while ST/UPC connectors provide robust mechanical coupling. **Build Quality and Compliance:** Constructed with a flexible 1.8mm outer diameter yellow jacket rated OFNR (riser-rated), ensuring compliance with building codes and fire safety regulations. Full TAA compliance and RoHS/ELV directives make this cable suitable for government and enterprise procurement. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) for faster delivery. **Practical Applications:** - Long-distance campus network connectivity - Fiber-to-the-premises (FTTP) installations - Data center backbone infrastructure - Telecommunications network expansion - Broadcast and video transmission systems **Custom Options:** Available in custom lengths for non-standard requirements. Standard 55m length accommodates most enterprise installations. Backed by a 90-day limited warranty. Free standard shipping on orders exceeding $99 makes this an economical choice for bulk network upgrades.