The JBX42748 ST/APC to LC/UPC Duplex Fiber Patch Cable represents a premium solution for professional fiber optic network installations. This 85-meter cable is engineered to deliver reliable, high-speed signal transmission in telecommunications, data centers, campus networks, and enterprise infrastructure environments. **Technical Excellence:** With a 9/125 singlemode fiber core utilizing G.657.A1 glass specifications, this cable meets rigorous telecommunications standards. The exceptionally low insertion loss (≤0.35dB with 0.15dB typical performance) ensures minimal signal degradation over the 85-meter span. Return loss specifications of ≥20dB guarantee reliable signal integrity. Attenuation performance of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm makes this cable suitable for both legacy and modern network wavelengths. **Professional-Grade Design:** The distinctive yellow OFNR (Optical Fiber Nonconductive Riser) rated jacket provides multiple advantages: superior visibility for installation and troubleshooting, fire safety compliance for in-building use, and protection against physical damage. The 1.8mm diameter balances flexibility with durability, enabling installation in challenging cable trays and conduit spaces. **Connector Specifications:** Feature ST/APC (Angle Physical Contact) connectors on one end and LC/UPC (Ultra Physical Contact) connectors on the other, configured as Type A to B crossover—the industry-standard polarity for duplex patch cords. This configuration simplifies installation for most common networking scenarios. **Compliance & Reliability:** TAA (Trade Agreements Act) compliant for government and regulated sector applications. RoHS/ELV directive adherence ensures environmental responsibility. Manufactured to ANSI/TIA/EIA-455-171-A-2001 standards with attenuation testing validation. The 90-day limited warranty provides peace of mind. **Flexible Options:** While this product comes in 85 meters, custom lengths are available to match specific installation requirements. Available from multiple U.S. distribution centers (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders exceeding $99. **Ideal Applications:** Perfect for connecting fiber patch panels to network equipment, structured cabling installations, telecommunications closets, and inter-building backbone connections. Suitable for both new installations and network upgrades where reliable, standards-compliant performance is essential.