The JBX42596 ST/APC to FC/APC duplex singlemode fiber patch cable represents a professional-grade solution for demanding fiber optic network applications. Spanning 75 meters, this cable delivers reliable signal transmission with industry-leading performance specifications. **Technical Specifications:** This duplex cable features dual 9/125 singlemode fiber strands with G.657.A1 grade glass fiber, optimized for long-distance telecommunications. The ST/APC connectors feature angle-polished ceramic ferrules (APC), while the FC/APC connectors provide excellent mating reliability. Type A to B crossover polarity ensures compatibility with standard duplex installations. **Performance Characteristics:** With attenuation of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm, this cable excels in both C-band and L-band wavelengths. Insertion loss performance of ≤0.35dB (typical 0.15dB) and return loss ≥20dB meet stringent telecommunications standards, ensuring minimal signal degradation over extended distances. **Compliance & Certifications:** Fully TAA compliant for government and educational procurement. RoHS and ELV compliant per EU Directive 2002/95/EC. OFNR riser-rated jacketing ensures safe installation in building plenum spaces. All attenuation measurements conform to ANSI/TIA/EIA-455-171-A-2001 standards. **Design Features:** The bright yellow outer jacket (1.8mm diameter) facilitates easy cable identification in complex network installations. Riser-rated construction provides fire safety compliance. Available in custom lengths for specialized applications. **Applications:** Ideal for telecommunications networks, data centers, FTTH installations, research facilities, and backbone networks requiring reliable singlemode fiber connectivity. The 75-meter length accommodates medium-distance interconnections between buildings or within large facilities. **Warranty & Support:** Backed by a 90-day limited warranty. Shipped from multiple US locations (Danville, CA; Fort Worth, TX; Beaufort, SC) ensuring rapid delivery. Free standard shipping on orders exceeding $99. Manufactured in Taiwan, USA, or China for consistent quality. **Maintenance & Care:** Protect connectors with dust caps when not in use. Avoid excessive bending or tensioning. Store in clean, dry conditions away from extreme temperatures to maintain optimal performance.