The JBX42738 35-meter ST/APC to LC/UPC duplex singlemode fiber patch cable represents professional-grade connectivity for mission-critical telecommunications infrastructure. Engineered for reliability and performance, this cable bridges different connector types while maintaining signal integrity across long-distance transmissions. **Technical Specifications:** Constructed with 9/125 singlemode fiber and G.657.A1 glass fiber composition, this cable supports both 1310nm and 1550nm wavelengths with minimal attenuation (0.25 dB/km at 1310nm, 0.35 dB/km at 1550nm). The duplex configuration provides two independent fiber strands for simultaneous bidirectional communication. Insertion loss of ≤0.35dB (0.15dB typical) ensures minimal signal degradation, while return loss ≥20dB prevents reflective signal interference. **Design & Construction:** The yellow OFNR-rated jacket provides riser-rated fire protection, making it suitable for in-building telecommunications installations without requiring conduit. The 1.8mm outside diameter offers space-efficient routing in crowded cable trays and patch panels. Type A to B crossover polarity is configured for standard duplex patch cord applications. **Compliance & Standards:** Fully TAA compliant for government and institutional purchasing requirements. RoHS/ELV certified per EU Directive 2002/95/EC. Performance tested to ANSI/TIA/EIA-455-171-A-2001 standards, ensuring compatibility with enterprise-grade network infrastructure. **Applications:** Ideal for telecommunications networks, ISP backbone connections, data center interconnects, and long-distance signal transmission where connector compatibility challenges exist. The 35-meter length accommodates medium-distance runs in large facilities. **Custom Options & Support:** Available in custom lengths to match specific installation requirements. Ships from three US locations with free standard shipping on orders exceeding $99. Backed by a 90-day limited warranty covering manufacturing defects. For technical specifications or custom configurations, contact our support team.