The JBX42655 70m SC/APC to LC/UPC Duplex Singlemode Fiber Patch Cable represents professional-grade connectivity for mission-critical network infrastructure. This high-performance cable bridges single-mode fiber connections with exceptional reliability and minimal signal loss. **Specifications & Performance** Constructed with a 9/125 single-mode core and G.657.A1 glass fiber, this cable delivers industry-leading performance metrics. The insertion loss of ≤0.35dB (0.15dB typical) at 1310nm and 0.35dB/km at 1550nm ensures minimal signal degradation, critical for long-distance transmission. Return loss specifications of ≥20dB maintain signal integrity and reduce reflections that could compromise data quality. **Design & Construction** The duplex configuration with Type A to B crossover polarity follows industry standards, simplifying installation and reducing compatibility issues. The 1.8mm outer diameter provides a balance between flexibility and durability, while the yellow OFNR-rated (Riser-rated) jacket ensures safe deployment in building plenum spaces and offers superior visibility during maintenance. **Compliance & Certifications** Fully TAA compliant for government and institutional procurement requirements. RoHS and ELV directive adherent, meeting strict environmental standards. Attenuation testing follows ANSI/TIA/EIA-455-171-A-2001 standards, guaranteeing quality assurance. **Applications & Use Cases** Ideal for: - Data center backbone connections - Campus network installations - Telecommunications infrastructure - High-bandwidth signal transmission - Long-distance single-mode fiber runs **Flexibility & Support** Custom lengths available for specialized installations. Multiple US warehouse locations (Danville CA, Fort Worth TX, Beaufort SC) ensure rapid fulfillment. Free standard shipping on orders over $99 reduces total acquisition costs. 90-day limited warranty provides peace of mind. **Maintenance Notes** Keep connectors clean and protected with dust caps when not in use. Avoid excessive bending beyond the cable's minimum bend radius to preserve performance. Store in climate-controlled environments to maintain optical properties.