The JBX42465 30-meter FC/APC to FC/APC duplex singlemode fiber patch cable represents enterprise-class connectivity for demanding telecommunications and data center environments. Built with a 9/125 micrometers singlemode core and G.657.A1 specification glass fiber, this cable delivers superior optical performance with measured insertion loss of ≤0.35dB (typical 0.15dB) and return loss exceeding 20dB across telecommunications wavelengths. Key Performance Features: This duplex configuration includes two individual singlemode fibers in a compact 1.8mm outside diameter jacket, ideal for tight cable management requirements. Attenuation specifications of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm ensure minimal signal degradation over the cable length. The Type A to B crossover polarity is the industry standard for duplex patch applications, eliminating compatibility concerns. Compliance & Certifications: Full TAA compliance enables use in government and federally-funded projects. RoHS and ELV directive adherence ensures environmental responsibility. OFNR riser-rated jacketing allows installation in building plenums and vertical runs without conduit. Third-party testing validates performance per ANSI/TIA/EIA-455-171-A standards. Installation & Support: The distinctive yellow jacket enables rapid identification during installation and maintenance procedures. Available in custom lengths for specialized applications. Manufactured in Taiwan, the United States, and China with quality control across all production facilities. Ships from strategic U.S. locations including Danville CA, Fort Worth TX, and Beaufort SC for rapid deployment. Applications: Ideal for telecommunications equipment interconnection, data center backbone cabling, telecommunications mainframes, and network switching applications requiring precise single-mode performance. The 30-meter length accommodates medium-distance runs while maintaining signal integrity. Warranty & Service: Comprehensive 90-day limited warranty provides peace of mind for critical installations. Comprehensive testing documentation available upon request. Free standard shipping on orders exceeding $99 reduces total cost of ownership.