The JBX42688 85m FC/APC to LC/UPC Duplex Singlemode Fiber Patch Cable represents professional-grade connectivity for demanding telecommunications and data center applications. Engineered with precision manufacturing standards, this cable delivers exceptional performance for organizations requiring reliable, high-speed fiber optic signal transmission over extended distances. **Technical Specifications:** This duplex patch cable features a 9/125 singlemode core with G.657.A1 glass fiber construction, ensuring minimal signal degradation. The cable achieves insertion loss of ≤0.35dB (typical 0.15dB) and return loss exceeding 20dB, making it suitable for sensitive optical communications. At 1310nm, attenuation measures 0.25dB/km; at 1550nm, 0.35dB/km—well within industry standards. **Key Features:** The Type A to B crossover polarity configuration supports standard duplex patch cord applications. OFNR (Optical Fiber Non-conductive Riser) rated jacketing ensures compliance with building safety codes while the 1.8mm outside diameter provides flexible installation in tight spaces. The bright yellow jacket enhances visibility and organization in complex network environments. **Compliance & Quality Assurance:** TAA compliant for GSA Schedule and government procurement requirements. Manufactured to ANSI/TIA/EIA-455-171-A-2001 standards with attenuation verification. RoHS/ELV directive compliance ensures environmental responsibility. Backed by a 90-day limited warranty. **Flexibility & Customization:** While this cable is available in the standard 85m length, custom lengths are available upon request for specific installation requirements. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders exceeding $99. **Applications:** Ideal for telecommunications networks, data centers, campus networks, and any environment requiring long-distance singlemode fiber connectivity with guaranteed performance and reliability.