The JBX43606 4-meter FC/APC to ST/UPC simplex singlemode fiber patch cable represents a critical component for modern fiber optic networks requiring precision and reliability. Built with a 9/125 micron singlemode core compatible with G.657.A1 specifications, this cable delivers the performance characteristics necessary for high-speed data transmission in telecommunications, data centers, and enterprise networking applications. **Superior Performance Characteristics** This cable achieves exceptional signal fidelity with insertion loss of ≤0.35dB (typical 0.15dB), minimizing signal degradation over the 4-meter run. Return loss measurements of ≥20dB ensure minimal signal reflection at connection points. Attenuation performance meets demanding standards at both 1310nm and 1550nm wavelengths, making this cable suitable for DWDM and other wavelength-division multiplexing applications. All performance metrics are verified through rigorous testing per ANSI/TIA/EIA-455-171-A-2001 standards. **Construction and Durability** The cable features OFNR (Optical Fiber Nonconductive Riser) rated jacketing, providing excellent flame resistance and smoke density control for indoor installations. The 1.8mm outside diameter offers space-efficient routing without compromising durability. The bright yellow outer jacket facilitates rapid identification in complex patch panel environments, reducing installation time and minimizing connection errors. **Compliance and Standards** TAA (Trade Agreements Act) compliance ensures this cable meets all federal procurement requirements, making it suitable for government contracts and sensitive applications. RoHS and ELV compliance demonstrates commitment to environmental standards and hazardous substance reduction. Manufacturing locations in Taiwan, United States, and China provide supply chain resilience. **Applications and Use Cases** Ideal for connecting FC/APC equipped transmitters to ST/UPC equipped receivers in point-to-point fiber links, network backbone implementations, and telecommunications infrastructure. The simplex configuration supports unidirectional signal transmission, perfect for applications utilizing dedicated transmit and receive paths. **Custom Options Available** Beyond the standard 4-meter length, custom cable lengths are available to accommodate specific installation requirements. This flexibility ensures you obtain precisely the cable length needed, eliminating waste and optimizing performance. **Warranty and Support** Backed by a 90-day limited warranty and fast shipping from multiple US locations, this cable provides both reliability and convenience. Free standard shipping applies to orders exceeding $99.