M17/128 Double High Temperature Coaxial RF Cable (12.4GHz) Professional-Grade Flexible Double Shielded Coax – Sold by the Foot The Atlantic Radio RG400 is a high-performance, 50 Ohm coaxial cable engineered for mission-critical RF and microwave applications. As a certified M17/128 Double High Temperature coax, this cable is designed to maintain signal integrity in extreme environments where standard cables fail. It features a sophisticated double-shielded construction that provides superior EMI protection and minimizes signal attenuation, supporting reliable data and voice transmission at frequencies up to 12.4GHz. Built for versatility, the RG400 utilizes a PTFE (Polytetrafluoroethylene) dielectric and a stranded center conductor, offering exceptional flexibility for routing through tight bulkheads, vehicle conduits, or complex rack systems. The outer tan FEP (Fluorinated Ethylene Propylene) jacket is not only abrasion-resistant but also chemically inert, allowing the cable to operate safely in temperatures reaching up to 200°C. This makes it the ideal choice for aerospace, military, and high-power commercial RF setups that require a durable, low-loss interconnect. Whether you are building custom jumpers for repeaters, installing maritime antenna systems, or working on millimeter-wave projects, the Atlantic Radio RG400 provides the electrical stability and mechanical ruggedness required for professional-grade installations. Sold by the foot, this cable allows for precision customization, ensuring you have the exact length needed for your specific RF environment. Key Features & Benefits 12.4GHz High-Frequency Performance: Optimized for wideband applications, including microwave and millimeter-wave transmissions. M17/128 Military Grade: Meets rigorous standards for high-temperature and high-reliability coaxial cabling. Double Shielded Construction: Two layers of shielding provide maximum protection against electromagnetic interference (EMI) and signal leakage. Extreme Temperature Range: Rated for continuous operation up to 200°C, making it perfect for heat-sensitive or industrial engine-room environments. High Flexibility: The stranded 19-wire inner conductor allows for a tight 1-inch repeated bend radius without compromising the 50 Ohm impedance. PTFE/FEP Materials: Combination of PTFE dielectric and FEP jacket ensures excellent chemical resistance and low dielectric loss. Specifications Brand: Atlantic Radio Part Number: RG400 (M17/128) Impedance: 50 Ohm Max Frequency: 12.4 GHz Max Operating Temp: 200°C Velocity of Propagation: 70% Jacket Material: Tan FEP (0.195 in Diameter) Dielectric Type: PTFE Shielding: Double Shielded (2 layers) Center Conductor: Stranded (19 Strands) Minimum Bend Radius: 1.0 in (Repeated) Attenuation at 1 GHz: 14.7 dB per 100ft Max Power at 1 GHz: 600 Watts Compatibility RF/Microwave Military Systems Aerospace Commercial RF What's Included Atlantic Radio RG400 Coaxial Cable (Ordered per foot) Frequently Asked Questions Is this cable suitable for outdoor use? Yes, the FEP jacket is highly resistant to UV, moisture, and chemicals, making it excellent for outdoor antenna runs. How do I order specific lengths? This product is sold by the foot. Increase the quantity in your cart to match the total linear footage required for your project. Which connectors should I use? The RG400 is compatible with standard crimp or solder connectors designed for 0.195-inch diameter coaxial cables (similar to RG142 dimensions). Warranty 1-year manufacturer's warranty
