LMR-400 UltraFlex is a Low-Loss Coaxial Cable. A Premium 50ohm highly flexible drop-in replacement for traditional RG-8, it features a stranded center conductor and a rugged Thermoplastic Elastomer (TPE) jacket for repeated bending without signal degradation.
Core Characteristics & Specifications
- Impedance: 50 Ohms
- Outer Diameter: ~0.405 inches
- Center Conductor: Stranded bare copper
- Shielding: 100% bonded foil + braided shield (typically 86%–88%)
- Jacket: Thermoplastic Elastomer (TPE) / Rubber
- Temperature Rating: -40°C to 85°C
Key Performance Benefits
- Minimal Signal Attenuation: These cables yield far less signal loss over long runs compared to legacy cables. For example, in the 400-900 MHz, signal loss is typically around 3-4 db per 100 feet. This is 2-3 db better then RG8
- Extreme Flexibility: Unlike standard LMR-400 (which has a solid center conductor and a rigid polyethylene jacket), the UltraFlex version utilizes a stranded center and rubber-like jacket, allowing for a much tighter bend radius (e.g., 90-degree bends in under an inch) with zero loss.
- Outdoor & Indoor Durability: The TPE jacket provides high weatherability, effectively resisting UV rays, moisture, and oxidation for a long lifespan (often 10 to 20 years in outdoor applications)
