Description Blackhawk BH-400FR Cable Roll Drums Electrical Specifications Capacitance (PF/m) Nom. 78 Impedance(ohm) 50±2 Velocity (%) 85 Dielectric Resistance (MΩ·km) 5000 Dielectric Strength (KV) 2.5 Jacket Spark Test Voltage (KV) 5.0 Inner conductor DC resistance (Ω/km) 4.56 Outer conductor DC resistance (Ω/km) 6.069 Mechanical Specifications Operating Temp. (℃)  -40 to 85 Bending radius once (mm) 25.4 Flexible application radius (mm) 101.6 RoHS/ REACH Compliant