250ft RG400 Double Shielded Bulk 50 Ohm High Temperature Coax Cable, RG-400-250 RG400 is a high performance double shielded coaxial cable that is know for its stability in high temperature environments.This coax has an outside diameter of 4.95mm, with Max. Operating Frequency of 12.4 GHz, can be used in Ham Radio, Telecom Applications, wireless communication, broadcast .... ** Our Customers also used this RG400 Coax to make ham radio common mode chokes Physical Specifications: • Inner conductor: Silver Plated Copper, Diameter: 19x0.203mm • Dielectric/Insulation: PTFE, Diameter: 2.95mm • Outer Conductor/Double-Shield: silver plated copper double braid , Diameter: 3.95mm • Jacket: FEP, Diameter: 4.95mm Electrical Specifications: • Nom. Capacitance Conductor to Shield: 105 pF/m • Nom. Characteristic Impedance: 50 Ω(ohm) • Nom. Velocity of Propagation: 70% • Min. Bend Radius(Install): 25mm • Voltage Rating: 1900 VMS • Max. Operating Frequency: 12400 MHz • Operating Temperature Rating: -55℃ ～ +200℃ Attenuation: • 100 MHz : 0.144 dB/m • 400 MHz : 0.295 dB/m • 1,000 MHz : 0.482 dB/m • 5,000 MHz : 1.184 dB/m • 11,000 MHz : 1.899 dB/m Specifications: 250ft RG400 Double Shield Bulk Coax Cable Conductor: Silver Plated Copper Jacket: Flourinated Ethylene Propylene (FEP) O.D. : 4.95 mm Length: 250 feet CablesOnline Part Number: RG-400-250