... with high quality 4)competitive price 5))good after service Electrical Performance1, Frequency Range DC~4GHz2, Impedance 50 Ohms3, Voltage Rating ... Max.6, Insulation Resistance 5000 M Ohms7, Dielectric Withstanding Voltage 1500V r.m.s, at sea level.8, ... brass2, Center ContactsMale Pin Nickel or gold-plated brassFemale socket gold-plated beryllium copper alloy3, Insulator PTFE4, Gaskets silicone ...