Product Specifications Product Name: BNC Male Connector Telescopic Antenna 7 Sections. Total Length of Antenna: 165mm Extended Total Length: 685mm Antenna Diameter: Approx 7mm Color : Silver Tone Section:7 Sections Connector Type : BNC Male Characteristic Impedance: 50Ω Frequency Range: DC 12.4GHz (Semi-rigid Cable 0 18GHz) Working Voltage: 335V Max (Effective Value) Withstand Voltage: 1000V rms (Minimum Value at Sea Level) Inner Conductor Resistance: 3 mΩ Outer Conductor Resistance: 2 mΩ Insulation Resistance: 5000 MΩ Insertion Loss: 0.15 dB/6GHz Uesd for CB Radio Scanner Amateur Radio Two-Way Radio Mobile Scanner FM Transmitter Wireless Microphone Receiver. Package:1 x BNC Male Connector Telescopic Antenna Net: 28.6g