It is used to reduce the Voltage Standing Wave Ratio (VSWR) and enhance the antenna gain and then improve the receiving sensitivity.Items Description:? All of our items are Brand New.? Model: RE-02.? Frequency: 10-1300MHz.? Wide range of applications.? It can effectively enhance the signal.? Connector: UHF- K/F(Female) TO UHF-P/M(Male).? Length of antenna: 10cm X 3(uhf) and 15cm X 3(vhf).? Color: Black.? Weight: 90g. Package Includes:? 1 X NAGOYA RE-02 UHF-F Mobile Antenna Ground For Car Radio