Lewong Car Radio Mobile/Station High Gain Antenna Dual Band U/V 144/430MHz 25W (Pack of 1) Connector: UHF/SL16/PL259-M/J; Frequency: Dual band 136-174MHz&400-470MHz 2.15/3.5dBi ;Max power: 25W: : Boost the signal of your radio significantly Easy to install, plug and play installation;It is a great add-on/improvement for your radio Length Approx: 11.9cm: better antenna is capable of boosting weak frequencies 45 days without reason return,Please try it