RH770 Dual Band VHF/UHF 144MHZ/430MHZ SMA Male antenna for Yaesu VX-3R two way radio walkie talkie Connector: SMA-M Max power: 20W Frequency: 144/430MHz Impedance: 50 Ohm Gain: 3.0dBi (144MHz)/5.5dBi (430MHz)