146/223/446 MHz.Tri-Band Handheld Antenna, RX:118~160,180~280,360~520 MHz (Gain:144 Mhz.1.3dBi 1/4 wave,220 MHz.1.4dBi 1/2 wave,440 MHz. 1.8dBi 5/8 wave,Max Power:10W,Length:11") SMA.