The Most Popular Handheld Duck Antenna High gain dual band 144/440 MHz Flexible Duck antenna 15 3aA? z4 long its 15 1aA? z2 wave on 440 MHz that gives a hearty 215 dBi gain On 2 Meters you get an efficient full size 1aA? z4 wave precisely factory tune for low SWR High-Q low loss construction SMA Female (Reverse SMA) Female SMA Connector that fits Wouxan/Baofeng handheld radios