The Most Popular Handheld Duck Antenna High gain dual band 144/440 MHz Flexible Duck antenna. 15 ¾" long, its 15 ½ wave on 440 MHz that gives a hearty 2.15 dBi gain. On 2 Meters you get an efficient full size ¼ wave precisely factory tune for low SWR. High-Q, low loss construction.

- SMA Male Connector