Original NA-771 Radio Antenna, SMA Female 15.6" Whip VHF/UHF (144/430MHz) High Gain Antenna for Baofeng, Pofung radios Updated Model - May Require a Rubber spacer (included) and has an extended antenna cover to protect your radio SMA male base from the elements Nagoya antennas are individually Tested to insure proper compatibility with your Radio and Frequencies Extend the range of your communication - most Nagoya antennas will increase your radio's gain by 2.15 dbi or more Radios that are guaranteed to work are the: baofeng888s, Baofeng UV-5R Series, Baofeng UV-82 Series etc It also is compatible with some models of: kenwood, yaesu, wouxun and others