Sirio Antenna Sirio New Vector 4000 27-28.5 Tunable Base Antenna<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Base station antenna omnidirectional tunable by whip length adjusting high power handling capability </span></li><li><span class="a-list-item"> Type: 3/4 coaxial J-pole Frequency range: tunable from 27 to 28.5 MHz </span></li><li><span class="a-list-item"> Bandwidth @ SWR 2: 1400 KHz SWR @ res. freq.: 1.2 Max </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/21BBQahM4lL.jpg" noproxy>