Tri-Band J-Pole. Post #1032.
Tri-Band J-Pole (http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=31088). Accessed on 03 February 2017, 20:10 hrs, UTC . Author: AF6SA. Please click link or insert title URL into your browser search box to read the full article and to download design files. Comment: This tri-band j-pole antenna system is a good choice for radio amateurs who can only erect one antenna structure on their property. AF6SA has designed a fairly compact and lightweight antenna package that can be built with simple tools, some copper pipe, and a few PVC sections. According to AF6SA, the tri-band j-pole covers the 145/220/440 MHz amateur radio bands . The antenna combines the coupled resonator approach of K9AY with quarter wave stubs to achieve low angle radiation. AF6SA provides a link to the NEC -based antenna modeler and optimizer. This would make an excellent weekend project for your club's repeater or for home use. For the latest Amateur Radio news and information, please visit th