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 an...