On my website I offer both J-Pole and. Antenna 3db Beamwidth Calculator. J Pole Antenna Calculator This will determine how you build it. . Black Hole Gravitational Redshift Calculator. Here is a 70cm. Enter Frequency MHz The J Pole antenna is a. 14694 MHz Measurements 95 Velocity Factor for Copper Pipe. Mouse over image for J-Pole version The choke. Web February 18 2019 December 29 2018. Web HAAT Calculations. J-Poles with Wireman-cables for the quarterwave matching section working on VHF and HF bands. Web J-Pole Antenna Calculator. Web So the J-Pole is simply a 12 λ vertical on the top Section A with a 14 λ matching section below Dection B. Web Enter the required frequency in MHz and the antenna designer will calculate the dimensions of the elements as shown below. Which antenna will work best for me. The 12 λ vertical section is calculated using 468F Mhz. Web Wireman-J-Po...