Designing Coiled Coax “Ugly” Baluns

Presented by John Portune, W6NBCCoiled Coax Baluns are a familiar term in the world of ham radio, but not many hams know how to design them for maximum efficiency. The Internet offers many designs and can be confusing, so this presentation will help you learn the following: (1) The main function of a balun; (2) Calculating, and not guessing, at the amount of coil needed; (3) Self Resonance and frequency limitations. The presenter is the February 2021 QST Cover Plaque Award winner for his article “Create Your Own 1:1 Coax Choke Balun.”Tuesday, July 8, 2021 @ 8 pm EDT (0000 UTC on Friday July 9)