Very interesting article from Vladimir Umanets, UA9BA.
It has been for most of my conscious amateur radio life that I was interested in Log-Periodics. My first LPDA project was student's work in 1976 on practical and theoretical issues of building narrow banded Log-Yagis. My work was partialy based on materials from article in Nov. 1973 issue of QST mag. by Peter Rhodes K4EWG on Log-Yagi for 20m band.
https://dxnews.com/ua9ba-lpda-hybrids/
It has been for most of my conscious amateur radio life that I was interested in Log-Periodics. My first LPDA project was student's work in 1976 on practical and theoretical issues of building narrow banded Log-Yagis. My work was partialy based on materials from article in Nov. 1973 issue of QST mag. by Peter Rhodes K4EWG on Log-Yagi for 20m band.
https://dxnews.com/ua9ba-lpda-hybrids/