![]() ![]() I and my teammates built an 8 element 20 meter band Log-Yagi with 4 element log-cell, 3 parasitic directors and 1 reflector in 1978. That's the Institute that UK9AAN belonged to. The magazine was available in the Chelyabinsk Polytechnic Institute's technical library. by Peter Rhodes K4EWG on Log-Yagi for 20m band. My work was partialy based on materials from article in Nov. ![]() My first LPDA project was student's work in 1976 on practical and theoretical issues of building narrow banded Log-Yagis. It has been for most of my conscious amateur radio life that I was interested in Log-Periodics. I hope these know-hows will help you make your antennas more efficient. There are few know-hows in those models but I am sharing them with you for one reason - I decided that the time to share my knowledge with a larger group of people has come, I no longer want to keep it just for my own use. I will reveal some of my MMANA based antenna files for your own use and further evaluation and improvements of the models. In this article I want to share with you practical results of building LPDAs of different types. Click here to view back cover.Ĭopyright 2014-2020, Universal Radio, Inc.UA9BA hybrids of LPDA and Yagi Udas and other practical examples of multiband antennas Over 30 other amateur radio computer programs are included. But wait - there's more! You also get sample antenna files and other antenna modeling software including EZNEC, MININEC Pro and 4nec2. ![]() This book includes a CD with the MMANA-GAL software so you can get started immediately. This book dispels that provides a straightforward way to design antennas with predictable results. Computerized antenna modeling for many radio amateurs looks like a black art - needing expensive programs that look like you need a degree in astrophysics to get them to work. ![]() By the time you have finished you should be able to model a whole host of antennas including dipoles, the G5RV, the W3DZZ trapped dipole, verticals, off-center fed dipoles (OCFD), magnetic loop antennas and many more. The author provides a step-by-step guide on how to input antennas designs into provided MMANA-GAL program, how to adapt designs you are given and how to optimize your designs for the best performance. An Introduction to Antenna Modeling By Steve Nichols, G0KYA ![]()
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