A vertical antenna project for POTA operations. This shortened antenna is aimed to work from 20 to 40 meter band implementing a loading coil, with an additional wire lenght, determined by on field testing and tuning.
The purpose of the Moon tracking DLL is to provide an easily used platform for the calculation of the position of the sun or the moon and to provide the associated information often required for amateur radio operators interested in EME. DLL works with any of Windows versions of Delphi, Visual Basic, C and versions.
A group of amateur radio operators who use a specific telegraph key called a sideswiper or cootie key. The sideswiper is a single lever with contacts on both sides, allowing for sending Morse code by pushing the lever in one direction or the other. The group runs informal radio nets to promote the use of this key, and welcomes anyone who uses a sideswiper to join them
This paper by Leif Asbrink (SM 5 BSZ) presents a practical approach to designing very high gain Yagi antennas, focusing on the “brute force” optimization method. The method, described in a previous article, ensures convergence independent of initial guesses. The paper provides detailed tables of element lengths and positions for Yagi antennas optimized for 144.1 MHz with a 50-ohm feed point impedance, aiming for minimal losses and high accuracy in comparisons.
A personal web site with high quaulity content and layout provided by DJ5IL a passionate, genuine and outspoken classic style amateur radio operator. The design of his website aims to reflect my attitude and to spark some fascination and appreciation for the roots and virtues of the amateur radio hobby.
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