Very good basic explanations, overview, animations. https://www.youtube.com/watch?v=LmvfphxyRuo Patch (square, half-wavelength) Parabola Yagi-Uda monopole, dipole Horn The Yagi-Uda antenna, commonly referred to as the Yagi antenna, is a directional antenna design widely used in radio communication and broadcasting. It was invented in 1926 by Japanese engineers Hidetsugu Yagi and Shintaro … Read more
Unterminated end reflects in-phase. Terminated end reflects phase inverted. https://www.youtube.com/watch?v=DovunOxlY1k === Wave behavior exhibits several similarities across different types of waves, including mechanical waves (such as sound waves and seismic waves) and electromagnetic waves (such as light waves and radio waves). Here are some of the key similarities in their behavior: 1. … Read more
https://www.youtube.com/watch?v=CnJ7mQ_Fo-8 Book: “LIGHTNING TAMERS” Fathers of vacuum tube / electron valves LEE DEFOREST — https://www.youtube.com/watch?v=CnJ7mQ_Fo-8 EDWIN ARMSTRONG (super heterodyne) — https://duckduckgo.com/?q=vacuum+tube%2C+armstrong REGINALD FESSENDEN — https://en.wikipedia.org/wiki/Reginald_Fessenden First image created by CRT — Maltese Cross. Crookes member of Golden Dawn. Occult all wrapped up in this. One purpose was to contact dead. ERIC DOLLARD talked about this … Read more