CHA-250 universal UNUN, broadband resistance transformer
Legends say that this UNUN is capable of matching any single-ended antenna to any single-ended line in any frequency range. Is it so?
Video course "Antennas" http://crit1.ru/Antennas/
Fractal antennas and delay lines http://crit1.ru/fractal/
Power Amplifiers http://crit1.ru/um/
Complex of lessons "Electricity" https://goo.gl/9ueS3X
Fundamentals of electronic generators http://crit1.ru/electonicgenerators/
Mini-course "Build Up Blocks" http://crit1.ru/MiniBlocks/
Instructions for assembling voltage converters http://crit1.ru/preobraz/
VK group https://vk.com/crit1
Project "Scientific Criticism" - http://www.crit1.ru