ElectronicsNotes website and YouTube channel provide valuable information, know-how & experience for electronics & radio enthusiasts & students. Circuits, diagrams, videos, calculators and much more . . The site provides information on electronic circuits, electronic components, basic concepts, constructional techniques test instruments & test methods including DMMs, spectrum analysers, etc. . , as well as antennas & propagation, radio technology, ham radio, and there is a section covering the history of electronic and radio technology. Written and managed by widely respected and very successful author and engineer Ian Poole, the YouTube channel and website are packed with information and insight into electronic and radio technology.Electronics Notes website: https://www.electronics-notes.comSubscribe to us at: https://www.youtube.com/ElectronicsNotes