by Rajesh Kakkad | Jul 24, 2022 | Amateur Radio Theory
Quantities and units. Electricity is a difficult substance to appreciate with the human senses. About the only way you get a feeling for it is to moisten the tongue and apply it between the terminals of a 9 volt battery. Of course, you get more idea if you are...
by Rajesh Kakkad | Jul 24, 2022 | Amateur Radio Theory
Semiconductors: Diodes & Transistors In the early days of electricity there were only two groups of material: insulators and conductors. Insulators are matters, which do not allow the flow of electric current through them. Glass, porcelain, dry air and dry wood...
by Rajesh Kakkad | Jul 24, 2022 | Amateur Radio Theory
FM stands for Frequency Modulation. It means that the RF-frequency will change according to the input audio signal. Example: A FM radio signal at 105.1MHz will not be exactly stable at 105.1MHz, The audio signal in the RF will modulate (change) the frequency for about...