Hey, Which Coaxial Cable Should I Use?
Coaxial cables are the most popular form of transmission line for getting our signals to and from our antennas. There…
Ham Radio School Articles
Discover, think, learn.
Working DX
One way to work a lot of DX on a weekend is to participate in a DX contest on the…
Transformers (G5C06)
The 2019-2023 General License question pool includes questions about the function of electrical transformers: G5C06: What is the RMS voltage…
Transformer Windings Diameters (G5C16)
The 2019-2023 General License question pool asks about the diameters of transformer windings, comparing primary to secondary: G5C16: Why is…
Bleeder Resistors (G7A01)
The 2019-2023 General License question pool requires that you understand the purpose of a power supply bleeder resistor: G7A01: What…
Vacuum Tubes (G6A10)
The 2023-2027 General License question pool asks about the inner workings of vacuum tubes used as amplifiers: G6A10: Which element…
Op Amps (E7G12)
The 2020-2024 Extra License question pool wants to ensure you know a thing or two about operational amplifiers, an analog…
Spectrum Analyzer (E4A02)
The 2020-2024 Extra License question pool asks you to identify characteristics of a spectrum analyzer, a common RF engineering signal…
Liquid Crystal Displays
Liquid-crystal display on Icom IC-7100 transceiver, incorporating touch screen controls. (Courtesy Icom America) If you have never seen a liquid-crystal…
Complex Impedance Part 1: Just a Passing Phase
One of the more advanced topics in amateur radio electronics, and one that is often difficult for students to fully…
