A Small Solar Power System for Radio Operations
Putting together a small solar power system to power your transceiver is quite simple with modern components, and it is…
Sunspots and Propagation
Here comes the sun! Solar cycle 25 is ramping up beyond expectations at this point in early 2023. The sun…
Variable Propagation Conditions (G3A10)
The 2023-2027 General License question pool inquires about factors effecting propagation of HF signals: G3A10: What causes HF propagation conditions…
Part 15 Devices
Part 15 of Title 47 of the Code of Federal Regulations regulates low power, unlicensed devices that can cause interference…
Chordal Hop Propagation
Amateur radio operators communicate around the globe on the HF bands thanks to signals propagating by ionspheric skip. High layers…
Standard Phonetic Alphabet (T2C03)
T2C03from the 2018-2022 Technician License Course Section 2.3, Call Signs: T2C03: What should be done when using voice modes to…
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…
