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…
Radio Science (24)
RMS Voltage (G5B09)
The 2023-2027 General License question pool requires you to compute RMS voltage from peak voltage in an AC sine wave…
D-layer Absorption
We learn in Technician Class and General Class studies that the ionosphere’s D layer is created in the daytime by…
Skip Signal Fade (T3A08)
The 2022-2026 Technician License question pool notes that signals propagated through the ionosphere, or "skip" propagation, often fade in and…
Inductors (T6A06)
The 2022-2026 Technician License exam pool has a couple of questions about inductors. We'll elaborate on a question here about…
Technician Figure T-1
The 2022-2026 Technician License question pool contains five questions referencing figure T-1 below. Let's get a solid understanding of the…
Series & Parallel Component Calculations (G5C04)
The 2019-2023 General License exam pool requires some calculations of equivalent component values, such as a single component that is…
Digital Signal Processing
Manufacturers love to brag about it… Operators tend to love the convenience of it… But very few beginner amateurs have…
