Capacitive Reactance (G5A06)
The 2019-2023 General License question pool asks about capacitive reactance: G5A06: How does a capacitor react to AC? A. As…
RMS Voltage (G5B09)
The 2023-2027 General License question pool requires you to compute RMS voltage from peak voltage in an AC sine wave…
Automatic Repeat Query (G8C07)
The 2019-2023 General License question pool touches on the digital mode concept of the automatic repeat query, or ARQ: G8C07:…
PSK31 Varicode (G8C08)
The 2019-2023 General License question pools includes a question about the type of encoding used with the PSK31 digital mode:…
DX Techniques (E3A06)
The 2020-2024 Extra License question pool asks a deep question about DX techniques requiring some good knowledge of propagation science:…
Carson's Rule (G8B06)
The 2023-2026 General License question pool requires the use of Carson's Rule to estimate the bandwidth of an FM phone…
Direct Digital Conversion (E7F01)
The 2020-2024 Extra License question pool asks for the definition of direct digital conversion in a software defined radio: E7F01:…
dBi vs. dBd (G9C04)
The 2023-2027 General License question pool wants you do differentiate between dBi and dBd when it comes to antenna gain:…
