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:…
Dipole Impedance (G9B08)
The 2019-2023 General License question pool asks about the effects on impedance of moving dipole antenna's feed point: G9B08: How…
Yagi Antenna Driven Element (G9C02)
The 2023-2027 General License question pool seeks the length of a Yagi antenna's driven element: G9C02: What is the approximate…
Log Periodic Antenna (G9D06)
The 2019-2023 General License question pools asks about the advantage of a log periodic antenna: G9D06: Which of the following…
Antenna Q Factor
You’ve probably heard the term “Q factor” tossed around in describing antennas, but maybe you haven’t quite yet picked up…
