Stu WØSTU
Zero Beat (G2C06)
The 2019-2023 General License question pool asks for the definition of zero beat as applied to CW operations: G2C06: What does the term...
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Stu WØSTU
Jan 13, 20228 min read
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 on exactly what...
9,447
Stu WØSTU
Jan 13, 20223 min read
Log Periodic Antenna (G9D06)
Learn more about the log periodic antenna's distinct advantages and unique design.
1,762
Stu WØSTU
Jan 13, 20223 min read
Yagi Antenna Driven Element (G9C02)
Learn a bit of the history and the functionality of the popular Yagi directional antenna.
2,852
Stu WØSTU
Jan 13, 20225 min read
Dipole Impedance (G9B08)
Intuitively grasp how dipole antenna feedpoint impedance is related to voltage and current in the antenna.
3,129
Stu WØSTU
Jan 13, 20223 min read
dBi vs. dBd (G9C04)
Understand the difference between these common references for antenna gain.
2,460
Stu WØSTU
Jan 13, 20223 min read
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: What...
1,268
Stu WØSTU
Jan 13, 20223 min read
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 transmission:...
4,015
Stu WØSTU
Jan 13, 20223 min read
DX Techniques (E3A06)
The 2020-2024 Extra License question pool asks a deep question about DX techniques requiring some good knowledge of propagation science:...
1,078
Stu WØSTU
Jan 13, 20223 min read
D-layer Absorption
Learn why the ionosphere's D layer tends to absorb lower HF significantly, and the relationship to NVIS ops.
4,038
Stu WØSTU
Jan 13, 20223 min read
PSK31 Varicode (G8C08)
The 2019-2023 General License question pools includes a question about the type of encoding used with the PSK31 digital mode: G8C08:...
782
Stu WØSTU
Jan 13, 20223 min read
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: How does...
705
Bob KØNR
Jan 11, 20222 min read
Phonetic Alphabets
For clear communications under all conditions, we use a phonetic alphabet for spelling out critical information. Instead of “A B C”, we...
20,383
Stu WØSTU
Jan 11, 20223 min read
Maximum Antenna Structure Height (G1B01)
The 2019-2023 General License question pool asks about the maximum allowable height of antenna structures without requiring special...
8,421
Stu WØSTU
Jan 11, 20229 min read
HF Operations: The Difference with HF
Operating on the high frequency (HF) ham bands in the 3-30 MHz range is markedly different from typical VHF/UHF ops. Learn what to expect.
8,394
Stu WØSTU
Jan 11, 20223 min read
Split Mode Operations (G4A03)
What is meant by split mode? See how split mode helps DXers.
3,989
Stu WØSTU
Jan 10, 20226 min read
Ham-speak: Learning the Lingo
Hams sometimes use a little jargon on the air. Pick up some of the most common ham-speak here!
10,755
Stu WØSTU
Jan 10, 20223 min read
Transmitting Privileges (T1E04)
What determines the bands and frequencies on which a station may transmit? Get the rules and regs on transmitting privileges straight.
2,711
Stu WØSTU
Jan 9, 20223 min read
RF Exposure Factors (T0C04)
The 2022-2026 Technician License question pool inquires about factors effecting RF exposure levels of humans. Let's take a look: T0C04:...
2,977
Stu WØSTU
Jan 9, 20223 min read
RF Burns (T0C07)
The safety questions in the 2022-2026 Technician License question pool asks about touching an antenna during transmission: T0C07: What...
5,736
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