Stu WØSTU
Field Day Weekend! What's it all about?
Field Day weekend is coming up! Find your local field day event and have fun with hams. Here's what it's all about.
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Bob KØNR
Feb 6, 20229 min read
Get the Right Signal Tone
DTMF, CTCSS, DCS, Tone Burst... What are they and which do you need for a given situation? Learn about the variety of signal tones.
24,037
Bob KØNR
Jan 31, 20224 min read
Simplex, Duplex, Offset and Split
Learn the differences among these operating modes and terms, and understand typical operating conditions for each.
25,935
Bob KØNR
Jan 22, 20226 min read
What Frequency Do I Use on 2 meters?
Learn how to stick to the voluntary band plans on 2-meters and avoid interference.
93,078
Stu WØSTU
Jan 20, 20223 min read
Standard Phonetic Alphabet (T2C03)
T2C03 from the 2018-2022 Technician License Course Section 2.3, Call Signs: T2C03: What should be done when using voice modes to ensure...
7,911
Bob KØNR
Jan 18, 20223 min read
Hey, Which Coaxial Cable Should I Use?
A comparison of common ham radio coaxial cable types and signal loss.
86,838
Bob KØNR
Jan 16, 20224 min read
Working DX
Contest weekend? Learn common contest practices and how to snag DX stations.
3,106
Stu WØSTU
Jan 16, 20223 min read
Op Amps (E7G12)
The 2020-2024 Extra License question pool wants to ensure you know a thing or two about operational amplifiers, an analog integrated...
715
Stu WØSTU
Jan 16, 20222 min read
Part 15 Devices
Part 15 of Title 47 of the Code of Federal Regulations regulates low power, unlicensed devices that can cause interference on the ham...
490
Stu WØSTU
Jan 16, 20223 min read
Spectrum Analyzer (E4A02)
The spectrum analyzer provides a frequency domain view of signals, while an oscilloscope displays the time domain. Learn the difference.
1,733
Stu WØSTU
Jan 16, 20223 min read
Liquid Crystal Displays
Ever wonder how that LCD on your radio works? Get the fundamentals on liquid crystal display functionality.
632
Stu WØSTU
Jan 16, 20222 min read
Vacuum Tubes (G6A10)
Get amped up on vacuum tubes' structure and function with this question pool item.
1,699
Stu WØSTU
Jan 16, 20222 min read
Bleeder Resistors (G7A01)
The 2019-2023 General License question pool requires that you understand the purpose of a power supply bleeder resistor: G7A01: What...
523
Stu WØSTU
Jan 16, 20223 min read
Transformer Windings Diameters (G5C16)
Transform your understanding of transformers and their wire windings.
863
Stu WØSTU
Jan 16, 20223 min read
Transformers (G5C06)
The 2019-2023 General License question pool includes questions about the function of electrical transformers: G5C06: What is the RMS...
837
Stu WØSTU
Jan 15, 20223 min read
Capacitive Reactance (G5A06)
Understand the dynamics of capacitive reactance - how AC reacts to a capacitor.
748
Stu WØSTU
Jan 15, 202212 min read
Complex Impedance Part 3: Putting It All Together
In Part 1 of this series, Just a Passing Phase, we defined the sine waveform of the most common AC signals, illustrated how AC voltage...
3,212
Stu WØSTU
Jan 15, 20228 min read
Complex Impedance Part 2: Reacting Nicely!
In Part 1 of this series, It’s Just a Passing Phase, we defined the sine waveform of the most common AC signals, illustrated how AC...
1,371
Stu WØSTU
Jan 15, 20229 min read
Complex Impedance Part 1: Just a Passing Phase
A 3-part examination of complex impedance.
2,480
Stu WØSTU
Jan 15, 20222 min read
Semiconductor Materials
Understand the basic science of semiconductor materials from which myriad electronic devices are made.
248
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