Ham Radio School

Field Day weekend is coming up! Find your local field day event and have fun with hams. Here's what it's all about.

DTMF, CTCSS, DCS, Tone Burst... What are they and which do you need for a given situation? Learn about the variety of signal tones.

Learn the differences among these operating modes and terms, and understand typical operating conditions for each.

Learn how to stick to the voluntary band plans on 2-meters and avoid interference.

T2C03 from the 2018-2022 Technician License Course Section 2.3, Call Signs: T2C03: What should be done when using voice modes to ensure...

A comparison of common ham radio coaxial cable types and signal loss.

Contest weekend? Learn common contest practices and how to snag DX stations.

The 2020-2024 Extra License question pool wants to ensure you know a thing or two about operational amplifiers, an analog integrated...

Part 15 of Title 47 of the Code of Federal Regulations regulates low power, unlicensed devices that can cause interference on the ham...

The spectrum analyzer provides a frequency domain view of signals, while an oscilloscope displays the time domain. Learn the difference.

Ever wonder how that LCD on your radio works? Get the fundamentals on liquid crystal display functionality.

Get amped up on vacuum tubes' structure and function with this question pool item.

The 2019-2023 General License question pool requires that you understand the purpose of a power supply bleeder resistor: G7A01: What...

Transform your understanding of transformers and their wire windings.

The 2019-2023 General License question pool includes questions about the function of electrical transformers: G5C06: What is the RMS...

Understand the dynamics of capacitive reactance - how AC reacts to a capacitor.

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...

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...

A 3-part examination of complex impedance.

Understand the basic science of semiconductor materials from which myriad electronic devices are made.