## Amateur Extra Lesson 6.1, Amplifiers, 11th Edition

Here’s your video introduction to Section 6.1, Amplifiers, in the 11th Edition of the ARRL Extra Class License Manual for Ham Radio. Topics discussed include discrete device amplifiers, op amp amplifiers, classes of operation, distortion and intermodulation, and instability and … Continue reading

## Amateur Extra Lesson 5.4, Optoelectronics, 11th Edition

Here’s your video introduction to Section 5.4, Optoelectronics, from the 11th Edition of the ARRL Extra Class License Manual for Ham Radio. It covers photoconductivity, optoelectronic components, and photovoltaic cells. You can find a complete list of the Amateur Extra … Continue reading

## Amateur Extra Lesson 5.2, Display Devices, 11th Edition

Here’s your video introduction to Section 5.2, “Display Devices,” in the 11th Edition of the ARRL Extra Class License Manual for Ham Radio. Topics covered include light-emitting diodes, liquid-crystal displays, and charge-coupled devices. Note that the old manual had material … Continue reading

## Amateur Extra Class Lesson 4.3, Part 2, Principles of Circuits, 11th Edition

Here’s Part 2 of your video introduction to Section 4.3, “Principles of Circuits,” from the ARRL Extra Class License Manual for Ham Radio. This section discusses resonance, Q (quality factor), Properties of components at RF and Microwave frequencies, and magnetic … Continue reading

## Amateur Extra Lesson 4.3, Part 1, Principles of Circuits, 11th Edition

Here’s your video introduction to Section 4.3, “Principles of Circuits,” in the 11th Edition of the ARRL Extra Class License Manual for Ham Radio. Part 1 covers RC and RL time constants, phase angle, complex impedance, and reactive power and … Continue reading

## Amateur Extra Lesson 4.1, Radio Mathematics, 11th Edition

Here’s your video introduction to Section 4.1, “Radio Mathematics,” in the 11th edition of the ARRL Extra Class License Manual for Ham Radio. This section delves into rectangular and polar coordinates, and complex coordinates. The material in this section lays … Continue reading

## Amateur Extra Lesson 3.6, Miscellaneous Rules, 11th Edition

Here’s your video introduction to Section 3.6, “Miscellaneous Rules,” from the 11th edition of the ARRL Extra Class License Manual for Ham Radio. This section introduces rules regarding auxiliary stations, external power amplifiers, Line A and National Quiet Zones, business … Continue reading

## Amateur Extra Lesson 3.5, Volunteer Examiner Program, 11th Edition

Want to be a volunteer examiner (VE)? This video introduction to Section 3.5, “Volunteer Examiner Program,” from the 11th Edition of the ARRL Extra Class License Manual describes how to do so, and how the VE program works. These videos … Continue reading