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ECLM Chapters ECLM Homepage Introduction Operating Practices Rules and Regulations Electrical Principles Components and Building Blocks Electronic Circuits Radio Signals and Measurements Radio Modes and Equipment Antenna and Feed Lines Topics in Radio Propagation Safety   ARRL Products: Technical, Electronics, and Communications Reference (More) Basic Antennas -- An introduction to antennas--basic concepts, practical designs, and easy-to-build antennas! The ARRL Antenna Book -- The ultimate reference for Amateur Radio antennas, transmission lines and propagation. Fully-searchable CD-ROM included. 21st edition. MFJ 20-meter CW Cub Transceiver Kit -- Now Shipping! -- Enjoy countless hours operating this tiny high performance QRP Transceiver. The ARRL Handbook for Radio Communications -- Now Shipping! -- THE standard in applied electronics and communications -- The BIGGEST Handbook EVER! ARRL's Low Power Communication with 40-meter CW Cub Transceiver Kit -- Build and operate low-power radio gear--the QRP way! 3rd Edition. Includes the 40-meter CW Cub Transceiver Kit.

Chapter 4 – Electrical Principles &
Chapter 5 – Components and Building Blocks

Chapters 4 and 5 take you beyond the introduction to electronics that you mastered to pass your General Class exam. This is the most detailed part of the exam, so take your time with your studies and be sure you understand the material. Background material is provided to support the topic in the license study guide.

Electronics Math and Basic Concepts

• Math supplement  - online tutorials and articles on a variety of math topics common in radio
• ARRL Technical Information Service (TIS) - numerous Web resources and magazine articles on technical topics of interest to all hams
• The ARRL Handbook - the oldest and best radio handbook around
• Understanding Basic Electronics - introduction to the electronics of radio

 Transistors and Diodes

• Diodes - all about the diode
• Bipolar Junction Transistor (BJT) - all about PNP and NPN transistors
• Field-Effect Transistor - this article links to detailed treatments of all of the variations of the FET

Integrated Circuits

• Digital logic - this is a good overview of digital electronic circuits

Optoelectronics

• Optoelectronics - an article that discusses devices that make use of both photoconductivity and the photoelectric effect