Vocademy
Electronics Technology
Communications Circuits
Part 1: Early Electronic Communication
Lesson 1
Reading Assignments
The Telegraph System
The Telephone System
Video Lectures
Other Videos
Emile Baudot Printing Telegraph (teletype)
Teletype ASR 33 Part 10: ASR 33 Demo
The Secret Life of Machines: The Telephone
AT&T Archives: The Step-By-Step Switch
Part 2: Radio Concepts and Circuits
Lesson 1
Reading Assignments
Electromagnetic Waves
Radio Transmitters
Modulation
Early Radio Recrivers
Sidebands and Bandwidth
The Superheterodyne Recriver
Overmodulation
Video Lectures
When EM Waves Have no Energy - Answers to Questions
Lesson 2
Reading Assignments
Sideband Radio
Frequency Modulation and FM Stereo
Video Lectures
Part 3:
Lesson 1
Reading Assignments
Transmission Lines
Antennas
Video Lectures
Part 4: Hands-on Project
Lesson 1
Reading Assignments
Laser Communicator (in progress)
Video Lectures
Laser Pointer Teardown and Test