Basic Radio Awareness
Introduction to Radio Communications Principles All forms of communication follow the same basic principles. In this first chapter, we explore those principles and the different ways in which people communicate. We also look at radio waves and learn how radio technology is able to make your voice heard many miles away. Lesson Topics What is Communication? What is a radio wave? What is propagation? How do repeaters work? WHAT IS COMMUNICATION? Topic Progress: Communication begins when somebody wants to convey information to somebody else. That information must be presented as some kind of pattern. For example, speech is a pattern, smoke signals are a pattern, talking drums are a pattern, telephone calls are pattern, Morse code is a pattern. These patterns then travel over a communication channel, typically involving a medium. For instance, smoke passing through air, electrical signals passing through wire, or speech passing through the atmosphere as a series of pressure waves.