The concept of radio waves and frequency is a difficult concept to describe in words. This presentation attempts to explain the concept in visual terms that relate to everyday experiences of most people.  This presentation covers the concepts of spectrum, frequency, signal width and passband.

The zip file contains 3 documents.  The original PPTX file contains the slide deck. Each slide has a notes page with a rough script. In addition, two PDF files are included for those who do not have PowerPoint. One is the full page slide deck. The second is the notes pages.

Feel free to use this presentation to further knowledge of amateur radio.