Chapter 5:

Waves, Wavelength, Frequency, and Bands

Objectives:

This lesson introduces the students to:

Apparatus:

Handouts:

Lesson Plan:

Students can do a large part of this chapter on their own. However there are few concepts for you to stress.

  1. Go over the homework from Chapter 4.

  2. Use the oscilloscope to illustrate the terms Amplitude, Frequency, and Wavelength. Emphasize the inverse relationship between frequency and wavelength.

  3. Have the class do Chapter 5 quiz questions 8, 9, and 10 in class.

  4. Touch on the relationship between frequency and wavelength for electromagnetic waves and the short version.

  5. Emphasize the conversion of kHz to MHz, MHz to kHz.

  6. The section on bands the students can do on their own. Tell them that some of this will come back to haunt them when they do the section of Regulations.

  7. Using slide 3, discuss what modes and equipment would be typically used on each of these bands. Reinforce the relationship between the frequency of the band and the propagation characteristics. (HF, VHF, etc)

Homework

  1. Read Chapter 5.

  2. Do the Chapter 5 Quiz. If you elect to do this chapter over two classes then you will have to break this quiz up into two parts.

  3. Skim Chapter 6.

Chapter 5 Quiz:

Printable copy of the Review Quiz

Answers to Chapter 5 Quiz
1 C 4 A 7 C 10 A * *
2 C 5 A 8 B 11 D * *
3 D 6 D 9 C * * * *

Overhead Slide Versions of the Diagrams

  1. Slide 1
    5.1 Waves - Crest, Trough and Amplitude
    5.2 Waves - 1 Complete Cycle
    5.4 Wavelength

  2. Slide 2  (Relationship between Time and Frequency)
    5.3 One Cycle and 7 Cycles per Second
    5.5 Cycles of Long and Short Wavelength

  3. Slide 3
    5.6 Spectrum Allocation, HF bands
    5.7 Spectrum Allocation, VHF Bands