Propagation

• The speed at which the wave travels (propagation velocity) depends on the medium in which it is travelling
• In free space it travels at the speed of light (300 × 10⁶ m/s).  In air velocity is slightly less
• velocity = frequency × wavelength
  • v = ƒ × λ
  • λ (meters)  =  300 ÷ ƒ (MHz)
• 6 MHz is a wavelength of 50 meters

Course Guide Topics

1. Electric Field
2. Magnetic Field
3. Electromagnetic Field
4. Propagation Velocity
5. Signal Attenuation
6. Atmospheric Layers
7. Ionospheric Layers
8. Ionosphere – diagram
9. Layer Properties
10. Ground and Sky Waves
11. Skip Distance
12. MUF
13. LUF
14. Critical Frequency
15. Fading
16. Sunspots & Flares
17. Troposphere
18. VHF/UHF Propagation
19. Line of Sight Propagation
20. Diffraction