Propagation

• An electric field is the force resulting from electric charges
• Field strength is measured in volts/meter (V/m), and is inversely proportional to distance from the source, i.e. at twice the distance the field strength is halved
• Field strength may also be expressed as Power Density in Watts/meter² (W/m²).  Power Density is proportional to the inverse of the square of the distance from the source, i.e. as twice the distance power density is a quarter

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