Electromagnetic field theory, Characteristics of radio waves, Phase and group velocities, Propagation paths, Boundary conditions, Reflected and refracted waves, The ionosphere, Refractive index, VHF propagation, Scatter propagation, Satellite comunications, Waveguide transmission, Waveguide equation, Rectangular waveguides, Rectangular modes, Circular waveguides, Circular modes, Waveguide attenuation, Launching in waveguides, Stripline and microstrip.