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Refraction is the bending of a RF signal as the signal passes through an object causing the signal to bend in different directions.

Some of the signal may be absorbed and some of the signal reflected. Diffraction though similar to refraction is the bending of the RF signal around an object. Scattering occurs when the RF signal is broken into smaller signals and reflected in many different directions resulting in “ghosting” by mountains or other earth objections. At very high frequencies dust, rain, and smog can cause scattering.

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[tags]refraction,rf signal,ghosting,scattering,frac,diffrac[/tags]