How Much Range Can You Get From a Ham Radio?

Many radio manufacturers claim misleading range distances based on a hypothetical antenna called isotropic antenna.  An Isotropic antenna is a hypothetical antenna radiating the same intensity of radio waves in all directions. It thus is said to have a directivity of 0 dBi (dB relative to isotropic) in all directions.  However,  the range you get from an radio varies based on a lot of factors such as the frequency in use,  Atmospheric conditions,  Your locations,  Radio Power,  etc. has a great article regarding ham radio ranges.

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