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.  

Check out Modernsurvivalonline.com article regarding ham radio ranges. 

How Much Range Can You Get From a Ham Radio?