In , 'Doc wrote:



Jim,
In your example about range, the range wouldn't
be 6 miles, it would 3 miles. The radius of the
coverage area has to overlap the transmitter/receiver.
So, if two radios each have a range of 3 miles that
does not mean the total range between radios is 6 miles.
'Doc

In his example the range is limited by the curvature of the earth. That means if
a person's eyes are five feet above the earth he can see the feet of someone
three miles away, but he can also see the eyes of someone six miles away peeking
over the horizon. So if the radios will talk line-of-sight, the range between
them is six miles when they are both held five feet above the ground.





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