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The range spec is 20 miles with line of sight. How line of sight is that?

April 26, 2017line miles range sight Spec

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The range spec is 20 miles with line of sight. How line of sight is that?

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Line of sight is just that – if you stand at one end of a link with a pair of binoculars or a telescope can you see the other end? Line of sight means that there are no obstructions in the way. Keep in mind that with normal curvature of the earth you will be out of line of sight at 20 miles if both end points are at sea level.