How high is that antenna or tower? A $10 device to see.
Posted: Fri Mar 01, 2024 10:16 pm
How high is your tower, or the tree that supports your antenna?
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You could look at the manual, if there is one. Or, from a known distance, measure the angle from horizontal to the top. A little very simple math completes the trick:
(Don't try to read this post without signing in; it will mean nothing without the pictures. Sign-in is quick and easy.)
You could look at the manual, if there is one. Or, from a known distance, measure the angle from horizontal to the top. A little very simple math completes the trick:
…login to view the rest of this postTo measure the heights and distances of different objects, we use trigonometric ratios.
Use the Tangent rule to calculate the height of the tree (above eye level).
tan(angle) = opposite/adjacent
Where the opposite is the height of the tree and adjacent is the distance between you and the tree.
This is rearranged to:
opposite = tan(angle) x adjacent
or more simply
height=tan(angle)×distance
Distance can be calculated as:
B (distance)=A (height)tan (e)
Therefore, to calculate B
(distance) we will need the value of A (height) and ang