How high is that antenna or tower? A $10 device to see.

[KX4QC]

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:

To measure the heights and distances of different objects, we use trigonometric ratios.

sneha-heights-and-distances-07-1609418163.png

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:

sneha-heights-and-distances-08-1609418178.png

B (distance)=A (height)tan (e)

Therefore, to calculate B
(distance) we will need the value of A (height) and ang

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