Figure 2-9. Earth's curvature correction chart

Multichannel Radio Systems
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(a) Determine

the

scale

for

the

elevation

and

distances

involved.

(b) Draw a line on the terrain map between the two sites.

Figure 2-9.

Earth's curvature correction chart

your linear graph as in figure 2-10.

(d) Draw a line on the graph from terminal A (0 miles/km) and

terminal B (28 miles/45 km).

(e) You must correct for the curvature of the Earth to obtain

a true picture of the LOS.

Select a high or low point as near as

possible to the halfway point.

In figure 2-10, X indicated that

point. By means of the figures found on the

2-15

SS0016

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