points P and Q. A radio repeater needs to be placed between points A and B. In path D, you can
clearly see there is no intervening terrain or obstacles between points N and O. There is LOS in
this profile and there would probably be good reception.
Figure 2-4. Completed LOS profile
f. LOS exercise. A profile where LOS exists is shown in Figure 2-5, page 2-8. The
following exercise illustrates the procedure for determining whether LOS exists using nonlinear
graph paper.
(1) You are the S3 of a signal battalion who has to conduct a manual profile to
determine if LOS exists between points A and B. You know the following information:
Elevation at point A
130 metes
Elevation at paint B
136 meters
Antenna heights at both sites
50 meter
Distance from point A to point B
40 kilometers
2-7
SS0121
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