Figure 2.
Functions of radar set AN/FPN-40.
a. The surveillance function detects small aircraft within
a
radius of 25 miles and large aircraft within a radius of 40 miles.
b. The height finder function determines the height of an
aircraft if the aircraft is within 30 miles of the airfield and
between 500 and 50,000 feet in altitude.
c. The final approach function guides the aircraft
along
the
proper glide path and courseline to the touchdown point.
d. The taxi function gives a plain view of the airfield runways
and taxi strips.
This permits the operator to control ground
traffic.
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