TM 11-5840-281-12-1
4-5.
SITE AND SHELTER REQUIREMENTS. (CONT)
EQUIPMENT SITING PROCEDURES (CONT)
6.
Select operating site in accordance with requirements for Accessibility (para 4-5) and Equipment
Component Location (para 4-5).
7.
Mark locations for equipment to be installed at operating site.
Siting Using Theodolite or Transit
NOTE
When siting using a theodolite or transit, two personnel are required to perform steps 11 and
12.
1.
Review all applicable regulations, SOPs, and other information that govern equipment siting or otherwise
restricts or imposes limits (distance to runway edges and prohibitions against siting in lateral safety zones).
2.
On scaled map of airfield, measure and lay out equipment siting perimeters determined in Equipment Siting
Limits (para 4-5) for each approach to be covered by gca service. Draw these boundaries to scale of the
map.
3.
On map, shade all areas of equipment siting boundaries that are common (overlapping). Shaded areas are
areas in which radar set group can be located to provide adequate coverage for all approaches being
considered for gca service.
4.
On map, lay out all elements of airfield, such as parking aprons, taxiways, access roads, runway clear
areas, hard stands, storage areas, revetments, drainage culverts, and any navigational aides that may
conflict with location of equipment siting.
5.
On map, determine azimuth and elevation positions of any buildings, structures, hills, or other possible
obstructions to radar coverage.
6.
Select radar site within common shaded areas in step 3 that will provide adequate coverage to all
approaches being considered for gca service.
NOTE
Be sure radar site selected does not conflict with physical location of components of airfield
in steps 4 and 5. If no conflicts exist, proceed with step 7; if a conflict exists, select new
radar site and repeat procedure, beginning with step 6.
7.
Proceed to general area and locate exact position of radar site by measuring distance from known
points, such as clr, or by triangulation with a theodolite (location of a point by means of bearings
taken from two fixed points a known distance apart).
8.
Check that all requirements for Terrain (para 4-5), Accessibility (para 4-5), and Equipment Component
Location (para 4-5) are satisfied.
NOTE
If all requirements are satisfied, proceed to step 9; if not, select new radar site and repeat
procedure, starting with step 6.
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