Andrew ES73 manual Horn Assembly Shown for

Step 4

Step 5 Step 6

Attach 77874 feed supports between rotating tube tabs and corresponding drum tabs as shown in Figure 38. Fully tighten.

•Use 1/2 x 1-1/8 (29 mm) shoulder bolts, lockwashers and nuts

Note: Ensure shoulder bolts are fully seated and feed support angles are installed edge down with flats of angles facing upward.

Fully tighten flange to drum connection hardware.

Attach circular waveguide assembly to 201606 feed horn assembly as shown in Figure

39.Note: Deep recess end of mounting pipe flange should be oriented toward feed horn while shallow recess end should be toward rotating tube assembly.

•Use 1/4 x 1 in (25 mm) bolts and lockwashers

•Insert 10683-469 O-Ring spacer between assemblies as shown

•Insert bolts from circular waveguide to feed horn

Deep

Recess

Note: Typical C-Band Feed
Horn Assembly Shown for	Shallow
Reference Only.	Recess

Figure 39

32 Installation Procedures