Andrew 7.3-Meter ESA Installation, Operation And Maintenance Manual page 33

Step 7
Attach 77646-2 feed horn mounting pipe to 201606/301808 feed horn assembly as
shown in Figure 40.
•
Use 1/2 x 2-1/2 in (63 mm) hex screws, lockwashers and nuts
•
Insert bolts from feed horn to mounting pipe
Figure 40
33
Installation Procedures