Hughes AN6-098P Manuale Utente

 

3. Place the neck of the feed horn into the upper mounting 

bracket, and position the square end of the waveguide 
transition close to the TRIA. See Figure 30.
Make sure the feed horn packing material is out of the way so 
it will not get stuck between the feed horn neck and the upper 
mounting bracket.

4. Attach the square end of the waveguide transition to the 

TRIA using the provided M4 

× 12-mm socket-head cap 

screws and M4 lock washers with teeth on the inner edges. 
(See Figure 30.)
Insert the screws in the direction indicated by the white 
arrows in Figure 30.
Make sure the O-ring remains in the O-ring groove. 

5. Use a long-shaft 3-mm ball driver to tighten the M4 cap 

screws.

6. Place the feed horn clamp over the neck of the feed horn, as 

shown in Figure 31.

7. Insert two ¼-20 × 1-inch hex bolts (with lock washers)—one 

on each side of the clamp.
Make sure the packing material is out of the way so it will not 
get stuck under the clamp.

Figure 30:  Attaching the waveguide transition to the TRIA

White arrows indicate 
location of cap screws and 
direction to insert them.

A fourth 

cap screw 

is not 

visible 

here.

Radio assembly 
(TRIA)

Feed 

  horn