Hughes AN6-098P Manuale Utente

 

Follow the instructions in this section only if the installation 
specification or service order states that vertical transmit 
polarization is required. (The vertical shim kit is not used with 
the cradle-type radio.)

If vertical transmit polarization is not required, go to Installing 
the radio assembly on page 36.

The radio assembly is shipped with a horizontal transmit 
polarization shim installed. If vertical transmit polarization is 
required, you must remove the horizontal shim and replace it with 
a vertical transmit polarization shim. 

Figure 23 shows where the shim is located and shows three of the 
four Allen screws that hold the shim in place. 

To replace the horizontal shim with a vertical shim, follow these 
steps:

1. Obtain a vertical transmit polarization shim kit (Hughes 

model VTX-SHIM-KIT, P/N 1033809-0001).
Figure 24 on page 33 shows what a vertical shim looks like.

2. Loosen and remove the four Allen screws that hold the shim 

in place. See Figure 23.

3. Separate the end of the waveguide from the shim.

Note:

If you need to change from horizontal to vertical transmit 

polarization on an antenna that has the radio assembly already 
installed on the feed support tube, you will have to remove the 
radio assembly from the feed support tube before you can follow 
the instructions in this section.

Figure 23:  Shim location next to TRIA

TRIA

Shim 

 

(See also 
Figure 24.)

Allen screws 

(4 total)

Waveguide