Hughes AN6-098P Manuale Utente

 

Make sure the antenna reflector is set to the initial elevation value 
given by the installation software.

Polarization refers to rotation of the antenna (as shown in 
Figure 47 on page 59) and is measured in degrees from zero (no 
rotation), positive or negative. Polarization is positive east of the 
satellite longitude and negative west of the satellite longitude.

For an antenna with a J-type radio, you adjust polarization on the 
antenna only. For an antenna with a cradle-type radio, you set 
polarization on the antenna to 0° and then set polarization on the 
radio. If you are installing the antenna with a cradle-type radio, 
see Setting polarization for the cradle-type radio on page 47. 
(You will also use the instructions in this section.)

Set the antenna (reflector) polarization as follows:

1. Loosen the four polarization lockdown nuts just enough so 

you can rotate the antenna reflector. See Figure 51.
Do not adjust the center nut on each side, as noted in 
Figure 51.

2. Rotate the antenna to the desired polarization value as 

indicated by the polarization scale (shown in Figure 51).

J-type radio: Set the antenna polarization to the initial 
polarization value given by the installation software.
Cradle-type radio: Set the antenna polarization to 0° ; then 
see Setting polarization for the cradle-type radio on 
page 47. 

Figure 51:  Polarization adjustment on the antenna

Polarization scale

Scale 
pointer

Do not adjust 
center nut (circled) 
or center nut on 
opposite side.

Polarization lockdown nuts 

(also two nuts on opposite 

side of Az/El assembly)