12
StarBand® Remote Installation Guide
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Changing the Polarity to Horizontal
If you do not receive the feed arm pre-assembled, the feedhorn will be set to vertical
polarity for shipping, because this is how it fits in the box. However, since all current
StarBand assignments on both 121 and 123 are horizontal, it will be necessary to change
the transmit polarity setting from vertical to horizontal.
If your arm was shipped pre-assembled, it will already be set for the correct polarity.
The larger photo above illustrates the polarity, when set to vertical. In the blowup,
you can see the “
V
” for vertical polarity, lined up with the zero.
Changing the polarity is a two-step process:
Step 1
Loosen the 4 Hex or Phillips screws, using the T-handled hex driver or a
Phillips screw driver. The two red arrows in the picture indicate 2 of the 4
screws.
Step 2
Rotate the LNB/feed horn assembly, to set the polarity.
The large arrow on top indicates that the entire feedhorn assembly should be rotated
90
o
... although the arrow shows a counterclockwise rotation, it can be rotated
clockwise instead. The “
H
” marks are on the shoulders, next to the Hex/Phillips
screws.