Patriot Antenna 1.8m Offset TxRx Installation & Assembly Instructions Manual page 9

Feed Adjustment (Polarity tuning)
1. Adjust the Feed to the appropriate skew
angle using the provided scale reference.
NOTE: Refer to the chart below for
polarizationangle. Elevation and polarity are
both dependent on site azimuth and the differ-
ence between satellite and site longitude.
Feed Rotation Chart
Install site west
of satellite
CW
CCW
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.0 10.0
Install site East
of satellite
CCW
CW
Polarization Chart
Delta Longitude = |LONG
20.0 30.0 40.0
Site Latitude
Northern Hemisphere
Southern Hemisphere
- LONG |
sat site
50.0 60.0 70.0
CCW
CW
0
Delta
Longitude 5
10
15
20
25
30
35
40
50
60
80.0 90.0
70
80
9