Antenna Pointing
NOTE: The Reflector contains a 19 degree offset look angle. Therefore, when the reflector
aperture is perpendicular to the ground, the antenna is actually looking 19 degrees in elevation.
Elevation of Satellite above horizon = Measured angel from face of reflector plus 19.
1. Determine the elevation angle of the desired satellite, and rotate the elevation bracket to this
angle, and tighten hardware to hold in place.
2. Azimuth Adjustment: With the electronics set to acquire the satellite, rotate the antenna in
azimuth until the satellite is found. Roughly obtain the strongest signal and tighten the hardware on
the Pipe Bracket.
NOTE: If signal is not found on first pass of Azimuth, adjust elevation up or down in 2 deg.
increments until signal is found.
3. Peak the satellite signal by fine
adjustments made in both azimuth
and elevation until the optimum
signal is achieved.
4. Tighten all mount hardware.
13
Elevation
Adjustment
Scale
5. Patriot recommends the use of cross pol nulling using a spectrum analyzer during Tx/Rx
installations. After tightening the azimuth and elevation hardware, peak the co-pol signal using
the spectrum analyzer. Then rotate the feed assembly roughly 90 degrees to obtain a cross pol
null. Fine tune the null. The scale on the feed horn can be used with the tick mark on feed holder
top or the seam between feed holder top and bottom. The tick mark and seam are 90 deg. a part.
Note that changes may be necessary to the resolution and video bandwidth to bring the signal
above the noise floor. Note the angle of optimum cross pol null. Rotate the feed back exactly 90
degrees and tighten the feed clamp.
NOTE: For Rx only, Installation is complete. For Tx/Rx Installation, continue to step 5.