The LNB -- low-noise blocking -- module of a satellite dish antenna is the component that captures satellite broadcast signals and transmits them through to the satellite receiver. Adjusting the angles of the satellite antenna, including the LNB skew or elevation, is an integral part of any satellite dish installation. Customarily, the LNB module skew is set using the built-in elevation measurement ruler on the base of the antenna assembly. The process of setting the LNB skew is fairly straightforward.
Press the "Power" button on your receiver remote control to turn the satellite receiver on.
Press the "Program" button to open the "Program Settings" screen on your television set.
Use the "Up/Down" arrow buttons to scroll through the main menu and select the "Satellite Setup" option. Press the "Enter" button.
Use the "Up/Down" arrow buttons to scroll to the "Satellite Scan" option and then press the "Enter" button. The receiver will run a satellite scan and return the satellite position coordinates in degrees. This information will appear on the television screen. Write down the "Skew" or "Elevation" position.
Loosen the adjustment nut on the elevation measurement ruler. The elevation ruler is located on the satellite dish assembly. Move the dish assembly up and down to set the elevation ruler to match the measurement given by the satellite receiver. Tighten the adjustment nut on the dish assembly.