When standing in front of your dish, rotate the Feed/LNB assembly counter-clockwise for a + skew value or rotate the Feed/LNB assembly clockwise for a – skew value. Ignore any +/- on the scale (it may be the wrong way round). Numbers like 0, +45, -45, -90, +90 may also be back to front.
To sets the LNB right for every transponder depending on the satellite and the zones that you are tracking that satellite from, any transponder with horizontal polarity has to be set at 9 o’clock or 3 o’clock and you can adjust it to either 8 o’clock or 4 o’clock.
With regards to the transponder with vertical polarity, you have to set it at either 12 o’clock or 6 o’clock. You can also adjust it to somewhere between 2 o’clock and 10 o’clock depending on the location of the satellite.
How to Adjust an LNB Skew In South Africa
The LNB is the part on a satellite television dish that is installed at the end of the small, straight arm. “LNB” stands for “low noise block-down” converter, and is often referred to as the “eyes” on the dish.
This electronic device receives the digital signal from satellites and begins the process of converting the digital signal into television broadcasting that your TV recognizes. The LNB and dish must be perfectly focused on the satellites and are adjusted by setting the skew, elevation, and azimuth of the dish.
Connect the satellite TV receiver to the television using the RCA style or coaxial cable. Power both devices on, and using the receiver’s remote, navigate to the setup menu. One of the options is entitled “dish alignment” or something similar (actual wording changes by manufacturer).
Select the “dish alignment” option, and then using the number pad on the remote, insert your ZIP code in the appropriate field on the TV screen. The receiver will read back to you the skew, elevation, and azimuth settings for your geographic location. These settings are different for every city in the country.
Go back outside to the satellite dish. The elevation and skew can be preset on the dish before mounting the dish to the home. This will make the process of aligning the dish with the satellite much easier.
On the back of the dish, where the dish mounting bracket connects to the dish’s pole bracket, you will find three bolts. On the back of the dish mounting bracket, you will also see a set of angle measurements that resemble the protractor you used in high school geometry class.
Loosen the three bolts that connect the pivoting parts with either the 7/16- or the 1/2-inch wrench. Rotate the dish and set the pointer on the bracket to the recommended skew angle. Retighten the three bolts to hold the dish in the proper alignment.
When anchoring the dish’s mounting pole, make sure the pole is 100 percent vertical, or perfectly plumb, not tilted in any direction. The mounting pole must be vertically aligned so that the skew is accurate. A tilted mounting pole will affect the dish and LNB skew angle and make it more difficult to finish aligning the dish.
How do you set an LNB position?
Enter your satellite box’s setup menu.
Check transponders 1 and 2.
Loosen the bolts that hold your dish in place.
Move the dish experimentally from side to side and up and down; no more than 1/2 inch at a time.
Secure the bolts to the dish back in place as tightly as possible.