How to skew lnb

 

Bronze Member
Username: Bowshocker

Post Number: 30
Registered: Sep-07
All sat angle calculators talk about lnb skew. Does this really matter? I have standard lnb and there is no option to skew. Some forum says have to remove some screw in lnb and tilt ?

Skew means use a special type of lnb which can be skewed or any dish plate which comes with option to rotate in any angle ?

Please explain and post photos if you have one
Thanks
 

Gold Member
Username: Donnie1973

Post Number: 1050
Registered: May-06
DN dish has a skew setting. All this does is turn the big round part of ur dish clockwise or counterclockwise. Thats it, no setting to input in the set up... the two sats 110 and 119 wont come in if they are exactly beside each other.
 

Gold Member
Username: Tapeman

New York City in-HD, NY

Post Number: 1543
Registered: Oct-06
What satellite are yo aiming for?

3 movements control satellite targets
- Azmith
- Elevation
- Skew

- Azmith is like moving dish from pole side to side to face exact angle where telestar in space coming from
- Elevation is like moving dish up and down
- Skew is rotating dish plate facing earth curvature (direction of the clock or counter clock)

3 movements in 3 dimensions
Yo don't move LNB yo move dish plate

Similar to your car mirror
- Side to side
- Up and down
- Clockwise or counter-clock-wise
 

Platinum Member
Username: Lklives

Post Number: 12561
Registered: Jan-06
LNBF Polarization Tilt (skew):

Your LNB is marked with a label indicating the polarization tilt. Your local LNB polarity offset information varies by location. If you are in Houston, TX your LNB polarization is to be set at 0 degrees. But if you are on the California coast your LNB polarization could be as much as minus 30 degrees (clockwise rotation). And if you are in Maine your LNB polarization could be as much as plus 30 degree (counter-clockwise rotation). Peaking the dish and adjusting the polarity of the LNB will greatly improve your Signal Quality reading.



When adjusting your LNB, it's not going to be turned more than 31 degrees (unless you live in Hawaii). Also be sure you don't leave that LNB plastic bracket loose. The LNB won't pick up the satellite if the bracket is loose, and it's slightly off. Finally, when thinking about degrees, remember that 30 degrees is about 5 minutes on a clock. Don't turn the LNB too much!

Make certain that the pole or tri-mast assembly is vertically plumb. Check it with an Angle Finder or a level. If the pole or tri-mast is not plumb, your azimuth and elevation will not be accurate and will cause difficulty when pointing the dish. Also, if you are using a pole mount, make certain you pour a sufficient footing that will provide proper ballast. A pole that does not have sufficient ballast will lean over time, causing you to lose the signal. Your mount must be very strong and can not wobble. You must use at least 4 lag screws (correct size for your installation) in the base mount one on each corner.



When pointing the satellite dish, allow 5-10 seconds between any movements of the dish. This allows the receiver to complete a signal scan, and lock indicating that you have located the signal.
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