How to Calculate Azimuths for a TV Satellite
Azimuth is the rotation of the satellite dish around a vertical axis, or the side-to-side to angle. Calculating the azimuth for a TV satellite can seem intimidating, but it is actually fairly easy. It is simply a matter of pointing the dish in the right direction to receive a signal of 70 or better. The on-screen menu from your satellite provider will help you get the coordinates for maximum reception--azimuth, skew and elevation. With a little help from a friend calling out picture quality while you adjust your dish, you will properly aim your dish in no time.
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Things You'll Need
- TV satellite dish
- Satellite receiver
- TV
- Compass
- Hand-held level with a magnetic strip
Instructions
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1
Make sure the dish is mounted securely with no potential for movement during windy or stormy conditions. It should be mounted flush with the mounting surface and level vertically and horizontally. Check for stability--no wobbling allowed. Ensure the dish is not obstructed by trees or overhangs.
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2
Loosen the main mount bracket and swing the whole dish all the way around 360 degrees. Use a compass to face the dish due north. This will be the "0" point where you begin.
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3
Turn on the TV and satellite receiver. Choose the on-screen menu option that helps you adjust your satellite dish. Using your ZIP code you can determine the azimuth, skew and elevation. Write this down.
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4
With these coordinates in hand, take your compass and stand at least one foot away from the dish. Rotate your compass until it reads 0 degrees due north. Verify that your dish is pointed due north.
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Locate the azimuth number on the compass and turn to face that direction without moving the compass itself. East is 90 degrees, south is 180 degrees and west is 270 degrees. Now you have your azimuth. Position your dish accordingly.
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Estimate the angle of elevation with the ground being 0 and 90 degrees straight up. If your elevation coordinate is 45 degrees, for example, point the satellite dish halfway between the two. Position the dish accordingly.
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Verify that the picture is optimal. Tighten the bolts to lock the dish in place.
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Tips & Warnings
If possible, have someone positioned inside by the TV screen to call out the signal readings while you are adjusting the dish. For the optimum signal and best picture, you may need to experiment a little to refine the exact position. The other person can let you know when the picture is exactly right and save you numerous trips back and forth.
When adjusting a dish on a roof, be sure the ladder is sturdy and positioned safely. Move carefully when on the roof to minimize the risk of falling.
Keep magnetic compasses away from metal.
