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Satellite Offer #2 How to Point a Satellite Dish What you need to know: A Quick Overview 1) Azimuth refers to the horizontal measurement of a direction. In terms of your satellite dish, it tells you how far left or right your dish should point. 2) Your elevation gives your satellite dish its heading, or how far above the horizon it needs to point (up and down). 3) Polarization also known as "skew", refers to the adjustment needed for the curvature of the Earth. This rotational adjustment compensates for the Earth’s curvature between the dish and the beam of the satellite. Your satellite TV provider can usually provide the information you need. DISH Network for example features a Point Dish/Signal option in their on-screen menu to help you in the alignment of your satellite dish. Using your zip code, you can find the azimuth, elevation and skew. With your azimuth and elevation numbers in hand, get a compass. Standing close to your satellite dish, rotate your compass until the needle points North, or zero degrees. Starting from this point, locate the azimuth number on the compass and turn to face that point without moving the compass itself. East is 90 degrees, South is 180 degrees and West is 270 degrees. If your azimuth number is 240 for example, you would face a direction between South and West on your compass. Now that you’ve found your direction (left/right), estimate the angle of elevation (up/down). With the ground representing zero, calculate the distance going upwards using the elevation number. Straight up would be 90 degrees, so if your elevation number was 45, your elevation would be halfway between the ground and looking straight up into the sky. It is important to note, your dish antenna must be installed correctly before you can attempt to align your dish to the correct satellite to receive satellite TV signals. Some things to keep in mind:
Aligning a satellite antenna (dish) to a broadcast satellite for the
purpose of receiving a signal. For purposes of aligning your dish antenna, we will call height,
elevation and we will call width, azimuth. Azimuth is just a fancy word
for direction. The depth would be the distance from your dish to the
satellite or about 23,748 miles. To receive your satellite TV signal
from the correct satellite you must point your dish to a specific spot
in the sky which will give you the best possible signal strength. This
spot is the location of your satellite in space. The question is, how do
you determine exactly where to point your dish?
![]() Elevation Azimuth - Compass direction the antenna is pointed towards,
relative to a magnetic north. This is also referred to as the left or
right movement (position) of the satellite antenna. The angle of
rotation (horizontal) that a dish antenna must be rotated through to
point to a specific satellite in orbit. The angle is a north to south
line through the antenna’s location, measured in degrees clockwise. Polarization - Correction between where the antenna is
relative to the curvature of the Earth and the satellite’s signal beam.
The satellite signal is either Horizontal or Vertical polarized, but due
to the longitude of the antenna location, the antenna’s feed horn must
be rotated to correctly match the beam's polarization.
![]() Now that you have your azimuth and elevation coordinates, what do you do with them? Set up your dish antenna to ensure an unobstructed line of sight to the satellites. To receive satellite broadcast signals, your dish needs to be positioned correctly. Mount your dish so that the base fits flush with the mounting surface (level if mounted on a flat beam or roof, or on an angle to match the pitch of your roofline). When you have securely mounted your dish, adjust it so the dish mast is plumb, that is, exactly perpendicular to level — this is best achieved using a carpenter's bubble level. With your dish now mounted and properly set, you are ready to aim your dish toward the proper satellites. To set the dish to point up to the satellite, you'll first need to set the elevation. Then you'll point the dish in the proper left-to-right position to set the azimuth. For anyone in the U.S., begin by pointing your dish to the South. If you do not know where South is you can use a general purpose compass to determine North and South. ![]() Setting the Elevation (UP), (DOWN) You can set the proper elevation after the dish is securely mounted. First, loosen the nuts securing the two elevation bolts so that the dish easily moves up and down. Line up the elevation indicator with the tick mark corresponding to your elevation number. Then tighten the bolts. ![]() Setting the Azimuth (LEFT), (RIGHT) Loosen the azimuth nuts on the LNB arm enough that the dish can be turned smoothly with little pressure. Set the azimuth by moving the dish left and right. Point the dish in the general direction of the satellite, in the southern sky. By using a compass you can better pinpoint the direction with your azimuth number to correspond with the degrees on your compass. Acquiring the Signal Now your dish will be in position to lock in on the satellite signal. You'll need to 1) have your satellite receiver connected to your television, with both turned on, and 2) have your antenna to receiver cables connected, and 3) be viewing your Setup Antenna/Signal Strength display from your on-screen menu to measure the signal strength accurately. Ask someone to watch the Signal Strength screen for indications you are receiving the signal. Stand behind the dish, and holding its outer edges, slowly turn it a little to the right to adjust the azimuth. Pause a few seconds, giving the receiver enough time to lock in on the satellite signal. Continue turning the dish in this way until you have acquired the signal or until you have rotated the dish approximately 15 degrees from the starting point. If you haven't detected a signal yet, return to the starting point and move the dish to the left again. If you don't acquire the signal after rotating the dish approximately 15 degrees to either side of the calculated azimuth angle, loosen the elevation bolts and tilt the dish upward so the elevation indicator moves halfway from the current tick mark to the next mark. Then tighten the elevation bolts. Repeat the azimuth adjustments again to lock in on the signal. If the signal still eludes you, check:
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Magnetic declination (or deviation)
The
earth itself is a giant magnet. The earth's magnetic forces form a barrier
around the planet which protects against the sun's "solar wind" among other
things. A compass is an instrument used to indicate general direction because
the compass needle reacts to the magnetic pull from the north in the U.S.
Most people do not realize that their compass does not point to the true
geographic north pole. That's right, a compass points more or less to what is
called magnetic north which is a spot which is always on the move as the earth's
magnetic field changes year by year. (Actually a compass points along the
magnetic force lines for your location rather than to a specific spot) Magnetic
north is, in 2005, about 500 miles from true geographic north (the very top of
the earth).
Declination is the difference, measured in degrees, between
your location's magnetic north compass reading and the true north pole
direction. In other words, declination is the angle between where a compass
needle points and the true north pole. Every location will have a different
adjustment to direction based on the magnetic field at that location.
Declination varies from 0 to 30 degrees in most populated regions of the world.
The 0° declination line passes west of Hudson's Bay, Lake Superior, Lake
Michigan, Indiana, Georgia and most of Florida, and visualizing it relative to
your location helps to make the proper correction.
Information is
available for you to make the required calculations (plus or minus) based on
your location. The angles presented to you in the onscreen pointing menus of
your satellite TV receiver should be programmed so that you do not have to be
concerned about magnetic declination at all. However, if you use a calculation
tool (program) to figure your angles, you may have to adjust for magnetic
declination.
Map of U.S. magnetic declination