Perform the following steps to select the best site to install the antenna:

1. Go to the location where you plan to install the antenna.

2. Using a compass like that shown at right, hold the compass level so the needle can rotate freely. When the needle stops rotating, it will be pointing to north. Doing so carefully so as not to disturb the needle, rotate the body of the compass so that the 0 or N marks printed on the compass align with the painted end of the needle. The compass is now aligned with magnetic North.

Note: Large metal structures near the compass may reduce its accuracy. If you are near such structures, move several feet away and repeat the measurement to verify the readings.

3. Draw an imaginary line from the center of the compass to the azimuth value you recorded above. This is the direction for pointing the antenna toward the satellite. Use a rock or some other object to mark the location where you are standing; then pick a landmark in the distance that aligns with the magnetic azimuth bearing, or mark the azimuth direction in some way.

4. Using the angle finder and a carpenters level or straight edge, verify that there is an unobstructed line-of-sight toward the satellite as shown in the diagram below. To do this, align the level along the azimuth bearing. Then, using the angle finder, lift the front of the straight edge to the elevation value indicated on the antenna pointing calculations window. Sight along the straight edge to verify that there are no obstructions (such as buildings or trees) blocking the view. Also, avoid installing the antenna next to electrical equipment such as air-conditioning units, because they can cause signal interference.

CAUTION
To avoid possible injury, do not select a site where the antenna could be bumped into or tripped over by people.

Note: When you check for obstructions, avoid sites where future tree growth could block the line-of-sight.

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