Page I-49
Installation and Setup
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If you can’t find the satellite or suspect that your mast assembly is not exactly plumb, try
the following:
With your compass, aim the dish toward the satellite to the best of your ability. Now, put
your spirit level vertically across the dish, as shown in the diagram, and adjust the
antenna on the elevation pivot so that the antenna is vertical. In this position note the
reading on the elevation gauge, this is the base vertical angle (BV) of your installation. If
your antenna mast was perfectly plumb, the gauge would read 22.50. Determine the
difference between your BV angle and the angle of 22.50. This difference represents the
vertical correction factor which is required for your installation. If your BV angle is
greater than 22.50 , add the correction factor to your Vertical Elevation from the Table
(page I-53) to produce your revised elevation angle. If your BV angle is less than 22.50,
subtract the correction factor from your Vertical Elevation from the table to produce your
revised elevation angle. Now, set the antenna’s vertical position to the revised elevation
angle and proceed with panning the dish as outlined in Step 11 of the procedure.
As an example here: if your “BV” angle is measured
to be 20.5 degrees and you live in Calgary where the
satellite’s vertical elevation is 27.6 degrees, the
difference between your BV angle and 22.50 (your
correction factor) is 2.0 degrees. Since your BV angle
is less than 22.5 degrees, subtract 2.0 degrees from
27.6 degrees to obtain your revised Vertical Elevation
of 25.6 degrees.
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