DH Satellite 3M 1 PC Ant 48 Polar or Fixed Series - Manual (Page 8)

Set the axis (mount boom) the approximate same degrees as your latitude. See chart. The
dish is tipped forward the amount of declination (from chart). The mount must point south.
Some things should be set and some adjusted. The following should be set and then left
alone, Dish front surface must be flat. Feed should be centered and have the proper focal
length. Declination angle should be set. There are only two adjustments to polar track - 1 is
elevation (latitude) the other is pointing south (very critical and very small movements are
involved).
Have a TV by the dish to set up. You need an inclinometer to set declination and boom angle
and also a compass to find south.
Find a satellite the closest to the south of you. Get a picture, adjust elevation. Try a satellite
east or west and if your arc does not match the polar arc, you must move the apparatus east or
west. If you go west and are under the satellite, do not raise elevation. Move the mount
slightly west, also the same for east.
FINAL ASSEMBLY OF ANTENNA AND MOUNT
A WORD ABOUT KU FREQUENCY
Installing the feed for 12 Gig & Digital is more
critical than on C-Band. This is why DH has a
special feed collar and struts just for the KU
application, (see Fig. 1.) The center of the
feedhorn must be exactly at the focal length (Fig.
5.) Also check to be sure the feedhorn is centered
by measuring from edge of dish. Check to see
that feed is pointed directly at the center of the
dish. The f/l can be adjusted by sliding the
feedhorn closer or farther away from the antenna
through the three-piece collar. Major adjustments
can be made by placing the three-piece collar on
either side of the horseshoe collar.
PO BOX 239 PRAIRIE DU CHIEN WI 53821 USA
[email protected] 1(608) 326-8406
Fig.#1
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