10. Perform
coarse elevation
adjustment by loosening the large knob on the elevation
adjustment assembly and sliding the inner and outer cylinders with respect to one another to
lengthen or shorten the elevation arm. Lock the assembly by tightening the knob. Attach the
magnetic inclinometer to the lower box-beam segment of the antenna support arm as shown in
Figure 11. Fine adjustments to elevation will be made by rotating the entire elevation adjustment
assembly clockwise or counter clockwise as required to fine tune the reflector dish in elevation in
step 17 after the radio has been installed.
11. Install the
upper dish
segment. Place the upper dish segment on top of the lower,
engaging the latch pins and alignment bolts/pins to ensure a smooth-appearing parabolic fit.
When the two segments are aligned, and form a smooth parabolic surface, engage the latches
and/or pins.
12. Dismount the
radio arm
from its transit position, on the back of the antenna support
arm. The radio arm is held in its transit location with a single wing nut and washer. Replace the
washer and wing nut for later use. Install the radio arm by inserting the open slotted lower end of
the arm (Figure 5) over the bolt in the end of the antenna support arm. Slide the radio arm over this
receiving bolt at a shallow angle. The radio arm simply slides over this bolt. Note how the hole in
the radio arm will then align with the lower dish dowel stud at the base of the antenna as the radio
arm is raised into place.
13. Remove the
side arms
from their transit storage location on the back of the antenna.
These two arms are simply held in place by friction and have no transit retention hardware. Install
the radio side arms by slightly loosening the wing nuts on each side of the lower dish segment.
Similarly, the radio arm has two wing nuts which will accept the other end of the radio arms. Lift up
the end of the radio arm, which will cause the lower dowel stud in the dish to engage the alignment
hole in the radio arm. Complete the side arm installation by dropping each arm over its respective
wing nut studs. Finger tighten the wing nuts.
14. Install the
radio
(with horn and bracket) by removing the two wing nuts and flat
washers on the radio arm. Lower the radio and bracket over the two captive hex bolts. Secure
with washers and wing nuts. Check the polarization of the radio. Connect the radio to its
power supply and receiving/transmitting electronics.
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